One of the oldest batteries used in laptops is the NiCad, nothing but the Nickel Cadmium, which is very rarely used today. These Nickel Cadmium or the NiCad batteries is very heavier when compared to laptop batteries which are used to day. These NiCad batteries are prone to memory effect and they aren't environment friendly as it contains heavy metals. Now battery manufactures have stopped manufacturing batteries of this type. The Nickel Metal Hydride or NiMH batteries are less likely to be prone to memory effects, but produces better power when compared to NiCad batteries. However most companies have stopped manufacturing NiMH batteries also.
The Lithium Ion or Li-Ion batteries is the most commonly used batteries used today in Laptops and also in other digital gadgets as Lithium Ion or Li-Ion batteries are compatible, provides excellent power and lesser in weight. Li-Ion batteries are very much useful in smaller and lighter devices such as digital cameras
, mobile phones and of course in laptops. Another biggest advantage of Lithium Ion batteries is that they do not suffer memory effect at all! However these batteries tend to lose its charge quickly towards the end of their life span. If this happens, then this is an indication, that the battery needs to be replaced.
Laptop Battery Buying Guide
A laptop battery provides a source of electrical energy that supplies needed power to your laptop. The laptop battery uses a combination of cells that are electrochemically active, which is to say, they naturally transmit electrons from one end of the laptop battery to the other, when those two ends are connected in a circuit. A laptop computer battery can be engineered to be highly portable, like a watch battery, or it can be built to withstand extremes in operating conditions, like a car battery.
Just like your car, your laptop computer battery lasts longer depending on how you "drive" your laptop. Modern laptop batteries tend to last three to five hours, depending on the power needs of the computer and the programs the user runs. Few things are as frustrating as when your laptop battery suddenly won't charge fully or stops holding its charge for as long; when this happens, you'll probably want to buy a replacement battery.
When buying a laptop battery, you will probably only have one or two choices that fit your computer. Choose the battery with the longest life available for your computer. There are several different kinds of laptop batteries; because the technologies of each are very different, a laptop must be designed specifically for the type of battery it uses. Most laptops are only designed to use one type of battery technology.
