WayIn&reg; 2-in-1 USB Battery Charger & 2pcs 3.7v 520mAh LiPo Battery for Hubsan X4 Cam Plus H107D+ Plus FPV Quadcopter Spare Parts Compatible for Hubsan X4 H107D+ H107D Plus FPV Quadcopter 2pcs 3.7V 520mAh Lipo battery,guarantee more flight time,high drain lithium-polymer rechargable battery 2-in-1 USB Battery Charger,Charge 2 batteries at once,no more annoyed with charging,fully enjoy flying your quad. Two batteries on hand ensures longer flying time. More batteries,more fun.