Kircuit 2-Prong AC/DC Adapter Compatible with Hydrus Seauto Shark SE SharkSE 21.9V 10.4Ah Li-ion Battery SAT-4P6S Cordless Automatic Robotic Swimming Pool Vacuum Cleaner Power Supply Cord Charger PSU

• (Note: !!! 21.9V is Pool Cleaner's battery voltage. !!! NOT charger's voltage. Please Check For Compatibility With Your Unit. Thanks.) Kircuit New Global 2-Prong AC / DC Adapter Compatible with Hydrus Seauto Shark SE Shark-SE SharkSE 21.9V 10400mAh 227.76Wh DC21.9V 10.4Ah Lithium ion Li-ion Liion Rechargeable Battery Pack Model SAT-4P6S SAT4P6S Cordless Automatic Robotic Swimming Pool Spa Vacuum Cleaner Class 2 Switching Power Supply Cord Cable PS Charger Mains PSU (w/ 2-pin Connector) !!!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: B0C3GNDDQG -- Shark Cordless Robotic Pool Vacuum Cleaner Waterline Cleaning, Wall-Climbing, Intelligent Route Planning (Multi) 100% Brand New, High Quality AC/DC Power Charger Build in Dynamic IC, Charger IC & Power fuse for rapid charging and over charge protection.