Power Specification:Power Supply with Input 100-240V- 50/60Hz; Cable Length 4ft/1.2m with 5.5mm Plug. Safety Provide: This power supply ensures safe use with over voltage, over current, and over temperature protection. 8.4V Charger,1A Power Adapter Li-ion Battery Charger Cord with LED Indicator 2.1x5.5mm Interface Suitable for 7.2V 7.4V 8.4V 2-String Lithium Battery Pack