Combo: 5pcs of Tenergy 3.7V 500mAh LiPO Battery for Syma X5, X5C, X5SC, X5SW 2.4G 4CH RC Quad Copters Exact replacement for popular quadcopter models: Syma X5, Syma X5C, Syma X5SC, Syma X5SW 3.7V 500mAh More PUNCH and ROBUST performance due to its higher current output and power Battery Weight: 0.6 oz Battery Size: 41 x 25 x 7mm