Total Micro Notebook Battery - 5100 mAh - Lithium Ion (Li-Ion) - 10.8 V DC - 1 PackApplication/Usage: NotebookBattery Rechargeable: YesBattery Size: Proprietary Battery SizeBattery Chemistry: Lithium Ion (Li-Ion)Battery Capacity: 5100 mAhOutput Voltage: 10.8 V DCCompatibility: pHP EliteBook and ProBookNotebooks:6440b6450b6930b6530b6535b6550b6730b6735b6500b6700b8440p8440wLimited Warranty: 1 Year