Battery type: Li-Ion - no memory-effect Capacity: 650 mAh Voltage: 6.4 V Energy: 4.16 Wh Number of cells: 2 Weight: 46 g Cell configuration: 2S1P Dimensions (length x width x height): 5.4 x 3.2 x 1.7 cm Discharge rate: 15 C Connection plug: SM-4P Current-carrying capacity: 20C Short-time discharge current (burst discharge rate): 15 C .