Hi-Power Lithium Polymer Battery (Polymer Li-Ion) is made by special electrolyze which allow polymer battery drain at > 5C rate without over-heated and damaged. We Use the highest quality hi-power Li-Polymer packs for RC Car, RC air. Airsoft and E-bike at the most competitive price.  The customized battery pack is our strength.  We can help customers design/assembly a special battery pack usually within 1 week.