TURNIGY, the name synonymous with performance, reliability and innovation is excited to release a powerful new battery chemistry in the Turnigy Graphene! The Graphene Professional series is designed for professional UAV/RPA operators (unmanned Aerial Vehicle/Remotely Piloted Aircraft) and those that demand nothing less than the best. Graphene batteries are unlike anything you have seen or used before. Turnigy Graphene packs utilize carbon in the battery structure to form a single layer of graphene just 0.335nm thick, making that type of battery substrate the thinnest known to mankind. The graphene particles form a highly dense compound allowing electrons to flow with less resistance compared to traditional Lipoly battery technologies. The result is a battery capable of maintaining greater power output whilst remaining much cooler under load. Since heat and resistance are the natural enemy of batteries, Graphene chemistry has significantly reduced these problems and the result is an incredible boost in cycle life and performance. We have a full range of Graphene Professional battery packs and will be adding new sizes/configurations as they become available. Turnigy Graphene batteries are the new standard for serious professionals who require POWER ON DEMAND. Specs: Capacity: 4000mAh Voltage: 4S2P / 8 Cell / 14.8V Discharge: 15C Constant / 30C Burst Weight: 396g (including wire, plug & case) Dimensions: 108x35x54mm Balance Plug: JST-XH Discharge Plug: XT-60 Note: Graphene LiPo Batteries only require a standard Lipo battery charger.Turnigy