Hyperion G3 Vx 4200 Mah 4S 14.8V 35C/65C Lithium Polymer Battery Battery Pack Dimensions: 136.3 mm x 43 mm x 36.45 mm Battery Pack Weight 449 g/15.84 oz. Specs At A Glance: Battery Voltage: 14.8 V; Battery Capacity: 4200 mah; Battery Dishcarge Wire Size: 10 awg; Battery Balance Connector: Yes ;Battery Discharge Wire Length: 120; Battery Discharge Connector: none Capable of charging at a maximum 5C Charge rate: 21 Amps; Max Continuous Discharge Rate: 147 Amps Suggested Accessories: Hyperion EOS 0606i DC Charger, Hyperion EOS 0606i AC/DC Charger, Hyperion EOS 0615 Duo Charger, or Hyperion EOS 0720i AC/DC Charger