Lenovo L17M6P52, L17C6P51 ,01AV497/498 LAPTOP BATTERY Battery Type: Rechargeable Lithium-Ion (Li-ion) Capacity: 99Wh Voltage: 11.25V / 11.4V Cell Count: 6-Cell Compatibility with ThinkPad P72 Series,ThinkPad P73 Series ,ThinkPad P72(20MBA006CD),ThinkPad P72(20MB0005GE) ThinkPad P72(20MB002UGE),ThinkPad P72(20MB/20MC),ThinkPad P72(20MBA004CD),ThinkPad P72(20MB000EGE) hinkPad P72,ThinkPad P72(20MB0000GE),ThinkPad P72(20MB000JGE) 6 Cell Laptop Battery