Battery type: Li-Ion - no memory-effect Capacity: 800 mAh Voltage: 14.8 V Energy: 11.84 Wh Number of cells: 4 Weight: 83 g Compatible with the following device models: Ecovacs W830 Ecovacs W830-RD Ecovacs W830S Ecovacs W836 Ecovacs W850 Ecovacs W855 Ecovacs W930 Ecovacs W950 To ensure compatibility, please check to see whether the battery you are currently using is listed below.