Input: 100-240V 50/60Hz 1.5A(max); Output: 42V 2A. Only for 36V Li-ion battery pack. Don’t use it for Lead Acid battery pack. compatible with most brands of 36V Lithium Battery electric equipment, for example compatible with Xiaomi,Jetson,Razor,Swagtron,Bird,Gotrax,Segway and so on. The charger comes with 5 different connectors 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. Indication 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. The universal power adapter has been tested and confirmed provide overvoltage protection, overcurrent protection, short circuit protection, temperature protection to ensure safe and available. If you are not satisfied with Our Charger, please send us an email at any time, and we are willing to send you back. If you have any questions, contact us, we will reply you within 24 hours. 1