TATTU 14.8V 6750mAh 25C 4S LiPo Battery Pack with XT90 Plug for Elite Storm RC X5 550 Size RTF Quadcopter UAV Drone Tattu Professional LiPo Battery; Superior Japan and Korea Lithium Polymer raw materials Quickly Recharged, long cycle life (150 times minimum), up to 200Wh/kg energy density Dimension(L*W*H): 137*42*45mm, Weight: 600g, Connector: XT90 Plug Applications: Designed for Elite and all other uav in size 550 What you get: Tattu LiPo Battery Pack with XT90 Plug