Battery type: Li-polymer Capacity: 240 mAh Voltage: 3.7 V Energy: 0.89 Wh Number of cells: 1 Weight: 5 g Compatible with the following device models: Mitel 6940 Mitel 6970 Mitel 6930 Mitel 6920 To ensure compatibility, please check to see whether the battery you are currently using is listed below. Replacement for: Mitel 50005711 Mitel 50006764 .