Kircuit 2-Prong AC/DC Adapter Compatible with Seauto SAT20 SAT-20 18.5V 7800mAh Li-ion Battery 180W Cordless Robotic Swimming Vacuum Wall-Climbing Automatic Pool Spa Cleaner Power Supply Cord Charger

• (Note: !!! 18.5V is Pool Cleaner's battery voltage. !!! NOT charger's voltage. Please Check For Compatibility With Your Unit. Thanks.) Tested Units. In Great Working Condition. Kircuit New Global 2-Prong AC / DC Adapter Compatible with Seauto Model SAT20 SAT-20 18.5V 7800mAh 144.3Wh DC18.5V 7.8Ah 144.3 Watt 18.5 Volt 7800 mAh 18.5 Volts 7.8 Ah 18.5VDC Lithium ion Li-ion Liion Rechargeable Battery Pack 180W Powerful Suction Cordless Robotic Swimming Vacuum Wall-Climbing Automatic Pool Spa Cleaner 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