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) :
HUBSAN ZINO MINI SE BATTERY #ZINOMIN-04
Amazon.com: 7.4V 2700mAh li-po Battery for Hubsan H501S H501A H501C RC Drone H501S-14 Battery H501S Battery 2 Pack with EC2 Plug Battery Parallel Cable : Toys & Games
Battery 11.4V 4.2Ah LiPo for Drone HUBSAN Zino H117S