World Wide Input Voltage 100-240VAC 50/60Hz. OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection). Tested Units. In Great Working Condition. eeTao 30 days Refund. 24 Months Exchange. eeTao 42V 1.5A AC/DC Adapter Charger Compatible with ‎‎Wheelspeed ‎Primer WS-Primer WS1 36V 5.2Ah 187.2Wh Lithium-ion Li-ion Liion Battery Pack HLT-180-4201500 HLT1804201500 42VDC 1500mA DC42V 42.0V 42 Volt Class 2 Power Supply Cord Cable PS Mains PSU Compatible with: HLT-180-4201500 HLT1804201500 HLT-180-4202000 HLT-180-4202000 42V 1.5A 2A Power Supply (Note: ⚠️!!! 36V is battery's voltage. ⚠️!!! NOT charger's voltage. Please Check For Compatibility With Your Unit. Thanks.) ⚠️!!!Tips: 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. eeTao 42V 1.5A AC/DC Adapter Charger Compatible with ‎‎Wheelspeed ‎Primer WS-Primer WS1 36V 5.2Ah 187.2Wh Lithium-ion Li-ion Liion Battery Pack HLT-180-4201500 HLT1804201500 42VDC 1500mA DC42V 42.0V 42 Volt Class 2 Power Supply Cord Cable PS Mains PSU CECCCROHS 100-240