Kircuit 2-Prong AC/DC Adapter Compatible with HISION A7 Max-GY A7Max 21.9V 7800mAh Li-ion Battery SAT-3P6S 180W Swimming Robot Cleaner Cordless Robotic Automatic Pool Vacuum Power Supply Cord Charger

• 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. Kircuit New Global 2-Prong AC / DC Adapter Compatible with HISION Model A7 Max A7Max A7 MAX-GY A7MAXGY 21.9V 7800mAh 170.82Wh DC21.9V 7.8Ah 21.9 Volt 7800 mAh 21.9 Volts 7.8 Ah 21.9VDC Lithium ion Li-ion Liion Rechargeable Battery Pack SAT-3P6S SAT3P6S 180W Powerful Suction Swimming Robot Cleaner Cordless Robotic Automatic Pool Vacuum Class 2 Switching Power Supply Cord Cable PS Charger Mains PSU (w/ 2-pin Connector) (Note: !!! 21.9V is Pool Cleaner's battery voltage. !!! NOT charger's voltage. Please Check For Compatibility With Your Unit. Thanks.) !!!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. Compatible with listing item ASIN: B0D2DJZGRZ -- Pool Vacuum for Inground Pools: HISION Cordless Automatic Pool Cleaners Robotic for Swimming Pool Wall and Waterline Cleaning with 150 Mins Long Battery 180W Suction for Pools up to 2000 Sq.ft