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