Battery type: Li-Ion - no memory-effect Capacity: 2040 mAh Voltage: 3.7 V Energy: 7.54 Wh Number of cells: 1 Dimensions (L x W x H): 5 x 1.8 x 1.8 cm Weight: 35 g Compatible with the following device models: Philips Norelco AT890 Philips Norelco AT891 Philips Norelco HQ7390 Philips Norelco HQ8100 Philips Norelco AT893 Philips Norelco AT895 To ensure compatibility, please check to see whether the battery you are currently using is listed below.