Battery Li-Po 7.4V for the car in a hard case.Specification:Number of cans: 2Voltage: 7.4 VCapacity: 3250 mAhRecommended charging current: 1C (C: capacity of the battery)Maximum operating current discharge: 25C (50C to briefly) (C: capacity of the battery)Includes:one Li-Pol battery 3250 mAh 7.4V, 25C.