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 3-Prong AC/DC Adapter Charger Compatible with Heybike Explore ‎Mars 26 inch 750W Motor 48V 20AH 48VDC 20 Ah DC48V Lithium-ion Li-ion Battery Pack Electric Bike E-Bike Power Supply Cord Cable PS Mains PSU (Note: ⚠️!!! 48V 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 3-Prong AC/DC Adapter Charger Compatible with Heybike Explore ‎Mars 26 inch 750W Motor 48V 20AH 48VDC 20 Ah DC48V Lithium-ion Li-ion Battery Pack Electric Bike E-Bike Power Supply Cord Cable PS Mains PSU CECCCROHS 100-240