A notebook battery life comparison shows the range of hours a single charge will last depending on the brand and model of battery. Notebook batteries are available from low to high capacity. In general the higher the capacity the more you will pay for the battery. Another option is to have a battery backup installed which, combined with a high capacity notebook battery, will give you the maximum life expectancy.
In general a single notebook battery will last anywhere from two to eight hours on a full charge. The actual battery life is largely dependent upon the capacity of the battery and the type of applications or programs being run while relying on battery power. Adding a backup battery to your notebook will give you extended time to use the computer without having to plug in the AC adapter. Notebook batteries are usually good for at least 300 full charges and discharges.
When purchasing a new notebook computer direct from a