Ryder develops many different Li-polymer packs for Airplane, Airsoft gun and Receiver.Built with the highest quality single cells,engineered and optimized specifically for RC planes and RC cars,unmatched energy and power density, increased flight time (about twice that of comparable NiMH packs),significantly decreased weight compared to NiMH or NiCd packs,smaller physical size to easily fit in your RC aircraft,deliver discharging current up to 30 times of its capacity(30C).