Roomba Integrated Home Base Charger 500, 600, 700, 800, 900 Series 220v 240v 4415878 870 880 861 980 Power Cord + Charging Base Included! With Built In Power Adapter Inside of Base. Heavier to help prevent Roomba from pushing it around on the floor. Works with all 500/600/700/800/900 series Roombas. Works with the latest Roomba 900 series (980 etc). 100v-240v compatible. That means this will work worldwide!