Zippy Compact 4000mAh 2S 25C Lipo Pack Capacity: 4000mAh Voltage: 2S1P / 2 Cell / 7.4V Discharge:25C Constant / 35C Burst Weight: 197g (including wire, plug & case) Dimensions: 145x14x43mm Discharge Plug: XT60 Balance Plug: JST-XH