Description: Capacity: 6600 mAh Voltage: 10.8V (11.1V) Number of cells: 9 Cells technology: Li-Ion Warranty: 12 months Cells manufacturer: Green Cell Overheat protection: Yes Colour: Black Overdischarge protection: Yes Overcharge protection: Yes Product code: HP06V2 Manufacturer: Green Cell Compatibility list: Compatible with following battery models : TD09 Compatible with following devices : HP EliteBook 6930p 8440p 8440w Compaq 6450b 6545b 6530b 6540b 6555b 6730b ProBook 6550b