eeTao 42V 1A Replacement Charger Compatible with Jetson Horizon 36V 4Ah Lithium-ion Li-ion Battery Pack Power Supply Cable Cord PSU 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 30-day return policy !!!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 AC/DC Adapter Charger Compatible with Jetson Horizon Electric Bike Kids' Dirt Bike 36V 4Ah Lithium-ion Battery E-bike Power Supply Cable Cord PSU Power Supply Cord Cable PS Wall Home Charger Mains PSU CECCCROHS 100-240