5200mAh, 6 Cells ( Note: 10.8V and 11.1V are compatible, they are in common use.)

8800mAh, 12 Cells (Note: 10.8V and 11.1V are compatible, they are in common use.)

Note: This 8800mAh(12 cells) battery will extend out about 1 inch from the bottom of the laptop,but it can lasting longer than the 5200mAh(6 cells)battery.

Note: This 8800mAh(12 cells) battery will extend out about 1 inch from the bottom of the laptop,but it can lasting longer than the 5200mAh(6 cells)battery.