Key Features Capable of maximum continuous discharge rates up to 30C Equipped with balancing leads and a connector that are compatible with most balancers and balancing chargers Equipped with JST connector on main power leads Perfect battery for small indoor 3D aerobatic sport or scale airplanes using Park 300 and Park 370 motors on 3S applications. Overview E-flite High-Power Series Lithium Polymer Batteries offer an excellent blend of weight power and performance. Available in a wide variety of capacities and voltages there's a battery perfect for almost any application from indoor slow flyer to large-scale sport and aerobatic airplane models as well as micro to mid-sized helicopter models.