Battery type: Li-Ion - no memory-effect Capacity: 600 mAh Voltage: 7.4 V Energy: 4.44 Wh Number of cells: 2 Weight: 49 g Cell configuration: 2S1P Dimensions (length x width x height): 4.0 x 3.8 x 2.1 cm Discharge rate: 15 C Connection plug: SM-2P Balancer connector: XH 2.54 (3P) Short-time discharge current (burst discharge rate): 15 C Compatible with the following device models: Syma Q3 Syma Q2 .