UBatteries Compatible 49Whr Battery Replacement For Sony VGN-NW270F - 4400mAh, 6 Cell (Black) UBatteries Li-Ion Replacement Laptop Battery; Grade A Cell Type: 6 Cell Lithium-Ion | Voltage: 11.1V | Capacity: 4400mAh | Rating: 49Whr CE ROHS Certified One Year Warranty, 30 Days Return