Gens ace 7.4V 450mAh 2S LiPo Battery Pack 25C/50C with JST Plug for Emax Babyhawk RC Heli 250 Helicopter Small Airplane Micro FPV Racing Drone Quadcopter Gensace Professional LiPo Battery: Superior Japan and Korea Lithium Polymer raw materials Excellent Duration: Quickly Recharged, long cycle life (150 times minimum), up to 200Wh/kg energy density Parameter: Weight:28g; Dimension(L*W*H): 56*31*11mm; Connector: JST-SYP-2P Plug Applications: specially designed for Emax Babyhawk 250 helicopter, small airplane, and small FPVs, great for beginners and daily practice What you get: Gensace LiPo Battery Pack, User Manual