BATTERY CHARGER FOR IROBOT ROOMBA 4130 4150 4170 4188 APS AC ADAPTER POWER CORD AC Input 100V-240V 50-60Hz;DC Output 22.5V 1.25A Industry Quality : Over Voltage Protection, Over Heat Protection Brand New and High Quality, 100% Compatible Warranty:1 year warranty, 30 day money back guarantee Shipping from USA !