Hipower Laptop Battery For Sony Vaio VGP-BPS13/S, VGP-BPS13A/S, VGN-CS100, VGN-CS200, VGN-CS300, VGN-FW200, VGN-FW300, VGN-FW400, VGN-FW500, VGN-NS100, VGN-NS200, VGN-NS300 Laptop Notebook Computers (Silver) Battery Cells: 6 Cells Output Voltage: 11.1V Capacity: 4400mAh; 48Wh