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. New AC / DC Adapter Compatible with WORKPRO Model W004532A Pink 20V 1500mAh DC20V 1.5Ah 20 Volt 1500 mAh 20 Volts 1.5 Ah 20VDC 20 V 20 VDC Li-Ion Liion Battery Cordless Drill Driver Model WJ-Y112150350W WJY112150350W 21.5V 0.35A 21.5VDC 350mA Power Supply Cord Cable PS Wall Home Charger Mains PSU !!!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. New AC / DC Adapter Compatible with WORKPRO Model W004532A Pink 20V 1500mAh DC20V 1.5Ah 20 Volt 1500 mAh 20 Volts 1.5 Ah 20VDC 20 V 20 VDC Lithium-Ion Li-Ion Liion Battery Cordless Drill Driver Model WJ-Y112150350W WJY112150350W 21.5V 0.35A 21.5VDC 350mA Power Supply Cord Cable PS Wall Home Charger Mains PSU CECCCROHS 100-240