Battery type: NiMH Capacity: 2000 mAh Voltage: 1.2 V Energy: 2.4 Wh Number of cells: 1 Short circuit, overcharge and overheating protection Dimensions (L x W x H): 6.3 x 1.4 x 1.4 cm Weight: 27 g Compatible with the following device models: Panasonic ES-RT31 Panasonic ES-RT30 Panasonic ES-RT53 Panasonic ES-RT40 Panasonic ES-RT33 Panasonic ES-RT51 To ensure compatibility, please check to see whether the battery you are currently using is listed below.