Teenitor 6-In-1 Max 2.5A Current Input Fast Battery Charger Specifications: Voltage Input: DC 5V; Max Current Input:2.5A Voltage output: 4.2V; Current output: 500mAh Compatible RC Quadcopter battery: Hubsan: H107 H107L H107C H107D. Wltoys: V202 V252 V939. UDI: U818 U816 U816A U830. JXD: 385 388 392. Syma: X5 X5C. FY: FY310 FY310B YIZHAN: X4. DFD: F180. JJRC: 1000A 1000B 5000. Package Includes: 1x 6-in-1 charger 1x USB Cable 6x Converting Cables This kind of charger can enable you to charge five batteries at the same time and make your rc helicopters have enough spare battery. So that you have more flight enjoy time. PS: Charging indicator red LED light indicates battery is charging.