PowerMall 11.1v 2700mah 30c Rc Helicopter Drone Spare Battery Quadcopter High Capacity Lipo Battery for Cheerson Cx-20(chengxing Cx-20),V303 with XT60 Connector 11.1V 2700mAh LiPO Battery XT60 Connector The battery explosive strong enough and it has long duration flight time than the original one. Suitable for Item No.: Weili V303,Cheerson CX-20