Re-understand notebook lithium battery maintenance

Li-ion batteries in a life cycle in general can be 300 to 500 times charge-discharge. So many people think that, as long as using less battery, so that you can to a certain extent, played a role in extending battery life. But they did ignore the original Dell Inspiron E1705 Battery that the physical nature of the end when the battery off the assembly line, it's internal life, the clock will then start walking.

So even if you do not set aside the battery, lithium Dell Latitude D510 Battery life was only two to three years you can come to an end of. Battery capacity caused by reasons for the decline was due to oxidation caused by the battery internal resistance increases. When the electrolytic cell resistance reaches a certain point, although this time the battery still be full of electricity, but the battery has been unable to release the stored electricity.

Caused by lithium LIFEBOOK T4010 battery is the speed of this aging temperature and set aside when the charge state of preservation decision. I will give a table to illustrate the different situations of these two factors, the impact on the battery capacity.

Can be seen from the table, high charge state and the high temperature accelerated the decline in Lifebook T4220 battery capacity. Therefore, if possible, as far as possible, after the battery charge to 40% placed in a cool place to save. This allows the preservation of a long period, the battery protection circuit is in its working state. And if the battery is fully charged, will be placed at high temperatures, which will cause great damage to the battery, the table has also been seen, charge 100% in the 60 ° C environmental conservation, 3 months after the battery capacity fell by 40% .

Therefore, how to save the battery solved the issue, but also leads to another focus of everyone has been argued, that is when we use a fixed power supply when there is a need to remove the Apple A1148 battery? Before the resolution of this question let us first analyze the use of fixed power supply when the battery placed in a computer environment in which ... ... at this time due to charge notebook computers role in protection circuit, so that the battery remained at 100% of full power state, and this When the battery in which the ambient temperature between 25-30 ° C, at least, if the hot weather, this temperature will be higher, then from the table, you should be very natural to come to a conclusion that it is so to do this would actually damage the battery, causing a decline in its capacity.

But despite the use of laptop computers, high-temperature will bring damage to the Apple A1175 battery. But Qudiao battery, use only a fixed supply, there will still some danger that dust and moisture will cause some damage to the battery, while the use of notebook computers in order to avoid a sudden power notebook computers may cause damage, so Manufacturers generally warn users not to remove the battery. Of course, this result will be naturally imagined, your battery as often in such a relatively poor environment, it will not be long over, and then you will need to go to repair center to replace the battery, this way, the benefit of course, is a manufacturer.

Finally we spotlight a lithium battery that is exactly how a reasonable charge and discharge this issue. For the lithium battery is best for partial discharge, rather than fully discharged, and to as much as possible to avoid frequent full discharges. Regular Apple A1185 battery too low discharge of the result can only be scrapped so that the battery in advance, because if the battery into every cell of 2.5 volts below the battery's internal safety circuitry will be switched on, this time the battery will become some bad spent. Therefore, in order to avoid such situations from occurring, do not save the battery power before its release was erased, but rather a number of electric charge in the store before, and again before the first fully charged.

All in all, in order not to make your premature loss of the role of the battery, then the use of normal, you should try to comply with the following principles:

A. avoid full discharge, and often for lithium batteries. The repeated arbitrarily rechargeable lithium Toshiba PA3331U-1BRS battery damage is very small, almost negligible.
B. will need to keep hold of lithium batteries placed in the shade, remember not to put in the refrigerator. Avoid placing hot car, such as a long time to save the battery charge to 40% in place.
C. most of the time if you are using a fixed power supply, please remove the batteries placed in the shade.
D. no need to purchase spare lithium batteries for storage, so this piece is actually a waste of Toshiba PA3356U-3BRSbattery.

Battery is brought to use, as long as the attention to rational use and preservation methods, there is no need to care for their excessive, making it possible for its owners contribute more to performance is the most important.

The article Via Battery blog

Re-understand notebook lithium battery maintenance

Li-ion batteries in a life cycle in general can be 300 to 500 times charge-discharge. So many people think that, as long as using less battery, so that you can to a certain extent, played a role in extending battery life. But they did ignore the original Dell Inspiron E1705 Battery that the physical nature of the end when the battery off the assembly line, it's internal life, the clock will then start walking.

So even if you do not set aside the battery, lithium Dell Latitude D510 Battery life was only two to three years you can come to an end of. Battery capacity caused by reasons for the decline was due to oxidation caused by the battery internal resistance increases. When the electrolytic cell resistance reaches a certain point, although this time the battery still be full of electricity, but the battery has been unable to release the stored electricity.

Caused by lithium LIFEBOOK T4010 battery is the speed of this aging temperature and set aside when the charge state of preservation decision. I will give a table to illustrate the different situations of these two factors, the impact on the battery capacity.

Can be seen from the table, high charge state and the high temperature accelerated the decline in Lifebook T4220 battery capacity. Therefore, if possible, as far as possible, after the battery charge to 40% placed in a cool place to save. This allows the preservation of a long period, the battery protection circuit is in its working state. And if the battery is fully charged, will be placed at high temperatures, which will cause great damage to the battery, the table has also been seen, charge 100% in the 60 ° C environmental conservation, 3 months after the battery capacity fell by 40% .

Therefore, how to save the battery solved the issue, but also leads to another focus of everyone has been argued, that is when we use a fixed power supply when there is a need to remove the Apple A1148 battery? Before the resolution of this question let us first analyze the use of fixed power supply when the battery placed in a computer environment in which ... ... at this time due to charge notebook computers role in protection circuit, so that the battery remained at 100% of full power state, and this When the battery in which the ambient temperature between 25-30 ° C, at least, if the hot weather, this temperature will be higher, then from the table, you should be very natural to come to a conclusion that it is so to do this would actually damage the battery, causing a decline in its capacity.

But despite the use of laptop computers, high-temperature will bring damage to the Apple A1175 battery. But Qudiao battery, use only a fixed supply, there will still some danger that dust and moisture will cause some damage to the battery, while the use of notebook computers in order to avoid a sudden power notebook computers may cause damage, so Manufacturers generally warn users not to remove the battery. Of course, this result will be naturally imagined, your battery as often in such a relatively poor environment, it will not be long over, and then you will need to go to repair center to replace the battery, this way, the benefit of course, is a manufacturer.

Finally we spotlight a lithium battery that is exactly how a reasonable charge and discharge this issue. For the lithium battery is best for partial discharge, rather than fully discharged, and to as much as possible to avoid frequent full discharges. Regular Apple A1185 battery too low discharge of the result can only be scrapped so that the battery in advance, because if the battery into every cell of 2.5 volts below the battery's internal safety circuitry will be switched on, this time the battery will become some bad spent. Therefore, in order to avoid such situations from occurring, do not save the battery power before its release was erased, but rather a number of electric charge in the store before, and again before the first fully charged.

All in all, in order not to make your premature loss of the role of the battery, then the use of normal, you should try to comply with the following principles:

A. avoid full discharge, and often for lithium batteries. The repeated arbitrarily rechargeable lithium Toshiba PA3331U-1BRS battery damage is very small, almost negligible.
B. will need to keep hold of lithium batteries placed in the shade, remember not to put in the refrigerator. Avoid placing hot car, such as a long time to save the battery charge to 40% in place.
C. most of the time if you are using a fixed power supply, please remove the batteries placed in the shade.
D. no need to purchase spare lithium batteries for storage, so this piece is actually a waste of Toshiba PA3356U-3BRSbattery.

Battery is brought to use, as long as the attention to rational use and preservation methods, there is no need to care for their excessive, making it possible for its owners contribute more to performance is the most important.

The article Via Battery blog

Laptop battery CAUTION AND USAGE

http://www.laptops-battery.co.uk/ Found some laptop battery caution and usage in the internet, and I share the tips to our readers.

When laptop battery is not used normally, battery and battery device would be damaged.

New battery must be charged by specific charger.

Keep Dell laptop battery dry and be ventilative.

There is organic flammable in battery. If it is not used normally, it will be broke, leaking water, or too hot. These will cause battery damaged perpetually. There is safe protection device inside the battery.

Do not use Inspiron E1405 Battery near the fire, stove or the place in a temperature higher than 80¡ã

The battery safe protection parameter and index would be damaged if battery is in the water. Then the Latitude D830 Battery can not work regularly. Finally the battery might be too hot, get fire or explode.

Do not weld the battery with flat soldering because soldering melts battery insulator and damages safety circuit.

Do not extrude the laptop battery with heavy object or the battery might be out of shape.

If the battery is connected in reverse terminal, the battery would be too hot, get fire or be damaged.

Some functions of the Latitude D820 Battery can not be used if the pack is not working in a specific machine. And the battery life would be shortened.

If not using the specific adapter or change the specific adapter parameter, the battery would be too hot, get fire or explode.

Once the Sony VGP-BPS9/B battery is found having problems, stop using it immediately.

The article Via laptop battery blog

Laptop battery purchase attention

We often see the 50$ original Dell laptop battery or Apple battery in Ebay. We are also asked about that : your battery is a original battery or not. You should realize that : the battery with the original Brand logo maybe not the original battery.

According to my 5-6 years market experience of laptop battery industry , http://www.battery4.us share some battery purchase note with you.

1. Now the laptop battery market is confusedly. Many low-cost "original" laptop batteries flooded the market. Most of these batteries are the original renovation battery (using a low-quality cells); the same pack with the original battery, no protection battery quality; Some of it is a true original stock battery, but most of them are produced for a long time (even more than two years).

The battery performance greatly reduced, as we all knows laptop battery is a consumable items, lose the performance even in stock; And there is no real brand new original laptop battery in the market, because battery manufacturers will be asked to produce the detail terms number battery by laptop manufacture, according to the amount of customized. The original laptop battery has an official one-year warranty, the market prices are mostly in the $150-200.

2. We all know, the lowest-cost maintenance approach to repair laptop battery (as Lifebook T4220 battery ) is replace the cells. Note that this is the least, sometimes you may have to replace protection board. A good imported batteries cell such as Sanyo, Sony, Samsung and other brands are 5.0$ or more in the market, high-capacity of 6$. Replaceme a 6-cell battery will takes about 35$ dollars or more.

Therefore, we can estimate the original laptop battery Price: 6 cell + battery protection board + enclosure + test fee + R & D costs + packaging + transportation + labor costs + a series of warranty after-sales and other costs, original laptop battery ex-factory price at least 60$, so You should carefully select these 40-50$ "original" Toshiba laptop battery in the market .

3. The main difference between High-quality and low-quality laptop battery Cells

I make the laptop battery as example to explain the diffenence for everyone. There are three kinds laptop battery in the market as following:

1. An original laptop batteries, good quality, need not any evaluation.
2. The famous brand laptop batteries like http://www.battery4.us, high quality and excellent price (the people's favorite kind laptop batteries).
3. Waste batteries and "original batteries" gave as a gift when buying laptop, usually only stand 2 hours or less. Because these two kinds batteries capacity failed to reach the nominal capacity of standby time. So it is the worst laptop battery (Dell Inspiron 6000 Battery).
4. The replacement battery between 60$-100$ in the market. The battery can standby for 3-4 hours as original battery. But after used abour 10-12 months. The battery capacity reduced a lot or even scrapped. Although it can achieve the nominal capacity and the same standby time as original battery. But the other properties of the battery such as the battery charge and discharge times, the battery anti-aging properties simply can not up to standard. So it can only use 10-12 months.

Most of the 3-6 warranty months warrany "Original battery" and "OEM Dell XPS M140 Battery " on the market are made of neutral batteries: It achieve the use of nominal time, but it is difficult to achieve the standard charge and discharge times, battery aging fast, average life between 3-6 months. (so they can only guarantee the battery up to six months).

In the end if you want to buy the high quality cheap price battery, just buy the 1 year warranty battery replacement in http://www.battery4.us/. Do not buy the "6 month or less warranty Original battery" in Ebay. As I know I saw many "original sony VGP-BPS8 VGP-BPS9 battery" in Ebay.

The article Via Battery For US

Why battery standby time more shorter than manufacturers claim

All along, many consumers often complain that their laptop battery standby time is always shorter than the manufacturers claims. For this question, the laptop users must realize that. The original notebook manufacturers announced running time is standard time, that is the standard operating procedures time in the measured values. But the manufacturers want to make the value "more attractive".

So in the test time most manufacturers will reduce the notebook power consumption. For example: Lower notebook LCD screen's brightness , close the CD-ROM the wireless card infrared and Bluetooth; Donot run large-scale software in the operating system, play video, power management settings will be adjusted to optimal Dell XPS M140 Battery performance;

Or even just boot into the operating system and do not run any other programs. In this way CPU, hard drives, memory, screen and other equipment will be in a very low-power state. But users usually use the notebook in the normal power consumption. So users battery standby time is shorter than the manufactures claimes.

Laptop battery duration is very important for the users. Mobility is the soul of notebook advantage. If the laptop leave the power the Inspiron E1405 Battery is most important to run the laptop. So laptop battery standby time is an important indicator which can not be ignored.

For manufacturers, what is the point of the Apple PowerBook G4 15 inch Battery life? First of all, we all know, there are only two ways to increase the battery usage time. First is increase battery capacity, the second is to reduce the power consumption of the hardware. However, to manufacturers "added the amount of not to raise fares" is almost impossible.

In the hardware side, now the most laptop basic framework are similar, each brand notebook power consumption are in the same level. Only one possible way is to carry out some small manufacturers optimize the circuit, coupled with a number of specially developed software to reduce power consumption. So it would involve a technical issue, for same configuration laptop and same capacity PowerBook G4 12 inch Battery, longer battery life, the better laptop technology.

Second, the longer battery life can be used as a vendor hype of the highlights. That will help to improve their brand awareness. Finally longer Apple PowerBook G4 17 inch Battery life time is often able to attract many customers eye to buy the product. Which is the most important point to manufactures.

Because of the points mentioned above, in reality, manufacturers used to mislead consumers consumption practices. Because manufacturers customarily used such tactics and many users are fooled unaware of the circumstances. Thus giving rise to the use of laptop battery time and time does not match the nominal become the emergence of a widening trend.

The article Via laptop battery blog

Some laptop battery introduce

Notebook emphasis on mobility, laptop battery is one of the key, the use of time has become increasingly the subject of attention, the author collected some information about this laptop battery information, and share with you

Let's start talking about the Dell Inspiron 1720 Battery materials, batteries used in notebook computers there have been three types: nickel-chromium batteries, nickel-metal hydride batteries, lithium batteries; they are generally expressed as: Ni-Cd Ni-Cd, Ni-MH Ni-MH, lithium Li.

The first laptop is to use Ni-Cd nickel-cadmium batteries, nickel-cadmium batteries because it has many drawbacks, such as: bulky, heavy weight, capacity, small, short life, there are memory effect and so on. As well as nickel-cadmium batteries have been eliminated, does not make sense to discuss it, we all know what to do.

There are now battery-Li Lithium-Ion battery and Ni-MH Ni-MH two kinds.

 In fact, can be divided into two kinds of lithium Pavilion DV5000 Battery s, a lithium electricity, the other is the lithium-ion batteries. Lithium-Ion battery in the early days there, but it is not safe when used often in charge when burning, bursting, it is because the lithium is too active reason. Then there is the improved version of the "lithium-ion batteries", which joined the element lithium can inhibit the active ingredients, so that lithium really achieve safe, efficient and convenient. While the old lithium battery and therefore eliminated. As to how to distinguish them from the battery's label will be able to identify, lithium battery for Li, lithium-ion battery for Li-ion. Now, laptops to use the so-called lithium, in fact, lithium-ion battery. Lithium-ion battery charge and discharge times in the 400-600 times, specially modified products, but many times 800.

If the charge once a day basis, the best lithium Latitude D620 Battery life of nothing but more than two years, so the laptop battery warranty period is also the longest of the year because of this Ni-MH battery is the most environmentally friendly battery, pay attention to environmental protection, national have strongly advocated the use of nickel-metal hydride batteries, because the ease of recycling, and the damage to the environment are minimal. However, nickel-metal hydride batteries and lithium compared, there are still some disadvantages: charging for a long time in weight than the sink capacity than lithium is small, there is a strong memory effect. It is the memory, while not as big as nickel-cadmium batteries, but still need to discharge, the user must be exhausted before charging.

However, the number of Ni-MH rechargeable Sony VGP-BPS8 batteries can be achieved for more than 700 times, some good quality product charge and discharge up to 1,200 times, more so, and lithium-ion battery, Ni-MH battery live longer than the lithium batteries, but also the price of nickel-metal hydride batteries have is much lower than the lithium batteries. This is the nickel-metal hydride battery can be the reasons for market share corner bar.

Currently on the market, whether it is lithium-ion batteries or Ni-MH Sony VGP-BPS9 Sony VGP-BPS9/B battery, its capacity sizes are based on mAh as a unit, its Chinese name is mAh. MA hours directly related to the size of the notebook usage time. But not the larger laptop battery the longer, which also linked to the notebook's components to decisions, such as: CPU, graphics card and so on, using the Centrino CPU, ATI-MOBILITY RADEON graphics cards and many other hardware and use of energy-saving technologies P4 CPU, NVIDIA notebook graphics card, compared with the same volume of electricity

Apple Battery indicator light function

Learn about the location and new functions of the battery indicator lights on MacBook (13-inch, Aluminum, Late 2008) and MacBook Pro (Late 2008) and later computers. These computers use a new, more convenient location for the battery indicator lights, when compared with previous models.

Products Affected
MacBook Pro battery (17-inch, Mid 2009), MacBook Pro (13-inch, Mid 2009), MacBook Pro (15-inch, Mid 2009), MacBook Pro (15-inch, 2.53GHz, Mid 2009), MacBook Pro (17-inch, Early 2009), MacBook (13-inch, Aluminum, Late 2008), MacBook Pro (15-inch, Late 2008)

The battery indicator lights are located along the left side of the computer. This allows for quick and easy verification of the Apple A1060 Apple A1079 battery's charge status while the computer remains solidly in-place.

When you press the battery indicator light button, the corresponding flashes (or pattern of flashes) presents either the current charge status or a diagnostic status.

The chart below describes the behaviors you may see when you press the Apple A1045 battery indicator light button.

Battery indicator light behavior Description and instructions

• The first LED flashes for 5 seconds. The battery has not yet been charged to what's required for a single indicator light. Ensure the MagSafe adapter is properly connected.
• LEDs representing the current charge flash 5 times, then fade. The battery is charging, but does not have a full charge.
• All LEDs flash 5 times. The Apple A1078 battery needs to be replaced. Please schedule a service appointment with either an Apple Retail Store or an Apple Authorized Service Provider.
• LEDs flash from left to right and back again 5 times. The battery is not installed, or is not recognized. Verify that the battery is installed correctly.

Note: Once the MagSafe power adapter is first connected to the computer, the MagSafe's LED glows. An amber light indicates the iBook G4 Battery is charging. A green light indicates the battery is fully charged, or not installed correctly in the computer.

Tips for maximizing apple battery charge

You can take some easy steps to prolong the charge of your Apple Macbook battery portable's .

Here are some simple settings and steps you can take to get the most out of your MacBook, MacBook Pro 13 inch battery , MacBook Air, iBook G4 or PowerBook G4 battery.

Optimize your battery settings in Energy Saver preferences

1. From the Apple menu, choose System Preferences.
2. From the View menu, choose Energy Saver.
3. Click Show Details.
4. Choose Battery or Battery Power from the "Settings for" pop-up menu.
5. Choose Longest or Better Battery Life from the Optimize Energy Settings pop-up menu.

These settings will put the hard disk to sleep whenever possible and reduce the computer's microprocessor performance in order to maximize its Apple A1175 battery life. If you are using processor-intensive applications, you may wish to change these settings so the microprocessor performance is no longer reduced.

Set your screen brightness to the lowest comfortable level

Press the F1 (dimmer) and F2 (brighter) keys to dim the screen until the brightness is as low as possible and the screen is still comfortable to look at.

Turn off unused features and technologies.

Just as you would turn off the lights in an unoccupied room, turning off unused features and technologies can help maximize your Apple A1185 battery life, too. Here are a few suggestions:

• Eject CDs and DVDs you're no longer using. Every so often, the optical drive spins up to read CDs or DVDs. This consumes a small amount of power.
• Disconnect peripherals when you're not using them. Connected peripherals, such as printers and digital cameras, can draw power from your Apple iBook G4 12 inch Battery even when you're not using them.
• Shut down any runaway applications

If you're not in a location where you need to use AirPort or Bluetooth, you can turn them off to save A1008 A1012 power.

To turn off AirPort:

1. From the Apple menu, choose System Preferences.
2. From the View menu, choose Network.
3. From the Show selection, choose Network Port Configuration.
4. Uncheck Airport from the list.
5. Click Apply Now.

To turn off Bluetooth in Mac OS X 10.2 or later in Apple A1057 A1060 :

1. From the Apple menu, choose System Preferences.
2. From the View menu, choose Bluetooth.
3. Click the Settings tab.
4. Click Turn Bluetooth Off.

My shoppingg experience buying Dell inspiron E1505 accessories

Two month ago, my Dell E1505 battery failed after its 1 year warranty. So I should buy a new one for my coming holiday in Hawaii. Now I will never shopping in Ebay or Amazon. As you know you buy someone there, and no guarantee of the product, also the money refund is impossible. And you can not cancel the order. So I decide use my paypal to buy the Dell inspiron E1505 battery.

I searched the Inspiron E1505 Battery in google and found search resault. Then I click some of them, after long time comparison I order a battery from http://www.discount-laptopbattery.com as Its price and 30 days money back and one year quality warranty. After 7days I recevied the battery and below is my battery using experience:

I was getting three red flashes and one green flash continuously on the battery light on the lower right side of the lid which according to the manual means defective battery which turned out to be true. I trashed the cheap Latitude D820 Battery (which I noticed was rated at 5200 ma vs the rating of 7200 on the Amazon battery)because I did not save the receipt. I am thrilled with this battery which is giving me about 3 hours before needing a charge, and charges to 100% overnight with no problem.

It works well with my 1505. I got 4 + hours out of this per charge. Saw some other people having problem with recognizing the batteries. When I was doing research for purchasing a replacement Latitude D620 Battery, I came across a lot of discussions online about Dell laptop not recognizing batteries. I wonder if that is a common issue with Dell. Luckily, mine has no problem. :) Everything is good. As long as it can last 1 year or so, It would be worth the money spent.

Owned for 5+ months. I am pleased with this Latitude D830 Battery I was glad to find it at a price much lower than Dell was selling it. It was a great buy. Product came right when I needed it and has worked great for me! Good battery life.

In all The battery is compatible and works well with the Vostro 1000. Instructions are confusing. I simply installed and followed good battery practices - completely charged the battery, completely drained the battery, then repeated.

In the end I saw some New batteries in this online shopping are in 35% price discount as the Merry Christams Day coming. I list them below with the brands:

Apple : A1008 Apple A1061 Apple A1148 Apple A1057 Apple iBook G4 12 inch battery Apple iBook G4 14 inch battery

Dell: Dell D5318 Dell 75uyf Dell C1295 Dell U4873 Dell Y9943 Dell G5266 Dell PC764 Dell GW240 Dell hd438 Dell KD186 Dell Y9943 Dell RN873 Dell TC030 Dell Inspiron 1721 Battery Inspiron 1521 Battery Dell Inspiron 1526 Battery Dell Latitude D520 Battery Dell Latitude D430 Battery Dell Latitude D810 Battery Dell XPS M140 Battery

HP & compaq: Pavilion DV5000 Battery HP Pavilion dv8000 Battery HP HSTNN-IB17 HP HSTNN-LB31 HP BP994A Compaq EVO N400c Battery Compaq EVO N410c Battery Compaq EVO N400 Battery Compaq EVO N410 Battery Compaq Evo N600 Battery Compaq Evo N600C Battery Compaq Evo N620C Battery Compaq Evo N610C Battery

IBM: IBM ThinkPad R61 Battery IBM ThinkPad T61 Battery IBM Thinkpad X61 Battery IBM Thinkpad X61S Battery LENOVO 40y6795 Lenovo 40y6797 IBM 40Y7003 IBM 40Y7001

Sony: PCGA-BP2EA VGP-BPS3A VGP-BPS4A Sony VGP-BPS8 VGP-BPS9 VGP-BPS9/B Sony VGP-BPS9A Sony VGP-BPS9A/B

In the end I hope you can find the best battery there as me.

How to Calibrate laptop battery

After using for months, the battery get weak and cant fully discharge. Also in this situation the laptop battery's 76% even less in work.Now we need to Calibrate laptop battery. I found a note about recondition laptop battery from Dell laptop battery manufacturers handbook. Surprisingly, it offered some really helpful laptop battery calibration and maintenance tips, which Id like to share with you:

Calibrating a Battery Pack

When to Calibrate laptop battery
Even if a battery pack is heavily used, it should not be necessary to calibrate it more than once a month. It is not necessary to calibrate a new Dell GK479 pack before first use. However, make sure that the battery pack is fully charged, especially if it is the only power source.

Calibrate Dell 1721 Battery ack under the following conditions:
? When the battery status display seems inaccurate.
? When you observe a significant change in normal batteryrun time.
? When the battery pack has not been used for one monthor more.

How to Calibrate laptop battery
To Calibrate Inspiron 1501 Battery pack, you must fully charge, fully discharge, and then fully recharge the battery pack.

Charging the Battery Pack

Fully charge the Sony VGP-BPS8 battery pack when the notebook is in use. To charge the battery pack:
1. Insert the battery pack into the notebook.
2. Connect the notebook to external power through an AC adapter. (The battery light turns on.)
The battery light turns off when the battery pack is fully charged.

Discharging the Battery Pack

Disabling Hibernation
To fully discharge the battery pack, disable Hibernation temporarily.
To disable Hibernation:
? Select the Power Meter icon on the taskbar or access Power Options > Hibernate, and clear the Enable Hibernate support check box.

Discharging the battery Pack
After the battery light turns off, which indicates that the battery pack is fully charged, begin discharging the VGP-BPS8 VGP-BPS9 pack.

To fully discharge the Sony battery pack:
1. Select the Power Meter icon on the taskbar, or select Start > Control Panel > Performance and Maintenance > Power Options > Power Schemes.
2. Write down the 3 settings in the Plugged In column and the settings in the Running on Batteries column, so you can reset them after calibration.
3. Select the drop-down lists and set all 6 options in both columns to Never.
4. Select the OK button.
5. Disconnect the notebook from the external power source, but do not turn off the notebook.
6. Run the notebook on battery power until the battery pack is fully discharged. The battery light begins to blink when the battery pack has discharged to a low-battery condition. When the battery pack is fully discharged, the power/Standby light turns off and the notebook shuts down.

Recharging the Toshiba laptop Battery Pack
1. Connect the notebook to external power and keep the notebook connected until the battery pack is fully recharged and the battery light turns off. ?You can use the notebook while the battery pack is recharging, but the battery pack will charge faster if the notebook is turned off.
2. Select the Power Meter icon on the taskbar or select Start > Control Panel > Performance and Maintenance > PowerOptions > Power Schemes.
3. Reenter the 3 settings you wrote down for the 3 options in the Plugged In column and for the 3 options in the Running on Batteries column.
4. Select the OK button.

Now you already Calibrate laptop battery

The article Via  Tblog  Zoomblog