Replacement Panasonic Toughbook CF C1 CF-VZSU66U 5700mah BatteryBattery Type: Li-ion, Battery Volt: 7.4 V, Capacity: 5700mAh/43Wh, Battery Color: Black, Condition: 100% New, Warranty: 12 monthsCompatible Part Numbers:CF-VZSU66U Fits the Following Models:CF-C1, Toughbook CF-C1Panasonic Laptop Battery: