Why laptop Battery is use of Lithium

At present, laptop battery is the most prevailing one in the battery world. They are not only with light weight but with long life. There is slight memory effect of Li-ion battery. You can use it tens of thousand times. In addition, it won’t get overheated if you over charge it. Moreover, they are thinner comparatively. And that is why it can be popularly adopted in current laptop.

Besides the li-ion battery, there are Nickel-cadmium (NiCad) battery and Nickel Metal Hydride (NiMH) battery. They have their own advantages. For the NiCad battery, it is common in notebook  computers of the old type. You can see this type of battery in the older laptops. However, because of memory effect, the continued use of the batterywill increase the effect gradually. As time goes by, battery plate will produce bubbles. Thereby it reduces the capacity of the battery. The only way to solve this problem is to completely discharge the battery. Thus, this battery has a very conspicuous defect: explosion. That is really terrible. As to Nickel Metal Hydride (NiMH) batteries, it’s the trans-product between lithium battery and the Nickel-cadmium battery. Later, it’s replaced by the lithium battery. Just as this dell d610 battery, it’s made of lithium.

Many laptops equipped with lithium-ion battery claimed 5 hours laptop battery life. That is not the truth. Hard disk drives, other disk drive and LCD display consumes a lot of battery power. Even through a wireless connection to browse the Internet will consume  some battery power. Many notebook computers have installed the power management  software to extend battery power is low or to save energy.
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the article source: http://www.acerapple.info/why-laptop-battery-is-use-of-lithium/