Battery type: NiMH Capacity: 850 mAh Voltage: 2.4 V Energy: 2.04 Wh Number of cells: 2 Weight: 26 g Dimensions (length x width x height): 4.5 x 2.1 x 1.1 cm Compatible with the following device models: Siemens Gigaset AL110a Trio Siemens Gigaset AL110a Siemens Gigaset AL110a Duo To ensure compatibility, please check to see whether the battery you are currently using is listed below.