【Charger Specifications】:Input: 100-240V 50/60Hz ; Output: 54.6V 2A. PLEASE NOTE: 1.Only for the Device that has a 48V 13S Li-ion battery pack.(NOT for 24V 25V 29.4V 36V 42V or other !) 2.Don’t use it for Lead Acid battery pack! 【Universal 7 Plugs Charger】:This battary charger comes with 7 types of plugs for true versatility: 5.5x2.1mm 1-prong DC plug +6 converters(5.5x2.5mm 1-prong DC plug, 9.0mm/0.35in Mini 3-Prong Connector, 12.0mm/0.47in Standard 3-Prong Connector, 8mm RCA and 3-Pin Male XLR Connector, Universal IEC plug. Suitable for most 48V 13S Lithium Battery Devicet. 【Safe and Reliable】:The universal power adapter has been tested and confirmed provide overvoltage protection, overcurrent protection, short circuit protection, temperature protection to ensure safe and available. 【Indicator Light】:Red light when charging, green light when fully charged. Fast charge with high current. Just plug in and it will maintain the battery automatically. 【Great Service】The 54.6V 2000mA battery charger is made with high quality materials and sold under strict quality control. Please rest assured to purchase. Please contact with us if you have any qustions about our charger replacement, we will provide you refund or other satisfactory solution! 54.6V 2A Battary Charger with 7 Plugs for 13S 48V Lithium Battery Only Special reminder:The product is compatible with most brand of electric equipment with a Lithium Battery in the market, but cannot achieve 100% compatibility. So --**Please Carefully Check the Voltage and Connector Size Before Order** SPECIFICATION: Color: Black Input: AC 100 ~ 240V, 50/ 60Hz, US Plug Output: DC 54.6V 2A Smart LED Indicator: red light means charging. Green light means battery full charged, At this time, you can disconnect the charger and use the your device. How To Find Out If This Product Is Suitable For Your Device？ 1) Determine whether it is a lithium battery (our products are used for lithium batteries) 2) Check whether the required parameters are consistent,it is very important! 3) Check which interface your device has,and compare with our charger by picture. THE CHARGER DOES NOT WORK FOR POSSIBLE REASONS： 1.If you plugged in, the green light is on but not turn into red, it is possible that the device is not successfully connected. Please confirm that the device is fully plugged in. 2.If there was a green light when the power was plugged in. After connecting the your device, the light went out, it is because the internal short circuit of your device, which causes the charger self-protection function.you'd better check your device battery first. 3. If your device has been use or store for many month, Due to the limited life of lithium batteries, Your battery is broken. Please replace the battery. 4.The charger is not suitable for your device. This charger for 13S 48V Lithium Battery ONLY, NOT FOR 36V/42V, 29.4V or other batteries Tips: √ Don’t use when your battery is broken. √Please check whether your model, size, specification, parameters, etc. are consistent with our products before purchasing. √If you have any question with our Adapter, please feel free to contact us. We provide you with lifetime friendly customer support!