(Note: !!! 14.4V is Vacuum's battery voltage. !!! NOT charger's voltage. ) New Global 2-Prong AC / DC Adapter Compatible with Aiper Model Scuba N1 ScubaN1 14.4V 7800mAh 112.32Wh DC14.4V 7.8Ah 14.4 Volt 7800 mAh 14.4 Volts 7.8 Ah 14.4VDC Lithium ion Li-ion Liion Rechargeable Battery Pack 75W Cordless Robotic Automatic Swimming Pool Vacuum Cleaner Class 2 Switching Power Supply Cord Cable PS Wall Home Charger Mains PSU (w/ 2-pin Connector) Compatible with: Model E044-1A168260HU E0441A168260HU GC42-168260-1A GC42-1682601A GC42168260-1A GC421682601A Class 2 Power Supply; !!!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. Tested Units. In Great Working Condition. Onerbl AC adapters are manufactured with the highest quality materials tested and designed to meet the power needs of your device. This power supply allows you to operate your device or charge its battery from electrical power outlets.This adapter converts AC power into the DC power required by your device. Onerbl adapters are great solution during travel.This adapter has been validated and tested to ensure it will work with your device.