YKS 5 PCS 1S 3.7V 600mAh 25C RC Lipo Battery Pack for Syma X5C X5 X5SC Mini RC Quadcopter Parts Upgraded Rechargeable Li-Polymer 1S battery. Voltage: 3.7V; Capacity: 600mAh. Continuous discharge rate: 25C; Charging Time : About 30 min. Size : Approx. 43 x 23 x 8mm / 1.69 x 0.91 x 0.31in . Weight (1pcs): 17g / 0.60oz. Compatible with: Syma X5C / X5SW / X5C-1 / X5SC / X5SC-1 mini Quadcopter.