Battery type: Li-Ion - no memory-effect Capacity: 4200 mAh Voltage: 7.2 V Energy: 30.24 Wh Colour: silver-grey Number of cells: 4 Weight: 187 g Compatible with the following device models: Panasonic Lets Note AX2 Panasonic Toughbook CF-AX2 Panasonic Toughbook CF-AX3 To ensure compatibility, please check to see whether the battery you are currently using is listed below.