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 54.6V 2A AC/DC Adapter Charger Compatible with ENGWE Engine Pro 20 Inches 750W LTN-4816C LTN4816C 48V 16Ah 48VDC 48.0V 768Wh Li-ion Battery All Terrien Mountain City Cruiser Electric Bike 54.6VDC 2000mA DC54.6V 2.0A 54.6 Volt Power Supply Cable Cord 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 54.6V 2A AC/DC Adapter Charger Compatible with ENGWE Engine Pro 20 Inches 750W LTN-4816C LTN4816C 48V 16Ah 48VDC 48.0V 768Wh Li-ion Battery All Terrien Mountain City Cruiser Electric Bike 54.6VDC 2000mA DC54.6V 2.0A 54.6 Volt Power Supply Cable Cord PS Mains PSU CECCCROHS 100-240