tag:blogger.com,1999:blog-60296520869754521142024-03-13T11:51:39.129-07:00batteries and chargerbattery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.comBlogger128125tag:blogger.com,1999:blog-6029652086975452114.post-43866509849133374942011-05-23T19:33:00.000-07:002011-05-23T19:33:18.608-07:00Take Apart a Laptop Charger<a href="http://www.ibuynow.com.au/battery-brand.php/battery-charger">A laptop charger</a> provides power to the laptop and the battery. Without a correctly functioning charger, the computer will not hold a charge. In some cases it is possible to take the laptop charger apart and make any necessary repairs. Often, the cord on the charger has shorted out and must be fixed. The process of taking apart the charger is straightforward, although the outcome depends on how the charger was built and secured by the manufacturer.<br />
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1.Open the laptop charger by inserting a flath<br />
ead screwdriver into the trim. Some chargers are glued together, so a knife is needed to separate and open the charger. Depending on the manufacturer, however, a charger may have been designed to be impossible to open.<br />
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2.Remove all of the cord that is coiled up inside the <a href="http://www.ibuynow.com.au/battery-brand.php/laptop-ac-adapter">laptop adapter</a>. Use wire cutters to carefully cut and remove the plastic cord without cutting the metal wires inside the cord. Check the entire length of the cord to locate the short, which will be visibly damaged or frayed.<br />
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3.Use the wire cutters to remove the portion of the metal wire that is damaged. Shave both remaining ends of the wire down by half and twist them together to reconnect the wire. Cover the exposed metal with electrical tape to bond and protect the wire.<a href="http://www.ibuynow.com.au/batteries.php/1+36673+hp-compaq+battery">hp compaq nc6000 battery</a><br />
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4.Plug the cord into an electrical outlet to check if the charger is working correctly. Recoil the cord back into the adapter and pop both halves back into place. If the charger was glued together, a small amount of glue can be used to secure both of the halves of the adapter.<br />
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5.Evaluate the laptop charger if it is still not working correctly. Taking a charger to a laptop technician can be expensive, so purchasing a new charger may be the best option.<a href="http://www.ibuynow.com.au/batteries.php/1+81602+hp-compaq+battery">hp compaq 6910p battery</a><br />
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<strong>Tips & Warnings</strong>Computer World recommends replacing a laptop cord that is significantly broken or frayed outside of the adapter because it may become a fire hazard. If there is only a small outer fray that does not directly impact the inner cord, then a layer of silicone sealer can be applied to fix it.<br />
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Always take care when working on electrical equipment to avoid sustaining serious injuries and burns. If a laptop cord is significantly damaged, replace it to avoid a potential fire hazard.<a href="http://www.ibuynow.com.au/batteries.php/1+76217+hp-compaq+battery">hp compaq 6710b battery</a>battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-86531872030278104922011-05-23T19:26:00.000-07:002011-05-23T19:26:42.572-07:00Charge a Laptop Battery Without a ChargerWithout your <a href="http://www.ibuynow.com.au/battery-brand.php/laptop-ac-adapter">AC charger/adapter</a>, you may feel like your laptop is next to worthless. After all, not only do you not have a way to charge the battery in your laptop, you don't even have a way to run your computer via a wall outlet. While new technologies are being developed every day in the area of mobile power solutions and laptop power supplies (including Intel's research into wireless electrical transmissions), there aren't many current alternatives to charging your laptop battery without a charger. If your problem is that you are without your original charger (which is what normally comes with a new laptop), here are some workarounds you can try that will keep your laptop humming. Keep in mind, though, that they cost money and require an advanced purchase, in which case it may be just as economical and convenient to buy <a href="http://www.ibuynow.com.au/battery-brand.php/battery-charger">a new charger</a> from your laptop's manufacturer.<br />
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1.Use a universal power adapter. This is perhaps the most obvious solution to your battery woes. Readily found at most retail outlets that carry electronics, a universal power adapter can range anywhere in price from $30 to $100 (or more, depending on how fancy you get). The adapter comes with multiple tips, one of which will likely fit your laptop's charging port. When plugged in, the adapter will not only power your laptop, but will charge its <a href="http://www.ibuynow.com.au/batteries.php/1+66068+hp+battery">hp pavilion dv8000 battery</a> as well.<br />
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2.Use a universal auto/air adapter. If you're the road-warrior type who spends more time in your car than at a desk, this might be the sensible solution for you. An auto adapter is similar to a regular power adapter, except it has a modified end that plugs into your car's cigarette lighter. The adapter will keep you powered while in your car (or inflight if it's a combination adapter), and will simultaneously charge your laptop so you're ready for those occasions when you do have to leave your car or plane for the real world.<br />
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3.Buy an <a href="http://www.ibuynow.com.au/external-laptop-battery.php">external laptop battery</a> charger. These are standalone devices that do not plug into your laptop. Rather, you take the battery out of your laptop, attach it to the charger, plug the charger into an electrical outlet, and rejuice your battery that way. When fully charged, you reinsert the battery back into your laptop. External chargers are usually brand and model specific, so make sure you get one that matches your laptop's specs. One advantage to an external battery charger is that you can charge spare batteries without tying up your laptop.<br />
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<strong>Tips & Warnings</strong><br />
Consider using an external laptop battery pack for those times you're caught in a pinch. About the size of a DVD case, these "super batteries" plug into your laptop and can provide up to four or more hours of extra power to your laptop. While they won't charge your laptop's original <a href="http://www.ibuynow.com.au/batteries.php/1+119519+hp+battery">hp 484784-001 battery</a>, they do offer an excellent alternative power solution.<br />
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Don't try to charge your battery by plugging power peripherals into your USB port. Those ports are for powering USB devices only, and could be damaged or start a fire if forced to host unregulated voltages.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-313816519633154652011-05-18T19:48:00.000-07:002011-05-18T19:48:45.270-07:00Purchase The Best Rechargeable BatteryThink all <a href="http://www.ibuynow.com.au/">rechargeable batteries</a> are created equal? Wonder why some are so much more expensive than others? There are other factors besides just the name brand to look at. If your digital camera dies only after a few hours of use, it could be due to the rechargeable batteries your using.<br />
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The good news is after reading this e-how you will learn how to get the best rechargeable battery that will have your power hungry devices satisfied and lasting much longer. Look for links at the bottom on some great rechargeable <a href="http://www.ibuynow.com.au/battery-info.php/hp+laptop-battery">hp batteries</a> I purchased recently and a great charger.<br />
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1.The first thing you want to be sure you are getting are the new hybrid Nickel-Metal Hydride (Ni-MH) cells. These are very good for high-drain electronics like digital cameras. A few cool features are they come charged already, so no waiting to charge them after buying. Another great thing is that they hold their charge over many months (unlike regular Ni-MH rechargeables. This is why they are also great for items like remote controls and wireless game controllers as they do not lose their charge as quickly as standard Ni-MH rechargeables.<br />
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2.Ok so now you know that you are looking for hybrid Nickel-Metal Hydride (Ni-MH) cells, the next thing you want to look at is the mAh rating. The mAh stands for milli Amp hour, and indicates <a href="http://www.ibuynow.com.au/batteries.php/1+110304+hp+battery">hp pavilion dv9000 battery</a>'s energy storage capacity the higher the rating the better it can handle constant high-drain devices like digital cameras.. Currently 2900 is the highest you will see for AA batteries, 2850 and 2700 are also really good, here is where you might see a price difference play a factor so be sure that you are comparing the same mAh rating.<br />
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3.So now what you want to compare are how many times you can charge the batteries, and how long might the charge last over time so you know if you need to use them in 6 months you can rely on them. You might not always see this information listed on the package so you might have to do research, however I am going to list a few here for you.<br />
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Hybrio <a href="http://www.ibuynow.com.au/batteries.php/1+45931+hp+battery">hp pavilion dv1000 battery</a> by Uniross - Hybrios should keep 70% of their charge after a year, and can be charged up to 500 times.<br />
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Eneloop Rechargeable Batteries by Sanyo - Eneloop should keep 90% of charged capacity retained after 6 months, and 85% capacity after 12 months at 20 degree Celsius, and can be charged up to 1000 times.<br />
There might be a trade off on the following 3, they are not hybrids, however, they have a very high mAh rating which would mean they would have more power so they last longer for high-drain electronics, so for instance if you were going to take 5 pictures and turn your camera off for a few months, you probably would be ok with the lower mAh rating hybrids, however if you were going to shoot a few hundred pictures over several hours, you would be better with the highest mAh rated <a href="http://www.ibuynow.com.au/batteries.php/1+119421+hp+battery">hp 431132-002 battery</a>.<br />
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POWEREX MH-8AA270-BH 2700mAh AA NiMH Rechargeable Batteries - Ultra high capacity AA batteries offer a super long time run! That's up to 30-40% more than some competitors, and can be charged 1000 times.<br />
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Ansmann AA Ni-MH 2850mAh Rechargeable Batteries - NiMH cell with top capacity. The cell is developed for professional use at highest demands. No statement on how many charges.<br />
Delkin Power AA Ni-MH 2900mAh Rechargeable Batteries -<br />
4.Besides the normal chargers, here are a few that have high ratings, and other cool features.<br />
LaCrosse Technology BC-900 Alpha Battery Charger and Recovery System<br />
Ansmann Deluxe "Energy 16" Charger<br />
Maha PowerEx "Ultimate Professional" Charger<br />
With the above information you are now ready to get the <a href="http://www.ibuynow.com.au/batteries.php/1+129338+hp+battery">best hp pavilion dv7 battery</a> for your money. You and your electronics will be much happier.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-46728057393384368672011-05-09T19:25:00.000-07:002011-05-09T19:25:14.553-07:00How to Fix Your Mac's BatteryApple Macintosh's <a href="http://www.ibuynow.com.au/battery-brand.php/laptop-battery">laptop batteries</a> are known for having issues. The computer might not turn on or awake from sleep, the battery might not charge, the battery might appear to be full but then the computer shuts down, or it might start bulging, which poses a possible safety risk. In this article, you'll learn how to fix your Mac's battery- or what to do if you can't fix it. You should do these steps in order.<br />
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1.The first thing you might try to fix your Mac's battery is to simply put your Mac to sleep and then wake it. If this doesn't work, restart your Mac.<br />
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2.If reawakening and restarting doesn't fix your Mac's <a href="http://www.ibuynow.com.au/batteries.php/1+84482+apple+battery">apple a1175 battery</a>, be sure the AC adapter is unplugged, shut down your Mac, take the battery out and then reinsert the battery. Restart.<br />
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3.If the above two steps do not work you should reset your Mac's SMC. The SMC is the System's Management Controller, and among other things, it controls your laptop's power functions. You should only do this if the above steps do not work.<br />
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*If You Have a Removable Battery<br />
For Macs with a removable battery, be sure your AC adapter is unplugged and shut down your computer. Remove the laptop's battery. Hold the laptop's power button down and count to five. Let go, reinsert the Mac battery, and restart your computer.<br />
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*If Your Mac Laptop Does Not Have a Removable Battery<br />
Macs without a removable <a href="http://www.ibuynow.com.au/batteries.php/1+84549+apple+battery">apple a1185 battery</a> must reset their SMC differently. To do this: Make sure your laptop is shut down. Plug in the AC adapter to both the wall and your computer. Press the following buttons at the same time: Shift + Control + Option + the power button. (This must be done on the original keyboard, not a peripheral one.) Release all of the buttons at the same time. Turn your Mac back on.<br />
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*If You Have a Mac Pro or Intel-based iMac, Mac mini, Xserve<br />
For these specific computers, make sure the computer is shut down. Unplug the power cord, press the power button down and count to five. Release the button, plug the computer back in, and turn your computer back on.<br />
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4.If these options do not work for you and do not fix your Mac's battery, it is time to contact the Apple store. In many cases, even if your laptop's battery is not under warranty anymore, Apple will place your battery anyway as they pose a safety risk, especially if the <a href="http://www.ibuynow.com.au/batteries.php/1+47029+apple+battery">apple powerbook g4 12 battery</a> is bulging. Simply take your computer into the closest Apple store. You can find a list of retail Apple stores at the link below, in the resources section of this article. If there is not an Apple store close to you, contact Apple at 1-800-MY-APPLE.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-5835254154910734912011-05-04T00:42:00.000-07:002011-05-04T00:42:09.820-07:00Discharging at High and Low Temperatures<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">Like humans, <a href="http://www.ibuynow.com.au/battery-info.php/hp+laptop-battery">batteries</a> function best at room temperature, and any deviation towards hot and cold changes the performance and/or longevity. Operating a battery at elevated temperatures momentarily improves performance by lowering the internal resistance and speeding up the chemical metabolism, but such a condition shortens service life if allowed to continue for a long period of time. Some manufacturers of lead acid batteries make use of the improved performance at warmer temperatures and specify the batteries at a toasty 27°C (80°F).</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">Cold temperature increases the internal resistance and diminishes the capacity. Batteries that would provide 100 percent capacity at 27°C (80°F) will typically deliver only 50 percent at –18°C (0°F). The capacity decrease is linear with temperature.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">Li-ion also performs better at high temperatures than at low ones. Heat lowers the internal resistance but this stresses the battery. Warming a dying flashlight or cellular phone battery in your jean pocket might provide additional runtime in the winter. As all drivers in cold countries know, a warm battery cranks the car engine easier than a cold one.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">The dry solid polymer <a href="http://www.ibuynow.com.au/batteries.php/1+128259+hp+battery">hp pavilion dv6 battery</a> uses heat to promote ion flow in what is called a “true plastic battery.” The battery requires a core temperature of 60 to 100°C (140 to 212°F) to become conductive. The dry solid polymer has found a niche market for stationary power applications in warm climates where heat serves as a catalyst rather than a disadvantage. Built-in heating elements keep the battery operational at all times. High battery cost and safety concerns have limited the application of this technology. The more common Li-polymer uses moist electrolyte to enhance conductivity, as discussed earlier. Read more about the <span style="color: black;">Lithium-polymer battery</span>.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">Batteries achieve optimum service life if used at 20°C (68°F) or slightly below, and nickel-based chemistries degrade rapidly when cycled at high ambient temperatures. If, for example, a battery operates at 30°C (86°F) instead of a more moderate room temperature, the cycle life is reduced by 20 percent. At 40°C (104°F), the loss jumps to a whopping 40 percent, and if charged and discharged at 45°C (113°F), the cycle life is only half of what can be expected if used at 20°C (68°F).</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">The performance of all battery chemistries drops drastically at low temperatures. At –20°C (–4°F) most nickel-, lead- and lithium-based batteries stop functioning. Although NiCd can go down to –40°C (-40°F), the permissible discharge is only 0.2C (5-hour rate). Specially built Li- ion brings the operating temperature down to –40°C, but only on discharge and at a reduced discharge. With lead acid we have the danger of the electrolyte freezing, which can crack the enclosure. Lead acid freezes more easily with a low charge when the specific gravity of the electrolyte is more like water.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">Cell matching by using cells of similar capacity plays an important role when discharging at low temperature under heavy load. Since the cells in a <a href="http://www.ibuynow.com.au/batteries.php/1+129338+hp+battery">hp pavilion dv7 battery</a> pack can never be perfectly matched, a negative voltage potential can occur across a weaker cell on a multi-cell pack if the discharge is allowed to continue beyond a safe cut-off point. Known as cell reversal, the weak cell suffers damage to the point of developing a permanent electrical short. The larger the cell-count, the greater the likelihood that a cell might reverse under load. Over-discharge at a heavy load and low temperature is a large contributor to battery failure of cordless power tools, especially nickel-based packs; Li-ion packs come with protection circuits and the failure rate is lower. Read about <span style="color: black;">Cell Mismatch and Balancing</span>.</span><br />
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<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">Users of electric vehicles need to understand that the driving distance specified per charge is given under normal temperature; frigid cold will sharply reduce the available mileage. Using electricity for cabin heating is not the only cause for the shorter driving distance between charging; the <a href="http://www.ibuynow.com.au/batteries.php/1+128394+hp+battery">hp pavilion dv8 battery</a> performance is reduced when cold. </span>battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-24634937349503430352011-04-29T00:29:00.000-07:002011-04-29T00:29:03.877-07:00Industrial ApplicationsIndustrial applications have unique power needs and the choice of battery is important. While consumer products demand high energy density to obtain slim and elegant designs, industry focuses on durability and reliability. Industrial batteries are commonly bulkier than those used in consumer products but achieve a longer service life.<br />
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Batteries are electro-chemical devices that convert higher-level active materials into an alternate state during discharge. The speed of such transaction determines the load characteristics of a battery. Also referred to as concentration polarization, the nickel and <a _mce_href="http://www.ibuynow.com.au/battery-brand.php/laptop-battery" href="http://www.ibuynow.com.au/battery-brand.php/laptop-battery" target="_blank" title="laptop battery">lithium-based batteries</a> are superior to lead-based batteries in reaction speed. This attribute reflects in good load characteristics.<br />
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Discharge loads range from a low and steady current flow of a flashlight to intermittent high current bursts in a power tool, to sharp current pulses on digital communications equipment, laptops and cameras. In this paper we evaluate how the various battery chemistries perform in a given application.<br />
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<strong>What's the best battery for video cameras?</strong><br />
Nickel-cadmium batteries continue to power a large percentage of professional cameras. This battery provided reliable service and performs well at low temperature. nickel-cadmium is one of the most enduring batteries in terms of service life but has only moderate energy density and needs a periodic full discharge.<br />
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The need for longer runtimes is causing a switch to nickel-metal-hydride. This battery offers up to 50% more energy than nickel-cadmium. However, the high current spikes drawn by digital cameras have a negative affect and the nickel-metal-hydride <a href="http://www.ibuynow.com.au/batteries.php/1+93642+replacement-for-dell+battery">dell inspiron 1520 battery</a> suffers from short service life.<br />
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There is a trend towards lithium-ion. Among rechargeables, this chemistry has the highest energy density and is lightweight. A steep price tag and the inability to provide high currents are negatives.<br />
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The 18650 cylindrical lithium-ion cell offers the most economical power source. "18" defines the cell's diameter in millimeters and "650" the length. No other lithium-ion cell, including prismatic or polymer types, offers a similar low cost-per-watt ratio.<br />
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Over the years, several cell versions of 18650 cells with different Ah ratings have emerged, ranging from 1.8Ah to well above 2Ah. The cells with moderate capacities offer better temperature performance, enable higher currents and provide a longer service life than the souped up versions.<br />
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The typical 18650 for industrial use is rated at 2Ah at 3.60 volts. Four cells are connected in series to obtain the roughly 15 volts needed for the cameras. Paralleling the cells increases the current handling by about 2A per cell. Three cells in parallel would provide about 6A of continuous power. Four cells in series and three in parallel is a practical limit for the 18650 system.<br />
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Lithium-ion requires a protection circuit to provide safe operations under all circumstances. Each cell in series is protected against voltage peaks and dips. In addition, the protection circuit limits each cell to a current about 2A. Even if paralleled, the current of a lithium-ion pack is not high enough to drive digital cameras requiring 10 to 15A peak current. Tests conducted at Cadex Electronics have shown that the 18650 allows short current peaks above the 2A/cell limit. This would allow the use of lithium-ion on digital cameras, provided the current bursts are limited to only a few seconds.<br />
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<strong>What's the best battery for still cameras?</strong><br />
The power requirement of a professional digital camera is sporadic in nature. Much battery power is needed to take snapshots, some with a powerful flash. To view the photo, the backlit color display draws additional power. Transmitting a high-resolution image over the air depletes another portion of the energy reserve.<br />
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Most non-professional cameras use a primary lithium <a _mce_href="http://www.ibuynow.com.au/battery-info.php/hp+laptop-battery" href="http://www.ibuynow.com.au/battery-info.php/hp+laptop-battery" target="_blank" title="hp battery">hp battery</a>. This battery type provides the highest energy density but cannot be recharged. This is a major drawback for professional use. Rechargeable batteries are the answer and lithium-ion fits the bill but faces similar challenges to the video cameras.<br />
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<strong>What is the best battery for medical devices?</strong><br />
One of the most energy-hungry portable medical devices is the heart defibrillator. The battery draws in excess of 10 amperes during preparation stages. Several shocks may be needed to get the patient's heart going again. The battery must not hamper the best possible patient care.<br />
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Most defibrillators are powered by nickel-cadmium. nickel-metal-hydride is also being used but there is concern of short service life. In a recent study, however, it was observed that a defibrillator battery cycles far less than expected. Instead of the anticipated 200 cycles after two years of seemingly heavy use, less than 60 cycles had been delivered on the battery examined. 'Smart' battery technology makes such information possible. With fewer cycles needed, the switch to higher energy-dense batteries becomes a practical alternative.<br />
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Sealed lead-acid batteries are often used to power defibrillators intended for standby mode. Although bulky and heavy, the Lead-acid has a low self-discharge and can be kept in prolonged ready mode without the need to recharge. Lead-acid performs well on high current spurts. During the rest periods the <a href="http://www.ibuynow.com.au/batteries.php/1+29538+replacement-for-dell+battery">dell inspiron 9400 battery</a> disperses the depleted acid concentrations back into the electrode plate. Lead-acid would not be suitable for a sustained high load.<br />
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The medical industry is moving towards lithium-ion. The robust and economical 18650 cells make this possible. The short but high current spurts needed for defibrillators are still a challenge. Paralleling the cells and adding current-limiting circuits that allow short spikes of high current will help overcome this hurdle.<br />
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<strong>What is the best battery for power tools?</strong><br />
Power tools require up to 50 amperes of current and operate in an unfriendly environment. The tool must perform at sub zero temperatures and endure in high heat. The batteries must also withstand shock and vibration.<br />
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Most power tools are equipped with nickel-cadmium batteries. nickel-metal-hydride has been tried with limited success. Longevity is a problem but new designs have improved. lithium-ion is too delicate and could not provide the high amperage. Lead-acid is too bulky and lacks persistent power delivery. The power tool has simply no suitable alternatives to the rugged and hard-working nickel-cadmium.<br />
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In an attempt to pack more energy into power tools, the <a _mce_href="http://www.ibuynow.com.au/battery-brand.php/power-tools-battery" href="http://www.ibuynow.com.au/battery-brand.php/power-tools-battery" target="_blank" title="power tool battery">power tool battery</a> voltage is increased. Because of heavy current and application at low temperatures, cell matching is important. Cell matching becomes more critical as the number of cell connected in series increases. A weak cell holds less capacity and is discharged more quickly than the strong ones. This imbalance causes cell reversal on the weak cell if the battery is discharged at high current below 1V/cell. An electrical short occurs in the weak cell if exposed to reverse current and the pack needs to be replaced. The higher the battery voltage, the more likely will a weak cell get damaged.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-21117816215730726122011-04-27T00:27:00.000-07:002011-04-27T00:27:38.906-07:00Battery Fuel GaugeOne of the main tasks of the <a href="http://www.ibuynow.com.au/battery-brand.php/smart-phone-battery">smart battery</a> is to establish communication between the battery and user. A fuel gauge that indicates state-of-charge is part of this effort. When pressing the TEST button on a fully charged SMBus battery, all signal lights illuminate. On a partially discharged battery, half the lights illuminate, and on an empty battery all lights remain dark or a red light appears. Figure 1 shows a fuel gauge of a battery that is 75 percent charged, with three lights glowing.<br />
<table border="0" cellpadding="0" cellspacing="0"><tbody>
<tr><td style="text-align: center; width: 391px;"><div style="margin-left: -7.2pt;"><img alt="State-of-charge readout of a “smart” battery" src="http://batteryuniversity.com/_img/content/guage1.jpg" style="height: 120px; width: 358px;" /></div></td><td style="width: 235px;"><strong>Figure 1: State-of-charge readout of a “smart” battery</strong><br />
Signal lights indicate the battery SoC when pressing the TEST button.<br />
Courtesy of Cadex</td></tr>
</tbody></table><br />
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While the SoC information displayed on <a href="http://www.ibuynow.com.au/battery-info.php/toshiba+laptop-battery">a high quality battery</a> or computer screen is helpful to the user, it does not assure sufficient runtime, because the fuel gauge resets to 100 percent on a full recharge regardless of how much capacity the battery can store. A serious miscount occurs if an aged battery shows 100 percent SoC while the battery’s ability to hold charge has dropped to 50 percent or less. We ask, “100 percent of what?” If, for example, 100 percent of a good battery results in a four-hour runtime, the same indication with a battery holding half the capacity would run for only two hours. The user should know that the fuel gauge only shows SoC and capacity is missing.<br />
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Other than using coulomb counting and measuring internal resistance, there is no reliable method to calculate the state-of-health (SoH) of a battery; current technologies provide only rough estimations. However, there is a way to display the capacity of a smart battery digitally.<br />
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At time of manufacture, the SMBus battery is programmed with a specified capacity, which is 100 percent by default, and the <a href="http://www.ibuynow.com.au/batteries.php/1+128024+toshiba+battery">toshiba satellite a350 battery</a> keeps this information as permanent data. With each full charge, the battery resets to the charge flag; and during discharge the coulomb counter measures the consumed energy. A perfect battery would deliver 100 percent on a calibrated fuel gauge. As the battery ages and the capacity drops, the delivered energy between charges decreases. The discrepancy between the factory-set 100 percent and the delivered coulombs after a full charge can thus determine the battery capacity.<br />
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The SoC and capacity information can be shown on a linear display using colored LEDs. The green lights indicate the usable capacity; the empty part of the battery is marked with dark LEDs; and the unusable part is shown with red LEDs. Figure 2 illustrates a tri-state fuel gauge. Alternatively, the results can be a shown on a digital display.<br />
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<img alt="Tri-state fuel gauge" src="http://batteryuniversity.com/_img/content/guage2.jpg" style="height: 229px; width: 564px;" /><br />
<strong>Figure 2: Tri-state fuel gauge.</strong>The tri-state fuel gauge reads the “learned” battery information on the SMBus and displays it on a multi colored LED bar. The illustration shows a partially discharged <a href="http://www.ibuynow.com.au/batteries.php/1+83182+toshiba+battery">toshiba satellite a200 battery</a> of 50% SoC with 20% empty and 30% unusable.<br />
Courtesy of Cadex<br />
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Installed in an SMBus charger, the tri-state fuel gauge indicates the usable capacity of SMBus compatible batteries and gives the user a clear indication of when to retire a pack. The pass/fail level is user-selectable — at, say, 60, 70 or 80 percent — depending on the minimum required performance level. A failed battery prompts the user to first calibrate the battery. If the charge/discharge/charge cycle did not raise the capacity to the set target level, a red light on the charger indicates a fail. A lit green ready light always assures that the battery has been successfully charged and meets the capacity requirements. (Cadex offered such a charger but the buyers did not appreciate the benefit.)<br />
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Cars with electric propulsion systems use similar fuel-gauge technologies to determine the state-of-charge and state-of-function of the battery. The challenge is in knowing how far a vehicle can travel with a fully charged battery in various ambient conditions. A tailwind on a sunny day is more forgiving than a headwind with snow. The aging of a <a href="http://www.ibuynow.com.au/batteries.php/1+93544+toshiba+battery">toshiba pa3594u-1brs battery</a> adds to the challenge and the fuel gauge will lose accuracy over time. Showing 30 minutes of remaining runtime and then shutting down, as is common with laptops, will not be easily forgiven with the electric vehicle.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-4779484540059832532011-04-25T01:29:00.000-07:002011-04-25T01:29:09.035-07:00Advanced Battery Analyzers<span style="font-family: Arial, Helvetica, sans-serif; font-size: small;"><span style="font-size: x-small;">How are batteries checked and serviced? This article describes the advancements of the <a href="http://www.ibuynow.com.au/">modern battery</a> analyzer and explains how these instruments are used in the industry. While organizations such as public safety have been using battery analyzers for the last two decades to restore and prolong nickel-cadmium batteries, analyzers have made their way also into the cell phone, portable computing, medical and defense markets. The early models were impractical and did not adapt well to changing battery chemistries. In addition, the analyzers provided limited service and did not offer the quick test results and restoration capabilities customers demand today.<br />
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The last few years have brought a rebirth of the battery analyzer. With the move from the high-maintenance nickel-based batteries to the maintenance-free lithium-based packs, the duty of a battery analyzer is changing from life-extending cycling to rapid testing and boosting.</span></span><br />
<h2><span style="font-size: small;">Fixed current analyzers</span></h2>There are two basic types of battery analyzers: the fixed current and programmable versions. Fixed current units are the lower priced of the two, and charge and discharge a <a href="http://www.ibuynow.com.au/batteries.php/1+128024+toshiba+battery">toshiba satellite a350 battery</a> at a preset current of about 600mA. Smaller batteries get serviced reasonably fast but larger batteries are slow. The service time of an 1800mAh battery is three times that of a 600mAh pack. The capacity readout is in mAh and reflects the length of discharge. The fixed-current analyzers are the predecessors of the programmable units.<br />
<h2><span style="font-size: small;">Programmable analyzers</span></h2>The programmable analyzers allow servicing the battery against preset parameters. The charge and discharge currents are adjusted according to the battery rating, and the voltage is set to flag batteries with incorrect voltages. These analyzers provide more accurate readings and enable higher battery throughput than fixed current units. In addition, programmable analyzers are better suited to service new battery systems and have proven to be more effective in restoring weak batteries. The Cadex C7000-Series are such programmable <a href="http://www.ibuynow.com.au/batteries.php/1+83182+toshiba+battery">toshiba satellite a200 battery</a> analyzers.<br />
<h2><span style="font-size: small;">Battery adapters</span></h2>Interfacing the batteries has always been a challenge with battery analyzers. Technicians have invented contraptions with springs and levers so complicated that only they themselves are able to operate. Everybody else stays away from them of fear.<br />
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Cadex solved the battery interface issue with the custom adapters for common batteries and the universal adapters for specialty packs. The custom adapters are the easiest to use and provide the most accurate test results. User-programmable cables accommodate larger batteries or assist when no adapter is on hand. Smaller batteries can be serviced with the Cadex FlexArm™. Two contact probes mounted on flexible arms provide the connection when lowered to the battery terminals. Magnetic guides keep the battery in position and a temperature sensor safeguards the battery.<br />
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<span style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">The Cadex adapters contain a memory chip that configures the analyzer to the correct setting. Each adapter stores 10 battery configuration codes to service 10 different battery types. The parameters can be edited with a few keystrokes on the analyzer's keypad.</span><br />
<h2><span style="font-size: small;">Service programs</span></h2>Advanced battery analyzers are capable of evaluating <a href="http://www.ibuynow.com.au/batteries.php/1+93544+toshiba+battery">toshiba pa3594u-1brs battery</a> conditions and implementing corrective service to restore weak performance. The Cadex system, for example, automatically applies a recondition cycle to nickel-based packs if a user-selected target capacity cannot be reached. Other programs include Prime to prepare a new battery for field use, Charge to allow fast-charge and Custom to apply unique cycles composed of charge, discharge, recondition, trickle charge or any combination, including rest periods and repeats.<br />
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Many modern analyzers also offer battery rapid test programs. This often requires entering the battery voltage and rating (in mAh). To obtain accurate readings, a battery-specific matrix may also be required. The Cadex QuickTest™ stores the matrix in the battery adapter, together with the configuration code. Installing the adapter sets the analyzer to the correct parameters, transparent to the user.<br />
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With the Cadex system, the matrix is commonly included when purchasing the adapter. If missing, scanning several batteries with various state-of-health conditions creates the matrix. The test time is 3 minutes and requires a charge level of 20-90%. If outside this range, the analyzer automatically applies a brief charge or discharge.<br />
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<span style="font-family: Arial, Helvetica, sans-serif; font-size: x-small;">Many batteries are discarded, even when restoration is possible. Cell phone dealers have confirmed that 80-90% of returned mobile phone batteries can be repaired with a battery analyzer. However, most dealers are not equipped to handle the influx of warranty batteries and the packs are returned to the manufacturers for replacement or are discarded. Rapid test enables checking the battery while the customer waits. Minor <a href="http://www.ibuynow.com.au/batteries.php/1+35661+toshiba+battery">toshiba pa3450u-1brs battery</a> problems can be corrected on the spot.<br />
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A typical failure of lithium-ion batteries is excessive low discharge. If discharged below 2.5 volts per cell, the internal safety circuit deactivates and the battery no longer accepts charge with a regular charger. An excessive low discharge can occur if the battery is not recharged for some time after a full discharge through extensive use.<br />
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The Cadex battery analyzers feature Boost, a program, which reactivates batteries that appear dead. Boost works by applying a gentle current to the battery to re-energize the safety circuit and raise the cell voltage. After reaching the operating voltage, the battery can be charged and tested normally. Boosted batteries perform flawlessly as long as a repeat deep discharge is avoided.</span><br />
<h2><span style="font-size: small;">Printing</span></h2>Most analyzers are capable of printing service reports and battery labels. This feature simplifies maintenance, especially in a fleet environment where the operators must observe periodic service requirements. Printed reports also benefit customer service staff and engineers.<br />
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<span style="font-size: x-small;">Labeling the batteries with service date and test results is self-governing in the sense that the user only picks a properly labeled <a href="http://www.ibuynow.com.au/batteries.php/1+136506+toshiba+battery">toshiba pa3819u-1brs battery</a> and has recently been serviced. Batteries with past due service date are segregated for service. With such a system, the user has full confidence that the battery will last through the shift, with energy to spare. Weak batteries are weeded out.</span>battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-23396932618676671222011-04-20T19:53:00.000-07:002011-04-20T19:53:21.875-07:00How Notebook PC to make the battery last longerA laptop that comes with a battery such as <a href="http://www.ibuynow.com.au/batteries.php/1+29538+replacement-for-dell+battery">dell inspiron 9400 battery</a> for driving the body. Unlike batteries and battery, usually accounts for 10 percent of the unit price from 20% in the prices of its major models only. Such batteries can, leave them in the use of desk UPS (uninterruptible power supply) in addition to use as a instead of just a useless treasure, if you buy in bulk and companies to buy in order to hold down costs without battery Sometimes it seems like.<br />
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Would in some things and less about an hour battery life even when used in maple place unique laptop, AC a lot of people move with the adapter, even to get aware of the position of the battery more , especially in portable applications with battery briefly very important.<br />
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As mentioned previously, one million laptop batteries in the very expensive things cheap, with prices as there are things they can buy low-cost desktop PC with a high-capacity battery. Tens of minutes driving time of short, long or 10 hours of combined battery capacity, on average is about 2 hours. Better battery life in the catalog, "one to three hours," but things are written so that if you use these three hours is not a good two hours, I normally just over an hour Using Mashou.<br />
Batteries used in notebook computers can be classified into several types such as in alkaline batteries and manganese.<br />
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As the laptop battery such as <a href="http://www.ibuynow.com.au/batteries.php/1+93642+replacement-for-dell+battery">dell inspiron 1520 battery</a> for almost obsolete for years, not only the secondary battery from the old laptop (used to recharge the battery) has been used as a long time. There was observed in memory when the charge is not fully discharged state.<br />
Such as secondary batteries are commonly used. Low-cost laptops are often used to lower costs. A memory effect.<br />
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Batteries used in portable devices ranging from mobile laptops. For users with no memory effect, so light can be used conveniently. Special attention should be made so that material could ignite and rough handling. In general use I have not even worry too much. Recently, polymer electrolyte (polymer), light shape even more freedom to use, "Richiumuporimabatteri" has been adopted because some models appeared.<br />
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Rechargeable battery has a life expectancy is generally less time or it can be used hundreds of times used, this is the same for your laptop battery. The notebook computer battery is removable and may trouble releasing. If the portable notebook, and Unplug the internal battery in the battery itself can easily replace it yourself is difficult when it becomes available because the battery is bad, it becomes treated as fixed. In this case, it takes both time and cost considerably. It is useful to think of the future and inexpensive for you to choose models with built-in <a href="http://www.ibuynow.com.au/batteries.php/1+999+replacement-for-dell+battery">dell latitude d600 battery</a> for easy removal if anything, can be difficult to obtain a replacement battery after a few years after the release of the model, such as when a minor model There is also careful with the neighborhood.<br />
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In order to preserve the battery, if the batteries have memory effect, better to charge the end-use, if you care even overcharge and over discharge, like a trick and this seems to be small. If you have more than one batteryn for example <a href="http://www.ibuynow.com.au/battery-info.php/replacement-for-dell+laptop-battery">dell battery</a> is no problem as I use every other week, AC tie would leave even less power is unquestionable. Battery is degraded in anyway even with hundreds of care may be better not too nervous.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-31836283136373907092011-04-17T19:13:00.000-07:002011-04-17T19:13:50.552-07:00Renewable Energy News – Printed Battery Technology Unveileda technology similar to printing solar cells, Xerox’s Palo Alto Research Center (PARC) has developed a process to “print” batteries with the potential for far more energy storage capacity than lithium ion batteries. Metal air batteries, such as the acer <a href="http://www.ibuynow.com.au/batteries.php/1+94429+acer+battery">extensa 5220 battery</a>, have the potential to to provide more energy capacity than lithium ion batteries, however this is dependent on the development of air cathodes that support the power density in order for it to be viable in applications where economy, space and weight are major issues – such as electric vehicles.<br />
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PARC says it has developed a process using co-extrusion printing to deposit thick films of functional <a href="http://www.ibuynow.com.au/batteries.php/1+128004+acer+battery">acer aspire 5920 battery</a> materials onto substrates, which provides up to10 times the air-breathing surface area of conventional electrodes. The pastes of functional materials can contain water-repelling materials such as Teflon interleaved with hydrophilic (“water-loving”) electro-catalyst material.<br />
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The deposition can be as narrow as several microns wide and as high as several hundred microns.<br />
PARC is interested in further developing the technology with commercialisation partners in the <a href="http://www.ibuynow.com.au/batteries.php/1+129475+acer+battery">acer aspire 5536 battery</a> and fuel cell industries or in the materials or equipment markets that service the sector.<br />
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PARC has a long history of technology innovation and research, spanning back over 40 years. The company is also behind the second generation of solar concentrators such as those used in the solar farm at Alice Springs airport, which was the first solar electricity generation facility of its kind in the southern hemisphere.<br />
PARC also invented “electronic reusable paper” in 2000, a thin, flexible material that can display graphics and text when an electric charge is applied to it.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-64108628394437467942011-04-10T23:50:00.000-07:002011-04-10T23:50:20.489-07:00New Lead Acid SystemsLead acid batteries continue to hold a leading position, especially in wheeled mobility and stationary applications. This strong market appeal entices manufacturers to explore ways to make the <a href="http://www.ibuynow.com.au/">batteries</a> better. Improvements have been made and some claims are so promising that one questions the trustworthiness. It is no secret that researchers prefer publishing the positive attributes while keeping the negatives under wraps. The following information on lead acid developments was obtained from available printed resources at the time of writing.<br />
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Firefly Energy<br />
The composite plate material of the Firefly Energy battery is based on a lead acid variant that is lighter, longer living and has higher active material utilization than current lead acid systems. The battery includes foam electrodes for the negative plates, which gives it a performance that is comparable to NiMH but at lower manufacturing costs. Design concerns include microtubule blockage through crystal growth during low charge conditions. In addition, crystal expansion causes a reduction of the surface area, which will result in lower capacity with aging. Pricing is also a concern. It currently costs about $450 to manufacture a Firefly battery as opposed to $150 for a regular lead acid version. Firefly Energy is a spin-off of Caterpillar and went into bankruptcy in 2010.<br />
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Altraverda Bipolar<br />
Similar to the Firefly <a href="http://www.ibuynow.com.au/battery-brand.php/laptop-battery">Energy battery</a>, the Altraverda battery is based on lead. It uses a proprietary titanium sub-oxide ceramic structure, called Ebonex®, for the grid and an AGM separator. The un-pasted plate contains Ebonex® particles in a polymer matrix that holds a thin lead alloy foil on the external surfaces. With 50–60Wh/kg, the specific energy is about one-third larger than regular lead acid and is comparable with NiCd. Based in the UK, Altraverda works with East Penn in the USA, and the battery is well suited for higher voltage applications.<br />
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Axion Powe<br />
The Axion Power e3 Supercell is a hybrid battery/ultracapacitor in which the positive electrode consists of standard lead dioxide and the negative electrode is activated carbon, while maintaining an assembly process that is similar to lead acid. The Axion Power battery offers faster recharge times and longer cycle life on repeated deep discharges than what is possible with regular lead acid systems. This opens the door for the start-stop application in micro-hybrid cars. The lead-carbon combination of the Axion Power battery lowers the lead content on the negative plate, which results in a weight reduction of 30 percent compared to a regular lead acid. This, however, also lowers the specific energy to 15–25Wh/kg instead of 30–50Wh/kg, which a regular lead acid battery normally provides.<br />
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CSIRO Ultrabattery<br />
The CSIRO <a href="http://www.ibuynow.com.au/battery-info.php/replacement-for-dell+laptop-battery">Ultrabattery</a> combines an asymmetric ultracapacitor and a lead acid battery in each cell. The capacitor enhances the power and lifetime of the battery by acting as a buffer during charging and discharging, prolonging the lifetime by a factor of four over customary lead acid systems and producing 50 percent more power. The manufacturer also claims that the battery is 70 percent cheaper to produce than current hybrid electric vehicle (HEV) batteries. CSIRO batteries are undergoing road trials in a Honda Insight HEV and show good results. Furukawa Battery in Japan licensed the technology. The CSIRO battery is also being tested for start-stop applications in micro-hybrid cars to replace the lead acid starter battery. This battery promises extended life when exposed to frequent start-stop conditions and is able to take a fast charge.<br />
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EEStor<br />
This is the mystery battery/ultracapacitor combination that receives much media attention. The battery is based on a modified barium titanate ceramic powder and claims a specific energy of up to 280Wh/kg, higher than lithium-ion. The company is very secretive about their invention and releases only limited information. Some of their astonishing claims are: One-tenth of the weight of a <a href="http://www.ibuynow.com.au/battery-info.php/toshiba+laptop-battery">NiMH battery</a> in a hybrid application, no deep-cycle wear-down, three- to six-minute charge time, no hazardous material, similar manufacturing costs to lead acid, and a self-discharge that is only 0.02 percent per month, a fraction of that of lead acid and Li-ion.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-38812824486538780072011-04-07T20:29:00.000-07:002011-04-07T20:29:40.091-07:00Laptop and Battery by Shane Sparks<div style="text-align: justify;">Professors trade stories about seizing the cell phones of students who text during class or whose tones sound during a lecture.</div><div style="text-align: justify;"><br />
</div><div style="text-align: justify;">Frank J. Rybicki, assistant professor of mass media at Valdosta State University, did the equivalent last week when he shut the laptop of a student who was allegedly web surfing as opposed to taking notes. She filed a complaint (reportedly about a finger or fingers that were hurt when he shut the laptop) and the university’s police arrested him on a charge of <a href="http://www.ibuynow.com.au/battery-brand.php/laptop-battery">battery</a>. The Georgia institution suspended his teaching duties there, although not his pay.</div><div style="text-align: justify;"><br />
</div><div style="text-align: justify;">Reached on the phone, Rybicki confirmed his arrest and suspension, and said that he had been told by the university not to answer questions about the incident. He did say that the article and comments in the student newspaper, The Spectator, were accurate. That article quoted students who saw the incident as saying that Rybicki closed the laptop amid an argument with the student over his view that she had been on websites not related to the course.</div><div style="text-align: justify;"><br />
</div><div style="text-align: justify;">The article also quoted students of Rybicki as saying that they were concerned that an outstanding professor had been arrested and might have his career disrupted. (Rybicki does not have tenure.)</div><div style="text-align: justify;">Comments on the site said that the student had been warned to stop surfing the web and had ignored the professor. Generally, the comments were supportive of the professor and critical of the student. “Arrested for <a href="http://www.ibuynow.com.au/battery-info.php/replacement-for-dell+laptop-battery">dell battery</a>. For closing a laptop? Did it break the students fingers or something? I was thinking he hit a student with a computer. Simply closing it may be a little trivial to ruin a man’s entire life over don’t ya think?” said one comment.</div><div style="text-align: justify;"><br />
</div><div style="text-align: justify;">The comments from those saying that they were in class suggested doubt about the extent of the injuries to the student’s fingers and surprise that the incident had led to an arrest. Another comment said: “If this teacher shut the laptop so hard that her arms were somehow mangled, fine … but seriously, she had PLENTY … PLENTY of other options. A. Don’t be so rude in a classroom. B. If you are going to play on your laptop … either don’t take the laptop(<a href="http://www.ibuynow.com.au/battery-info.php/toshiba+laptop-battery">laptop battery</a>) to class, or don’t take yourself to class. C. Do what the teacher says for half a second; he/she probably knows more than you do so grow up and take some responsibilities; College isn’t another episode of High School where you can get away with being a distraction; some people here WANT to learn, if you don’t care, … then get out! Or at least be somewhat polite.”</div><div style="text-align: justify;"><br />
</div><div style="text-align: justify;">While he declined to discuss the incident specifically, Rybicki did answer a few questions. Asked if students shouldn’t look at non-class websites while in class, he said that was “pretty obvious.” Asked if he had ever caused physical harm to any student, he said “absolutely not, never.” </div><div style="text-align: justify;"><br />
</div><div style="text-align: justify;">Several students who were in the class said that they were told by the university not to discuss the incident. The head of the Faculty Senate referred all questions to the university’s spokeswoman, Thressea H. Boyd. Via e-mail, Boyd said, “The university is investigating an incident involving a faculty member and this matter will be processed through the appropriate legal channels. In terms of class instruction, modifications have been made. All employees are expected to perform their obligations and responsibilities in a professional manner.”</div><div style="text-align: justify;"><br />
</div><div style="text-align: justify;">As to university policy on laptop use in class, she said that “the use of computers during classroom instruction is within the discretion of each professor at the university.”</div><div style="text-align: justify;"><br />
</div><div style="text-align: justify;">Samuel Logan, a Valdosta State student who was not in the course, but who has taken other classes with Rybicki, said via e-mail that he admired Rybicki. “He cares about his students and our grades, always making sure we do our best.” As for what reportedly happened in class, Logan said that an arrest “was not justified because he is a great teacher and she was on Facebook, when we know not to be on other sites while the teacher is teaching.”</div>battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-26600595171280340912011-03-31T18:21:00.000-07:002011-03-31T18:21:49.747-07:00Toshiba laptop battery recallToshiba said this morning it is calling back and will be replacing about 340,000 laptop computer batteries worldwide, the third recall of faulty batteries made by Sony in less than six weeks.<br />
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The <a href="http://www.ibuynow.com.au/battery-info.php/toshiba+laptop-battery">toshiba battery</a>, used in Dynabook and Dynabook Satellite laptops manufactured between March and May this year, could fail on the road because of problems with storing and transmitting power, Toshiba said.<br />
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Spokesman Keisuke Ohmori declined to estimate the cost of the move, saying it would not affect earnings, and would not say whether Toshiba was asking Sony to foot the bill.<br />
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Toshiba said that the faulty batteries would not cause fires. Although the batteries would die ‘only in rare cases’, that could happen regardless of how carefully they are used, Ohmori said.<br />
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Last month Dell and Apple Computer recalled almost 6m Sony-made batteries, saying they could produce smoke and catch fire.<br />
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Fujitsu and Hewlett Packard, which also use Sony batteries in their laptops, said no battery problems have been reported in quality control checks.<br />
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The battery have a good compatibility with many original <a href="http://www.ibuynow.com.au/battery-brand.php/laptop-battery">laptop batteries</a> for many laptops, even diffenent brands.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-7648184821300644032011-03-27T23:25:00.000-07:002011-03-27T23:25:42.123-07:00Choosing The Correct Laptop Adapter For Your LaptopChoosing the correct <a href="http://www.ibuynow.com.au/battery-brand.php/laptop-ac-adapter">laptop adapter</a> is all a matter of voltage, output power, and proper connection. If all of these things do not match the original specifications of your computer, than a new laptop adapter will likely not work on your machine and may potentially cause a lot of damage. In the end, most replacement adapters will have a list of computers they are compatible with.<br />
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The first thing to consider for the laptop adapter is the voltage. The easiest way to check this is to turn the computer over and see if there is a voltage listed anywhere on the bottom of the machine. A sticker may be affixed with this information and other similar laptop specs listed. It should be a number with a V attached to it, such as 19.5V. This information is also available on the original adapter, if it is available.<br />
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The second thing to look for is the current output needed for the <a href="http://www.ibuynow.com.au/battery-info.php/toshiba+laptop-battery">toshiba laptop adapter</a>. This number will have an A of mA associated with it. For example, it may say something like 4.7A or 950mA. These numbers ensure that the power going to your machine will be acceptable and keep it operating within normal parameters. Not paying attention to either of these numbers could cause the electrical systems in the computer to malfunction and quit working altogether. <br />
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Once these two issues have been settled, the other important step is simply to make sure the connection fits the port in your computer where it is to be plugged in. The voltage and output current of the laptop adapter will not matter if it is not able to be connected. If ordering online or if you do not have your computer, it is advisable to check this out as soon as possible. <br />
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Many may choose the safest route possible and go with a replacement laptop adapter directly from the manufacturer, if available. While this is a good option, these parts may be more expensive than others that may be available from after-market manufacturers. Further, as long as the numbers match, all should work nearly the same and be just as safe and effective. <br />
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Another thing to consider is whether you want an <a href="http://www.ibuynow.com.au/adapter-info.php/replacement-for-dell+laptop-ac-adapter">dell AC laptop adapter</a> or DC adapter. An AC adapter is made to be plugged into any standard electrical outlet such as those in a home or office. The DC adapter is made for automobile use.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-4618780608654780472011-03-24T20:11:00.000-07:002011-03-24T20:11:52.796-07:00How to Make Your Cell Phone Battery Last Much LongerHere are some ways that you can make your <a href="http://www.ibuynow.com.au/battery-brand.php/mobile-phone-battery">cell phone battery</a> last quite a long time.<br />
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1.Keep your phone cool. A cool phone is a happy phone. Hot phones such as those left in cars or in your pocket use more energy because any electrical circuit is less efficient when hot.<br />
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Keep you phone in a cool spot and carry it on a clip outside your pocket if possible and don't leave it in a hot car. Cell phone battery technology has come a long way. Newer phones feature thin batteries that do a remarkable job of storing enough energy for you talk up to a couple of hours.<br />
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2.Keep your phone on charge for a long duration. Quick, partial charges create a memory effect in <a href="http://www.ibuynow.com.au/battery-info.php/nokia+mobile-phone-battery">your phone battery</a> and it will cease to charge fully if all you ever do is partially charge it.<br />
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3.Use an external antenna or booster. Most phones vary their transmit power according to the strength of the signal. Try to move near a window to get a better signal and this will help your phone battery life. Use an external antenna while in the car if your phone has a jack for one. If not, consider a wireless repeater type cell phone booster for your home or car. Since these boost the signal coming into and out of your phone you will use less battery power.<br />
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You can buy <a href="http://www.ibuynow.com.au/external-battery.php">external batteries</a>, such as from Energizer that you can plug into your phone and gain some extra talk time in a pinch.<br />
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Finally, if you have had your phone for a year or more consider getting a new battery from the phone store. Always return used phone batteries to a recycling center or to your local cell phone store.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-86936956033925208272011-03-22T20:32:00.000-07:002011-03-22T20:32:04.074-07:00How Do I Check the Charge on My HP Laptop Battery?<div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;"><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;">All Hewlett Packard laptops that were built in 2006 or later are equipped with <a href="http://www.ibuynow.com.au/">Battery</a> Check. This application is a component of HP Support Assistant, and its purpose is to keep laptop users informed about the status of their batteries. Using Battery Check takes the guesswork out of troubleshooting batteries. While this feature is helpful, you can still manually check the amount of charge that is left on your HP laptop, even if it is an older laptop.</div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;"> </div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;">Newer HP Laptops Supported by <a href="http://www.ibuynow.com.au/battery-info.php/hp+laptop-battery">HP Battery</a> Check</div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;"><br />
1.Plug your laptop into an outlet. In order for the Battery Check application to run properly, your laptop must be connected to the AC adapter.</div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;"> </div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;">2.Click on the "Start" menu button, which is located in the lower left-hand corner of the screen. Select "All Programs" from the pop-up "Start" menu.</div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;"> </div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;">3.Click on "Hewlett-Packard, HP Battery Check."</div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;"> </div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;">4.Determine the <a href="http://www.ibuynow.com.au/batteries.php/1+121201+hp+battery">hp pavilion dv6400 battery</a> status by looking at the "Battery Check" application. This application tells you the remaining charge, total battery power remaining, battery health and storage capacity of the battery.</div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;"> </div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;">Older HP Laptops that Don't Support Battery Check</div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;"><br />
1.Unplug your laptop from the wall.</div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;"> </div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;">2.Use the touch pad or mouse to hover the cursor over the battery icon that appears in the lower right-hand corner of the screen.</div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;"> </div><div style="background-color: transparent; border-bottom: medium none; border-left: medium none; border-right: medium none; border-top: medium none; color: black; overflow: hidden; text-align: left; text-decoration: none;">3.Wait until the amount of charge is displayed in a small pop-up window on top of the cursor. You will see the percentage of charge that is left, as well as the time left until the laptop powers down due to a low <a href="http://www.ibuynow.com.au/batteries.php/1+56703+hp-compaq+battery">hp compaq 381374-001 battery</a>.<br />
</div><a href="http://www.ehow.com/how_6666344_do-charge-hp-laptop-battery_.html#ixzz1HODI4VhL" style="color: #003399;"></a></div>battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-79523435860345759522011-03-21T00:50:00.000-07:002011-03-21T00:50:01.728-07:00Tips For Buy a Battery for a Compaq LaptopThere are several reasons to purchase <a _mce_href="http://www.ibuynow.com.au/battery-info.php/hp+laptop-battery" href="http://www.ibuynow.com.au/battery-info.php/hp+laptop-battery" target="_self" title="a new battery">a new battery</a> for your Compaq (which is now part of Hewlett Packard) laptop. Having a backup battery is an excellent idea, especially if you are often on the road. Many users also find that their current battery doesn't have a long enough battery life, and need one that can hold a charge for longer. Finally, batteries can lose their ability to hold a charge, rendering them near useless. Regardless of the reason, buying a new Compaq laptop battery should be an easy process.<br />
1.Determine the reason for buying a new battery. If you simply need a new battery to replace your old one, then any battery will do, but if you are looking for a <a href="http://www.ibuynow.com.au/batteries.php/1+121201+hp+battery">hp pavilion dv6400 battery</a> with a longer life, look at six- and nine-cell batteries.<br />
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2.Determine if you are willing to buy a third-party battery for your Compaq laptop. While third-party batteries may be much more affordable, if you are buying from a non-reputable company it may still be a waste of money. Buying straight from your computer's manufacturer will typically cost more, but with the added assurance of a battery that is specifically for your laptop.<br />
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3.Examine the warranty offered for the <a _mce_href="http://www.ibuynow.com.au/batteries.php/1+56703+hp-compaq+battery" href="http://www.ibuynow.com.au/batteries.php/1+56703+hp-compaq+battery" target="_blank" title="HP compaq 381374-001 battery">HP compaq 381374-001 battery</a>. Many warranties last as little as 30 to 90 days, which doesn't provide much protection. Also, a bad battery can damage your laptop, so check that the warranty includes stipulations about the effects of the battery on your Compaq laptop.<br />
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4.Consider the weight of the battery. While the average laptop user isn't concerned about an extra pound or two, weight might be a real issue. Ni-MH batteries typically weigh more than Li-Ion and Li-Poly batteries. When considering different battery types, you must ensure that they are compatible with your model of laptop.<br />
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5.Take proper care of your new battery by discharging the battery all of the way at least twice per month. This practice, known as conditioning, will help preserve the life of your battery as well as lengthen the time a charge will last.<br />
Tips & Warnings<br />
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Recalls on laptop batteries are fairly common. Before purchasing a new battery, contact Compaq to check the status of your current battery. If it falls under a recall, you may not need to spend extra money to get a new battery. Check the resources below to check the recall status of your <a _mce_href="http://www.ibuynow.com.au/batteries.php/1+121523+hp-compaq+battery" href="http://www.ibuynow.com.au/batteries.php/1+121523+hp-compaq+battery" target="_blank" title="HP compaq Pavilion dv3500 Series battery">HP compaq Pavilion dv3500 Series battery</a>.<br />
When discarding an old laptop battery, it is important to dispose of it properly. Many office supply stores offer recycling services for laptop batteries and toner cartridges, and often the batteries can just be dropped off at any cashier.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-20999104844090486972011-03-16T23:22:00.000-07:002011-03-16T23:22:52.777-07:00Can batteries be restored?Battery users and entrepreneurs often ask, “Can batteries be restored?” The answer is, “It depends.” Most battery failures are permanent and cannot be repaired, but there are exceptions. Sulfation on lead acid batteries can be removed if caught in time; crystalline formation, also known as “memory,” on nickel-cadmium can be dissolved through deep-cycling. Read more about <span style="color: black;">Memory: Myth or Fact?,</span> and “sleeping” lithium-ion packs can be boosted if they have been over-discharged. Read more about <span style="color: black;">Safety circuits for <a href="http://www.ibuynow.com.au/">modern batteries</a></span>.<br />
Permanent battery defects include high internal resistance, elevated self-discharge, electrical short and capacity fade. Poorly designed chargers, exposure to excess heat, harsh charge and discharge cycles, and inappropriate storage contribute to early aging. Let’s examine the cause of these non-correctable battery problems and explore what we can do to minimize them.<br />
<h2>Low-capacity Cells</h2>A manufacturer cannot predict the exact capacity when a battery comes off the production line, and this is especially true with lead acid batteries that involve manual assembly. Fully automated cell production in “clean rooms” also causes performance differences, and as part of quality control, each cell is measured and segregated into categories according to their inherent capacity levels. The high-capacity A-cells are reserved for special applications and sold at premium prices; the large mid-range B-group goes to commercial and industrial markets; and the low-grade C-cells may end up as consumer products in department stores. Cycling will not significantly improve the capacity of the low-end cell, and even though the cell may look good, the buyer must be aware of differences in capacity and quality, which often translate into life expectancy.<br />
<h2><a href="" name="mismatch"></a>Cell Mismatch, Balancing</h2>Matching of cells according to capacity is important, especially for industrial batteries. No perfect match is possible, and if slightly off, nickel-based cells adapt to each other after a few charge/discharge cycles similar to the players on a winning sports team. High-quality cells continue to perform longer than the lower-quality counterpart, and the cells degrade at a more even and controlled rate. Lower-grade cells, on the other hand, diverge more quickly with use and time, and failures due to cell mismatch are more widespread. Cell mismatch is a common cause of failure in industrial batteries. Manufacturers of professional power tools and medical equipment are careful in the choice of cells to attain <a href="http://www.ibuynow.com.au/battery-info.php/replacement-for-dell+laptop-battery">good battery</a> reliability and long life.<br />
Let’s look at what a weak cell does in a pack that is strung together with strong ones. The weak cell holds less capacity and is discharged more quickly than the strong brothers. Going empty first, the strong brothers overrun this feeble sibling and the resulting current on a continued discharge pushes the weak cell into reverse polarity. Nickel-cadmium can tolerate a reverse voltage of minus 0.2V and a reverse current of a few milliamps, but exceeding this level will cause a permanent electrical short. On charge, the weak cell reaches full charge first and it goes into heat-generating over-charge while the strong brothers still accept charge and stay cool. The low cell experiences a disadvantage on both charge and discharge. It continues to weaken until finally giving up the struggle.<br />
The capacity tolerance between cells in an industrial battery should be +/– 2.5 percent. High-voltage packs designed for heavy loads and wide adverse temperature ranges should have lower tolerances. There is a strong correlation between cell balance and longevity.<br />
Li-ion cells share similar deficiencies with nickel-based systems and need management. The mandatory protection circuit supervises the serially connected cells by clamping the voltage when exceeding 4.25 and 4.35V on charge, and disconnecting the pack from discharge when the weakest cell drops to between 2.50 and 2.80V/cell. This prevents the stronger cells from pushing the depleted cell into reverse polarization. The protection circuit acts like a guardian angel that shields the weaker siblings from being bullied by the stronger brothers. This may be help to explain why Li-ion packs for power tools last longer than <a href="http://www.ibuynow.com.au/battery-info.php/toshiba+laptop-battery">nickel-based batteries</a>, which normally do not have a protection circuit.<br />
The capacity of quality Li-ion cells is consistent and the self-discharge is low. A problem arises when the cells exhibit a discrepancy in self-discharge. This can be attributed to lower-quality cells or high-temperature spots in a large automotive battery, which hastens aging. Balancing is required and there are two methods: <em>Passive balancing</em> bleeds the high-voltage cells; <em>active balancing</em> shuttles the extra charge from higher-voltage cells to the lower-voltage cells without burning the energy. Active balancing is the preferred method on EVs.<br />
With use and time all batteries become mismatched, and this also applies to lead acid. Shorted cells and those having high self-discharge are a common cause of cell imbalance and lead to subsequent failure. Manufacturers of golf cars, aerial work platforms, floor scrubbers and other battery-powered vehicles recommend an equalizing charge of 3–4 hours if the voltage difference between the cells is greater than +/– 0.10V, or if the specific gravity varies more than 10 points (0.010 on the SG scale). An equalizing charge is a charge on top of a charge that brings all cells to full-charge saturation. This service must be administered with care because excessive charging can harm the <a href="http://www.ibuynow.com.au/batteries.php/1+121147+acer+battery">acer travelmate 6592 battery</a>. A difference in specific gravity of 40 points poses a performance problem and the cell is considered defective. A 40-point difference is one cell having an SG of 1.200 and another 1.240. A charge may temporarily cover the deficiency, but the flaw will resurface after a few hours of rest due to high self-discharge.<br />
<h2>Shorted Cells</h2>Manufacturers are at a loss to explain why some cells develop high electrical leakage or a short while still new. The culprit might be foreign particles that contaminate the cells during manufacture, or rough spots on the plates that damage the delicate separator. Clean rooms, improved quality control at the raw material level, and minimal human handling during the manufacturing process have reduced the “infant mortality rate.”<br />
Applying momentary high-current bursts to repair a shorted NiCd or NiMH cell has been tried but offers limited success. The short may temporarily evaporate but the damage in the separator remains. After service, the repaired cell may charge normally and reach correct voltages; however, high self-discharge will likely drain the battery and the short will return.<br />
It is not advised to replace a shorted cell in an aging pack because of cell matching. The new cell will always be stronger than the others. Consider the biblical verses: “No one sews a patch of unshrunk cloth on an old garment. If he does, the new piece will pull away from the old, making the tear worse. And no one pours new wine into old wineskins. If he does, the wine will burst the skins, and both the wine and the wineskins will be ruined” (Mark 2:21, 22 NIV). Replacing faulty cells often leads to battery failures within six months. It’s best not to disturb the cells. Instead, allow them to age naturally as an intact family.<br />
Shorts or high leakage in a Li-ion cell are uncommon. If this occurs, the cell becomes unstable and a massive amount of power can dissipate, leading to a possible venting thermal breakdown. Such a leak can be compared to drilling a small pinhole into a high-pressure gas pipeline and holding a match to it. The resulting explosion could rupture the pipe. Similarly, the rushing current in the cell heats up the tiny malfunction, causes a major leak and releases all energy within seconds. (Read more about <span style="color: black;">Safety circuits for modern batteries</span>)<br />
Cell disintegration caused by internal disturbances lies outside the safeguarding ability of the protection circuit. Most cell failures occur when the <a href="http://www.ibuynow.com.au/batteries.php/1+116372+asus+battery">asus a32-f5 battery</a> has been damaged by shock and vibration, has been overcharged or has been overheated. Li-ion cells for electric powertrains and demanding industrial applications use a heavy-duty separator to reduce the risk of an electrical short. These batteries are larger than consumer-type packs. Saying that Li-ion has twice the energy density of NiCd can be a misnomer; some long-lasting Li-ion cells have a specific energy as low as 60Wh/kg, the same as NiCd.<br />
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<table align="center" border="0" cellpadding="10" cellspacing="1" style="width: 80%;"><tbody>
<tr><td style="background-color: #cccccc;">Caution:</td><td style="background-color: #eeeeee;">Applying a high current burst works best with nickel-based batteries. Do not use this method for lithium-ion cells.</td></tr>
</tbody></table><br />
Loss of Electrolyte<br />
The loss of electrolyte in a flooded lead acid battery occurs through gassing, as hydrogen escapes during charging and discharging. Venting causes the electrolyte to become more concentrated and the balance must be restored by adding clean water. Do not add electrolyte, as this would upset the specific gravity and shorten battery life through excessive corrosion.<br />
<em>Permeation</em>, or loss of electrolyte in sealed lead acid batteries, is a recurring problem that is often caused by overcharging. Careful adjustment of charging and float voltages, as well as operating at moderate temperatures, reduces this failure. Replenishing lost liquid in VRLA batteries by adding water has limited success. Although the lost capacity can often be regained with a catalyst, tampering with the cells turns the stack into a high-maintenance project that needs constant supervision.<br />
Nickel-based batteries can lose electrolyte through venting due to excessive pressure during extreme charge or discharge. After repeated venting, the spring-loaded seal of the cells may not seal properly again, and the deposit of white powder around the seal opening is evidence of this. Losses of electrolyte may also occur as part of faulty manufacturing. Dry-up conditions result in a “soft” cell, a defect that cannot be corrected. On charge, the voltage of a “dry” cell goes high because the <a href="http://www.ibuynow.com.au/battery-brand.php/laptop-battery">battery</a> has no clamping action and does not draw current.<br />
A properly designed and correctly charged lithium-ion cell should not generate gases, nor should it lose electrolyte through venting. In spite of what advocates have said, lithium-based cells can build up an internal pressure under certain conditions, and a bloated pouch cell is proof of this. Read more about <span style="color: black;">The Pouch Cell</span>. Some cells include an electrical switch that opens if the cell pressure reaches a critical level. Others feature a membrane that releases gases. Many of these safety features are one-way only, meaning that once activated, the cell becomes inoperable. This is done for safety reasons.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-46205175790343149302011-03-13T23:35:00.000-07:002011-03-13T23:35:40.994-07:00As phones get smarter, we can work them harder<strong>Guide book, map, audio walking tour and coffee locater - travellers seen stroking the screens of their new mobiles are on to something. Here's why.</strong><br />
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IS THAT a computer in your pocket? From the sights we see to what we have for breakfast, smartphones are revolutionising the way we travel.<br />
Nearly half of Australian mobile phone users now have data included in their monthly plan, according to the Australian Interactive Media Industry Association, and travel-related content is among the biggest uses.<br />
<div class="hidden" hash="1238418825" id="adspot-300x250-pos-3"><noscript></noscript><script type="text/javascript">
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document.getElementById("adspot-300x250-pos-3").hash = 1238418825;
</script></div>Maps and directions are some of the most popular applications, along with weather reports, restaurant and cafe information and event listings.<a href="http://www.ibuynow.com.au/batteries.php/1+29697+toshiba+battery">toshiba pa3399u-1bas battery</a><br />
Global market research firm Euromonitor International says business travellers were the first to adopt mobile travel technology but leisure travellers are quickly catching up.<br />
In Europe, smartphone penetration is expected to reach 92 per cent in three years' time, when nearly half of all European travellers are expected to be using smartphones to find travel information and/or make reservations. Many of these reservations will be made through social media platforms such as Facebook for iPhone, gradually diminishing the role of the traditional internet search.<br />
"Mobile travel applications are expected to gain ground thanks to their superior convenience," the Euromonitor report says.<br />
Location-based information is key to the uptake of smartphones, with global positioning system (GPS) technology allowing travellers to get time-sensitive information specific to a location - from what there is to see nearby to where to get the best coffee.<br />
Many smartphone applications also have an opt-in for "push messaging", where you receive location-based marketing information such as accommodation offers or entertainment listings.<br />
Lonely Planet's Asia Pacific travel editor, Shawn Low, says smartphone usage is "still in its infancy" in the travel sector and has infinite possibilities. Low is a big fan of mobile maps and navigation, along with other location-based applications such as Urbanspoon (guides to nearby restaurants) and Foursquare (travellers sharing their recommendations with others).<br />
The limitations to travellers are high international roaming charges and the relatively short <a href="http://www.ibuynow.com.au/batteries.php/1+116372+asus+battery">asus a32-f5 battery</a> life of smartphones.<br />
Working out what applications (or "apps" as they are more commonly known) to download can also be a challenge for those who are new to smartphones.<br />
Lonely Planet has led the way and offers 140 apps across four mobile platforms, with iPhone app downloads alone totalling 8.5 million to date. Along with city guides and phrase books, the company is venturing into audio walking tours, with London the first offering.<br />
If you're just getting started with travel apps, you can search the App Store (for iPhones, or similar sites for other types of smartphones) for the most popular travel apps or free travel apps.<br />
Free apps include Webjet and Skyscanner (airfare comparisons), TripAdvisor (traveller reviews) and TripIt (a popular itinerary planner).<br />
Many airlines offer apps that you can use to book and check in for a flight (receiving an electronic boarding pass that is scanned at the gate) and there are accommodation booking apps, along with travel health apps.<br />
You can download apps specific to your destination, including city guides, shopping guides, phrase books and public transport timetables. You can even download a free language translator that can translate words, phrases or whole paragraphs of text from one language to another.<br />
And for a different way of seeing things, the Google Goggles app - now available on both Android phones and iPhones - can cleverly identify images taken on your phone and search the internet for relevant information, such as linking to a Wikipedia page.<br />
For those who are already smartphone-savvy, what's coming next?<a href="http://www.ibuynow.com.au/batteries.php/1+121147+acer+battery">acer travelmate 6592 battery</a> Google's product manager for Android, Yu-Kuan Lin, believes we may not see anything drastically different over the coming year but will see existing technology coming together more smoothly.<br />
Lin says we can already do "a whole bunch of things" with our smartphones but they are all discrete activities, which means we have to juggle lots of different apps.<br />
The aim is to integrate different capabilities to make smartphones more intuitive, so they can be working quietly in the background while you are enjoying your holiday.<br />
As an example, your phone might "know" that you are heading to a particular museum because you looked up the directions; the phone may then search the internet and have a museum guide downloaded for you by the time you get there.<br />
"We might find we are spending less time on the phone but it is doing more for us," Lin says.<br />
<strong>Don't get stung</strong><br />
Many a traveller has suffered a severe case of Phone Bill Shock after using a smartphone overseas. One of the best ways to keep costs down is to use free Wi-Fi hotspots, which can be found at fast food restaurants and coffee shops, among other places.<br />
However, you will need to check your settings to make sure you're not connecting to cellular networks.<a href="http://www.ibuynow.com.au/batteries.php/1+72686+replacement-for-dell+battery">dell latitude d620 battery</a><br />
If you're going to use global roaming, contact your mobile provider before you leave home to find out what the range of charges will be. An alternative is to source a local, pre-paid SIM card at your destination.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-91731625421438419262011-03-02T19:25:00.000-08:002011-03-02T19:25:10.892-08:00Compare Different Laptop ComputersThere are dozens of laptop manufacturers, and each one has a few dozen models or more. When you decide to buy a laptop, even if you are an experienced user, you may at first have trouble narrowing down the field and deciding what to buy. There are many choices of hardware that can be added, but there are some basic categories you can use to compare computers.<br />
1. Look at the battery life. <a href="http://www.ibuynow.com.au/battery-info.php/replacement-for-dell+laptop-battery">Laptop batteries</a> can come with anywhere from three to 12 cells, and how long a cell will charge your laptop is different based on the hardware of the laptop. There should be a listing for how long the battery will last in terms of hours. If a six-cell will last three hours, an upgrade to a 12-cell will last twice as long on the same computer.<br />
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2. Measure the size of everything. You can get netbooks that are small and have a small screen, or a large-screen laptop. You should also consider the hard-drive size. Some netbooks only have a 10 or 20 gigabyte flash drives, and others will have hundreds of gigabytes. The size you want can help narrow things down significantly.<br />
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3. Consider the power. The process speed, the amount and speed of the RAM and the amount of cache on a chip determine the overall speed of a computer. More RAM is more important than faster RAM. More cache is more important than processor speed when the numbers are somewhat close. More processors, such as dual or quad core, are much better than single cores with higher speeds.<a href="http://www.ibuynow.com.au/battery-info.php/toshiba+laptop-battery">toshiba battery</a>battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-34088222393107387012011-03-01T18:57:00.000-08:002011-03-01T18:57:30.660-08:00Seesaw Concept Offers Easy Tips On Getting Batteries OutGetting <a href="http://www.ibuynow.com.au/">AA batteries</a> out of common household devices can be a real pain in the AAss. Now, with the Seesaw battey concept from Young Suk Kin, the scales may have tipped in your favor.<br />
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Sure, AA batteries are great and we couldn’t really do without them. TV remotes, hair trimmers, kids’ toys – any number of devices use these batteries and there is an almost-constant need to change one set or another in a home. While the industry has made strides in creating longer-lasting and rechargeable batteries, they have not addressed the fact that the standard cylinder shape of the things makes them a massive pain to remove once they have become lodged in a favorite toy or necessary remote. Often, it seems as though the slightest imperfection in a <a href="http://www.ibuynow.com.au/battery-info.php/replacement-for-dell+laptop-battery">device’s battery</a> cavity means that the AA will go in easily but getting it out will require so much force that buying a new – whatever – might just be easier.<br />
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No more, says Young Suk Kin and the Seeway battery. No more!<br />
Kin has taken the traditional AA battery design and narrowed the ends, keeping the positive/negative essentials but making the removal process far easier. The tapered ends mean that only small amount of force is needed to pop the Seesaw up and out of the device and into the waiting hand of a user for replacement or charge. Little else about the <a href="http://www.ibuynow.com.au/battery-info.php/toshiba+laptop-battery">battery design</a> has changed, aside from coloring and a slightly more sleek middle body – but the ends are a revelation.<br />
<img alt="" class="aligncenter size-medium wp-image-367" height="149" src="http://www.battery-center.net/blog/wp-content/uploads/2011/03/see_saw_battery2_preview-300x224.jpg" title="see_saw_battery2_preview" width="200" /><br />
While we can see their being problems with shifting batteries or ends that don’t connect quite right, a few iterations of the Seesaw design should be enough to see it working perfectly. It’s clever and simple – something that most great inventions share, and we hope it can get a positive response in the <a href="http://www.ibuynow.com.au/battery-info.php/hp+laptop-battery">battery market</a>.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-49175817077912654532011-02-28T00:36:00.000-08:002011-02-28T00:36:24.325-08:00How to Rejuvenate a Lithium-Ion Laptop Battery<a href="http://www.ibuynow.com.au/battery-info.php/toshiba+laptop-battery">Lithium-ion batteries</a> are found in many common portable electronic devices. Thanks to their small size, lightness and power output, they have quickly become the industry standard for use in cell phones, PDAs and laptops. Unfortunately, there are a few drawbacks to lithium-ion technology that can cause its capacity to be greatly reduced. If your battery isn't holding a charge like it used to, there are things you can do to extend your battery's life.<br />
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1. Charge your battery every day, if possible, and don't let the charge reach zero. Your battery should reach 80 percent charge in an hour or two (depending on its size), but the last 20 percent may take a bit longer. For best results, keep your battery at 100 percent as much as possible.<br />
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2. Avoid heat and store unused batteries in a cool place. If you won't be using the battery for a long time, charge it to 50 percent, remove it from the device and store it in the refrigerator. The cooler temperature will prolong its life. Conversely, don't expose lithium-ion batteries to extended periods of heat. High heat degrades battery life much more quickly, so leaving your iPod or laptop in a hot car on a sunny day will accelerate its aging process.<br />
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3. Only <a href="http://www.ibuynow.com.au/battery-info.php/replacement-for-dell+laptop-battery">buy batteries</a> when needed. Lithium-ion batteries "age" from the time they're manufactured and lose capacity slowly and predictably. For example, a brand-new, unused battery drains slowly because of increased internal resistance and its built-in voltage monitoring circuit. A well-ventilated laptop battery, kept at 100 percent charge most of the time, will irreversibly lose about 20 percent capacity per year.<br />
4."Deep cycle" your battery every 30 days. Let your device drain the battery until it turns off, then charge the battery to 100 percent. This recalibrates the internal circuitry that detects how much charge is left, giving you more <a href="http://www.ibuynow.com.au/battery-info.php/hp+laptop-battery">accurate hp battery</a> readings.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-71557240666274374592011-02-22T19:58:00.000-08:002011-02-22T19:58:09.850-08:00Tips To Troubleshoot a Dell Laptop BatteryFrom the ultra-powerful Dell Alienware laptops to the added budget-friendly Dell Inspiron line, all Dell laptops run off of a <a href="http://www.ibuynow.com.au/battery-info.php/replacement-for-dell+laptop-battery">battery</a> and await on it whenever you abstract the computer from its AC adapter. Problems with the battery anon affect the advancement of your laptop. Troubleshoot the array to define areas that may charge absolute so you can adore your Dell laptop's abounding accretion potential.<br />
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1. Check that the Dell laptop battery is installed. Turn off the laptop and disconnect it from its power source. Flip the laptop over. Some models have the <a href="http://www.ibuynow.com.au/batteries.php/1+87521+replacement-for-dell+battery">dell latitude d630 battery</a> visible as part of the laptop's undercarriage, while others require you to remove a plastic panel to see the battery. If you're unsure, consult your product-specific manual.<br />
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2. Remove the battery. On most Dell laptops, the battery is removed by sliding the battery away from the laptop body at an angle. Inspect the metal elements on the end of the battery. Batteries with corroded, missing or bent elements may need to be replaced with a new <a href="http://www.ibuynow.com.au/batteries.php/1+121633+replacement-for-dell+battery">dell m1530 battery</a> from Dell's official store (888-364-6022).<br />
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3. Reinsert the battery into the laptop's undercarriage. Make sure the battery is oriented properly so that its metal elements are in contact with the metal elements inside the laptop. An improperly inserted <a href="http://www.ibuynow.com.au/batteries.php/1+92762+replacement-for-dell+battery">dell xps m1330 laptop battery</a> will not function.<br />
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4. Connect the Dell laptop to a power source using its included AC adapter cable. Check that the cable is powered; its indicator light, positioned either on the AC adapter block or on the plug that enters the computer, should be glowing.<br />
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5. Turn the Dell laptop back on. Double-click the <a href="http://www.ibuynow.com.au/batteries.php/1+127581+replacement-for-dell+battery">vostro 1510 battery</a> icon in the Windows taskbar, located on the bottom right corner of the screen. A new window will appear. Choose "Portable/Laptop" from the drop-down menu to turn on power management. This may resolve issues with the <a href="http://www.ibuynow.com.au/batteries.php/1+127559+replacement-for-dell+battery">dell vostro 1710 battery</a> being drained faster than normal.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-44262484596151396792011-02-21T20:01:00.000-08:002011-02-21T20:01:05.213-08:00How to really hack a 6 volt batteryTHIS ARTICLE IS FOR ALL OF YOU WHO HAVE SEEN OR HEARD OF HACKING A 6 VOLT LANTERN BATTERY TO GET "AA" BATTERIES OUT OF IT. The truth is that once you open up a <a href="http://www.ibuynow.com.au/">6 volt battery</a>, you will not find any AA batteries inside - at least not using EverReady, Duracell, or Energizer batteries. Here is what you will find:<br />
<ol id="intelliTxt"><li id="jsArticleStep1"><div class="stepNumber">1</div><span class="image"><img alt="" battery="" cell="" f="" src="http://i.ehow.com/images/a04/ak/bd/really-hack-volt-battery-1.1-120X120.jpg" title="" /><script type="text/javascript">
jQuery(document).ready(function(){
jQuery('#jsArticleStep1 span.image a:first').attr('href','http://i.ehow.com/images/a04/ak/bd/really-hack-volt-battery-1.1-800X800.jpg');
});
</script> <div class="caption" id="nointelliTXT" style="width: 120px;">"F" Cell battery</div></span>Lets do a little math first to show the reality of voltage in batteries. Most singular AA batteries put out 1.5 volts. If you Multiply 1.5 by 4 - then you get 6 volts. You can achieve 6 volts by only using 4 battery cells wired in series. If you actually have 32 "AA" batteries in a 6 volt <a href="http://www.ibuynow.com.au/battery-info.php/replacement-for-dell+laptop-battery">dell battery</a>, then you will get 48 volts. Now I realize that you can run batterieis in parallel and in series, but lets talk basics here - if you run batteries in parallel, they tend to discharge each other. Do me a favor and test a single battery cell on a voltmeter - you will get 1.5 volts roughly.</li>
<li id="jsArticleStep2"><div class="stepNumber">2</div><span class="image"><img alt="Eveready 6 volt battery" src="http://i.ehow.com/images/a04/ak/bd/really-hack-volt-battery-1.2-120X120.jpg" title="Eveready 6 volt battery" /><script type="text/javascript">
jQuery(document).ready(function(){
jQuery('#jsArticleStep2 span.image a:first').attr('href','http://i.ehow.com/images/a04/ak/bd/really-hack-volt-battery-1.2-800X800.jpg');
});
</script> <div class="caption" id="nointelliTXT" style="width: 120px;">Eveready 6 volt battery</div></span>Alright, so if you tried to open up a "Duracell", "Rayovac", or Eveready" 6 Volt lantern battery shown in the image below in the hopes of finding 32 "AA" batteris, then you were probably disappointed once you got the battery open. Now I realize that I did not use the brand available in the video, it is a Powercell 6 Volt Lantern <a href="http://www.ibuynow.com.au/batteries.php/1+87521+replacement-for-dell+battery">dell latitude d630 battery</a>, and I could not find one anywhere. If you can find one, it might very well have "AA" batteries in it - but other popular models do not. However, I still caution you to take two "AA" batteries with you and test the overall height of any 6volt battery on the market - the 6 volt batteries are shorter than two "AA" batteries stacked on top of each other!</li>
<li id="jsArticleStep3"><div class="stepNumber">3</div><span class="image"><img alt="" src="http://i.ehow.com/images/a04/ak/bd/really-hack-volt-battery-1.3-120X120.jpg" title="" /><script type="text/javascript">
jQuery(document).ready(function(){
jQuery('#jsArticleStep3 span.image a:first').attr('href','http://i.ehow.com/images/a04/ak/bd/really-hack-volt-battery-1.3-800X800.jpg');
});
</script> </span>Inside the 6 Volt lantern battery are actually four very long "D" shaped batteries. In the Eveready #1209 6volt battery that I used, the four battery cells found inside are size F. These batteries are about the same diameter as a D cell but about 1-1/2 times the length. They are used in other types of lantern, fence chargers and some special lighting batteries. See the image below to get an idea what is inside a standard 6 volt <a href="http://www.ibuynow.com.au/batteries.php/1+121633+replacement-for-dell+battery">dell m1530 battery</a>.</li>
<li id="jsArticleStep4"><div class="stepNumber">4</div>In some 6 Volt lantern batteries, such as the Duracell and Energize, there are 4 "D" cells connected in series to achieve 6 volts. The rest of the battery case is filled with foam.</li>
<li id="jsArticleStep5"><div class="stepNumber">5</div>You can use these "F" sized batteries in MAG flashlights, keyboards, or any other electronic equipment that allows you to stack "D" batteries.</li>
<li id="jsArticleStep6"><div class="stepNumber">6</div>So what is the point of hacking a 6 volt "D" lantern battery. Well if you need a bunch of "D" batteries that can be stacked together to run some electronic equipment, these 6 volt Lantern batteries only cost about $4.50 at Meijer, and you can save some money by using "F" batteries stacked in with your "D" batteries".</li>
</ol>battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0tag:blogger.com,1999:blog-6029652086975452114.post-12637651589892760632011-02-20T22:39:00.000-08:002011-02-20T22:39:08.762-08:00The History of Lithium Ion BatteriesThe history of <a href="http://www.ibuynow.com.au/battery-info.php/replacement-for-dell+laptop-battery">lithium-ion batteries</a> begins with allure and ends with innovation. Lithium ions add assurance advantages to rechargeable array technology. As a result, they are a accepted antecedent of ability for corpuscle phones, medical instruments, ability accoutrement and added carriageable devices.<br />
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<strong>Lithium</strong><br />
1. The first step in tapping into lithium's potential took place in 1817. Johann Arfvedson isolated the lithium ion and named it after the Greek word "lithos," which means stone. Almost 100 years later, Gilbert Newton Lewis, the dean of the chemistry department at the University of California at Berkeley, began paving the way for today's lithium-ion battery through his research. However, the first non-rechargeable lithium batteries were not commercially available until the early 1970s, according to Isidor Buchmann, founder of Cadex Electronics.<br />
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<strong>Metal's Role</strong>2. The non-rechargeable lithium batteries of the 1970s and 1980s contained lithium metal. Safety concerns about rechargeable lithium metal <a href="http://www.ibuynow.com.au/batteries.php/1+92762+replacement-for-dell+battery">dell xps m1330 laptop battery</a> emerged because of potentially violent reactions to temperature changes. After a Japanese man suffered facial burns from exposure to a volatile lithium metal battery, the unacceptable instability spurred increases in lithium-ion research.<br />
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<strong>Turning Points</strong><br />
3. A significant advance in technology expanded the lithium battery's potential. "The invention of an intercalation battery electrode technology is a landmark solid-state chemistry achievement," said Charles J. Scuilla, IOMAXIS Federal Programs vice-president. This invention gave lithium ions "rechargeability." By 1991, the accomplishment, achieved by the efforts of Dr. John Goodenough and Dr. M. Stanley Wittingham, prompted the commercialization of lithium-ion rechargeable batteries.<br />
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<strong>Commercialization</strong><br />
4. The Sony Corporation was the first to introduce lithium-ion <a href="http://www.ibuynow.com.au/batteries.php/1+127581+replacement-for-dell+battery">vostro 1510 battery</a> technology to consumers, beginning the modern evolution of lithium-ion chemistry. In 1997, battery producers turned away from the use of coke as a negative electrode and replaced it with graphite.<br />
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<strong>Quantum Leap</strong><br />
5. On November 16th, 2009, the University of Dayton Research Institute claimed a "quantum leap in energy storage technology." Their announcement of "the first solid-state, rechargeable lithium-air battery" may present an eventual threat to the lithium-ion battery. The university's researchers said the new technology meets demands for safer lithium-based batteries. However, Eric Isaacs, director of Argonne National Labs, said, "The obstacles to Li-air batteries becoming a viable technology are formidable and will require innovations in materials science, chemistry and engineering." As of March 2010, the reign of the lithium-ion <a href="http://www.ibuynow.com.au/batteries.php/1+127559+replacement-for-dell+battery">dell vostro 1710 battery</a> is safe.battery and chargerhttp://www.blogger.com/profile/01425770697440086810noreply@blogger.com0