Kircuit 2-Prong AC/DC Adapter Compatible with Osprey 1000 WY3165 Osprey1000 25.9V 7800mAh Li-ion Battery Cordless Robotic Automatic Swimming Pool Vacuum Floor Cleaner Power Supply Cord Charger

Input Voltage: AC 100-240V, 50/60Hz.Great for replacement or travel back up New Global 2-Prong AC / DC Adapter Compatible with Model Osprey 1000 WY3165 Osprey1000 25.9V 7800mAh DC25.9V 7.8Ah 25.9 Volt 7800 mAh 25.9 Volts 7.8 Ah 25.9VDC Lithium ion Li-ion Liion Rechargeable Battery Pack Cordless Robotic Automatic Swimming Pool Vacuum Floor 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. Package includes :1 X AC adapter and 1 X Power Cord Over current protection; Total power protection; Over voltage protection; Short Circuit Protection. Tested Units. In Great Working Condition.