Laptop batteries can often be expensive because the laptop manufacturer is the only one who makes a battery to fit their particular laptop. This is done so the manufacturer will have control of the market when you need a new battery. Often this is done to encourage you to buy a new laptop instead of replacing the battery. In many cases there is little difference in the price, which is what the manufacturer intended.
Some laptop batteries, such as the Ni-Cad, will suffer from a problem which is commonly called the memory effect. This is caused when you continually recharge the battery without letting it discharge entirely. After a time the battery will forget that it has unused capacity and it will discharge much faster each time it is used. The best way to avoid this laptops batteries problem is to allow your battery to completely discharge at least once each month. This allows the battery to retain its original memory and provides longer usage.
When your laptop is not in use for an extended period of time it is best to remove the battery. The battery will continue to slowly discharge during the time it is not in use. If this discharge takes place inside the laptop you may not be able to get your laptop to recognize the battery the next time it is recharged.
You can also experience battery problems if you allow your battery to completely discharge outside the laptop. You should check the battery while it in storage so it will not be allowed to completely discharge. This could also prevent the laptop from accepting the battery when you place it back into the computer.
If your laptop batteries become hot to the touch you will need to remove the battery and allow it to cool off. If this problem continues when you replace the battery in the laptop, you will probably have a defective battery. It is best to remove the battery and replace it since a defective battery could cause extensive damage to the laptop.
Temperatures have an effect on laptops batteries. If you are experiencing extremely hot temperatures you will need to keep the battery in as cool an area as possible. Extreme heat can cause the battery to discharge prematurely and can eventually lead to battery damage.
Last year Toshiba recalled about 430,000 laptop batteries because they continued to lose power prematurely. Toshiba also reports that although these batteries were giving problems by losing power, there were no reports of the batteries overheating and there were no reported injuries as a result of the defective batteries.
Before the Toshiba recall, Dell and Apple had a battery recall because Sony had produced a defective batch of batteries. These batteries were known to overheat and some of them even produced fires. All of these batteries were replaced free of charge but the company did suffer some financial damage as a result of the recall.
Panasonic also had a laptop battery recall because the latches were defective. This was causing a mechanical problem with the batteries because they were not properly latched in. In many cases these batteries overheated but there were not reported injuries.