Battery type: Li-polymer Capacity: 850 mAh Voltage: 7.4 V Energy: 6.29 Wh Number of cells: 2 Weight: 40 g Cell configuration: 2S1P Dimensions (length x width x height): 5.4 x 2.9 x 1.75 cm Discharge rate: 15 C Connection plug: BEC Balancer connector: XH 2.54 (3P) Current-carrying capacity: 25C Short-time discharge current (burst discharge rate): 25 C Height: 17.5 mm Diameter: 29 mm .