http://www.kingwellbattery.com/products/high-power-cell-3.htm

So called 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. Batteryspace designs / manufactures 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 in our Northern California facility and deliver a prototype pack within one week.