Tenergy 11.1V 450mAh 35C LiPO Battery Pack for RC Airplanes (Edge 540QQ aerobatic plane) Capable of maximum continuous discharge rates up to 35C Specially designed for Edge 540QQ aerobatic plane (EFL6250) Equipped with JST connector on main power leads Perfectly small, yet powerful battery for your 1/2A size park flyers. 11.1V 450mAh high capacity Lithium-Polymer battery pack