Description: Capacity: 3600mAh;Voltage: 7.7V;Number of cells: 6;Cells technology: Li-Poly;Warranty: 12 months;Cells manufacturer: Green Cell;Colour: Black;Overdischarge protection: Yes;Overcharge protection: Yes;The possibility of return: Up to 30 days;Product code: HP182;Manufacturer: Green Cell ;Compatibility list: ;Compatible with following battery models : 921408-2C1,921438-855,AB06XL,HSTNN-DB8C,TPN-I128 ;Compatible with following devices : HP Envy 13,HP Envy 13T