Dell inspiron battery usually use three power cells. These are the four cells, six-cell and 9 cell battery. 9 is the largest number of batteries to store energy. In general, four batteries can last for 1.5-2 hours, 6-cell lasts 2,5-3 hours and 9 cell lasts about 3.5-4 hours. Therefore, you must consider the average user, but especially for the cell power. According to Dell, the Inspiron laptop batteries life usually lasts 18 to 24 months. Dell laptop battery or dell battery is available in the market with 6-cells and 9-cells.