Battery type: Li-ion; Capacity: 5200mAh/58Wh Voltage: 11.1V; Cells: 6-cell. Compatible part numbers: VGP-BPS9/S VGP-BPL9 VGP-BPS9A/B VGP-BPS10 VGP-BPS9B VGP-BPS9/B PCG-8W1M BPS9A3