(⚠️w/ Barrel ✅ Round Plug. Someone may have bought it by mistake. Please Check For Compatibility With Your Unit. Thanks.) 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 New Global 42V AC / DC Adapter Charger Compatible with iSinwheel S Series Model S9 E9 E9T S9 Pro S9Pro S9 MAX S9MAX 36V 7.5Ah 10.4Ah DC36V 7500mAh 10400mAh 36 Volt 36 Volts 36VDC Lithium ion Li-Ion Battery Pack Model FY0634201500 Shenzhen Fuyuandian Power Co., Ltd 42.0V 1.5A +42V 1500mA DC42V 1.50A 42VDC 42 V 1500 mA 42 VDC 1.5 A Power Supply Cord Cable PS Charger Mains PSU (⚠️w/ Barrel ✅ Round Plug. 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 New Global 42V AC / DC Adapter Charger Compatible with iSinwheel S Series Model S9 E9 E9T S9 Pro S9Pro S9 MAX S9MAX 36V 7.5Ah 10.4Ah DC36V 7500mAh 10400mAh 36 Volt 36 Volts 36VDC Lithium ion Li-Ion Battery Pack Model FY0634201500 Shenzhen Fuyuandian Power Co., Ltd 42.0V 1.5A +42V 1500mA DC42V 1.50A 42VDC 42 V 1500 mA 42 VDC 1.5 A Power Supply Cord Cable PS Charger Mains PSU (⚠️w/ Barrel ✅ Round Plug. Please Check For Compatibility With Your Unit. Thanks.) CECCCROHS 100-240