5-in-1 Fast Battery Charger (Max Current 2.5A Input) for UDI U818A / Hubsan You will receive (1) 5-in-1 Fast Battery Charger (Max Current 2.5A Input) for UDI U818A / Hubsan, (5) converting cables and (1) USB cable Voltage input: DC 5V; Voltage output: 3.7V; Current output: 500 mAh Charges FIVE Quadcopter batteries at the same time for extended flight When the battery is charging, the lights on charger will be lit - when finished, it will automatically turn off Over charge protection and short circuit protection