Each cell can contain a certain amount of potential energy, based on it’s size. Basically, it has a certain number of electrons contained in the package that can be used to power something. read more
A 9-cell battery may feel uncomfortably bulky on a smaller laptop.Your battery's longevity depends on your computer's hardware and how you use the computer. For example, a 6-cell battery may last three to four hours on a small 10-inch netbook. On a 17-inch gaming laptop, it might last only half that time. read more