3.7V 400mah battery for JJRC H31 - Maison Du Drone
Jjrc Original Battery Jjrc H31 Spare Parts 3.7v 400mah 30c Battery H31 Lipo Battery 3.7 V 400ma For Jjrc H31 With Xh2.54 Plug - Parts & Accs - AliExpress
4pcs Original JJRC 3.7V 400mAh 30C Lipo Battery with 4 in 1 Battery Charger for JJRC H31 GoolRC T6 RC Quadcopter