Battery type: Li-Ion - no memory-effect Capacity: 1500 mAh Voltage: 7.4 V Energy: 11.1 Wh Number of cells: 2 Weight: 98 g Dimensions (length x width x height): 69 x 37 x 19 mm Discharge rate: 15 C Connection plug: 5500-2P Balancer connector: XH 2.54 (3P) Compatible with the following device models: MJX T39 MJX F49 MJX T40 MJX F39 .