BestforU&reg; 6 In 1 USB 25C 3.7V 500mAh 600mAh Battery Charger for UDI U817A U818 U818A Hubsan X4 H107 H107L H107C H107D V252 JXD385,Syma X5 X5C X5A JJRC H5C RC Quadcopter WL V959 V931 V977 MJX X400 6 In 1 Battery Charger For UDI Hubsan Syma Quadcopter Charging 6 battery at one time, Over charge protection, Short circuit protection Compatible with 25C 3.7V 500mAh/600mAh Lipo battery Voltage input: DC 5V