ATC Laptop Battery for SONY VAIO VGN-FZ series, PN: VGP-BPL8, VGP-BPS8, VGP-BPL8A, VGP-BPS8A, VGP-BPS8B (Silver) Battery Type: li-ion Voltage: 11.1V Capacity: 5200mAh Components: 6 cells Product Type: Replacement battery