Amazon.com: Crazepony 2-in-1 USB Balance Charger Cable 1A with XH-3P Connector Plug for 2S 7.4V LiPo Battery RC Car Boat Rock Crawler FPV Drone Quadcopter : Toys & Games
2S 7.4V LiPo USB Battery Balance Charger for RC Quadcopter - YouTube
How to charge RC batteries
Amazon.com: Crazepony 2-in-1 USB Balance Charger Cable 1A with XH-3P Connector Plug for 2S 7.4V LiPo Battery RC Car Boat Rock Crawler FPV Drone Quadcopter : Toys & Games
2pcs USB Charger Cable 1A Crazepony for 2S 7.4V LiPo Battery RC Quadco – MakerFocus