Safety protection mechanism supported: OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection). Input Voltage: 100-240V 50-60Hz.Output Voltage: DC 42V 2A. Compatible with Hover-1 36V Highlander, Dynamo, Gambit, Helios, Alpha, Jive, Journey, Formula, Escape, Pioneer and Rally Electric Scooter. Note: 36V is battery's voltage. NOT charger's voltage. Charger's voltage is 42V.Please Check For Compatibility With Your Unit. Note: Rechargeable batteries don't last forever, the average battery last 1 to 3 years. If the battery is old/dead, it will not accept a charge. But not charger's problem. If you're not sure whether battery or charger is dead or not. You must have a volt meter in order to tell whether or not a charger is working. Focus on better products. We produce compatible charger adapter power cord. Acdctek 42V 2A AC/DC Adapter Charger Compatible with Hover-1 36V Highlander, Dynamo, Gambit, Helios, Alpha, Jive, Journey, Formula, Escape, Pioneer and Rally Electric Scooter Power Supply