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) UpBright New Global 26V AC/DC Adapter Compatible with Infinity PR Pro Endurance 12MG021131 Wireless Percussion Massage Device Deep Tissue Body Muscle Massager Gun 24V 1A 2400mAh DC24V 2.4Ah 24 Volt 2400 mAh 24 Volts 2.4 Ah 24VDC Li-ion Liion Battery Compatible with Infinity PR Pro Endurance 12MG021131 +26V DC26V 26.0V 26VDC 26.0VDC 26 V 26.0 VDC Class 2 Switching Power Supply Cord Cable Wall Home Battery Charger Mains PSU Note: Rechargeable batteries don't last forever, the average battery last 1 to 3 years. If the battery is old/bad, it will not accept a charge. But not charger's problem Tested Units. In Great Working Condition. UpBright 30 days Refund. 24 Months Exchange UpBright New Global 26V AC/DC Adapter Compatible with Infinity PR Pro Endurance 12MG021131 Wireless Percussion Massage Device Deep Tissue Body Muscle Massager Gun 24V 1A 2400mAh DC24V 2.4Ah 24 Volt 2400 mAh 24 Volts 2.4 Ah 24VDC Li-ion Liion Battery +26V DC26V 26.0V 26VDC 26.0VDC 26 V 26.0 VDC Class 2 Switching Power Supply Cord Cable Wall Home Battery Charger Mains PSU CECCCROHS 100-240