sea jump 2 X 7.4V 2700mAh 10C Lipo Battery Replacement with 2in1 Battery Charger for Hubsan X4 H501S H501C H501A H501M H501S W H501S pro FPV Quadcopter to Increase The Flight time(40mins) :
Amazon.com: Set of 3 Genuine Hubsan 3.7V, 380mAh Rechargeable LiPo Batteries for Hubsan X4 H107C, DFD F180, F180C RC Quadcopter Drone : Toys & Games
10pcs 1S Lipo Battery Balance Charger Cable XH Plug 2.0mm Pitch for Syma X5C / Hubsan X4 Drones - 5PCS MALE & 5PCS FEMALE - Drone Garage Club
Powerextra 5pcs 3.7V 350mAh Lipo Battery for Hubsan | Ubuy India