(Note: 3.7V is Sweeper Pro's battery voltage. NOT charger's voltage. Please Check For Compatibility With Your Unit. Thanks.) Tested Units. In Great Working Condition. Kircuit New Global 5V AC / DC Adapter Compatible with Zippi Sweeper Pro SweeperPro Model SDJ-06X SDJ06X 3.7V 1500mAh 5.55Wh DC3.7V 1.5Ah 5.55 Wh 3.7 Volt 1500 mA 3.7 Volts 1.5 Ah 3.7VDC Lithium ion Li-ion Liion Battery Pack Rechargeable Tri-Brush Lightweight Powerful Cordless Floor Sweeper USB-C USB Type C USBC Charging Port DC5V 500mA 2.5W 5.0V 0.5A 2.50W 5VDC 5.0VDC 5 V 5.0 VDC Class 2 Switching Power Supply Cord Cable PS Wall Home Charger Mains 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) 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 Kircuit AC adapters are tested and designed to meet the power needs of your device. This adapter converts AC power into the DC power required by your device. This supply allows you to operate your device or charge its battery from electrical power outlets. Kircuit Adapters are a portable power source for when your on the go, at home or office. This adapter has been validated and tested to ensure it will work with your device.