ZIPPY Flightmax 5000mAh 11.1v 3S1P 3S 20C/30C Hardcase LiPo Battery Zippy Flightmax Brand Lithium Polymer (LiPo) Hardcase 3 Cell (3S1P) 11.1 volts 5000MAH 20C constant discharge rate (30C burst discharge rate) Discharge Plug: 4mm Bullet-Connector