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it works for 500, 600 and 700 models
it comes with charger base dock,power adapter and plug
if your irobot is not charging on the base,you can try to clean the metal tabs on the irobot and dock station. Need wire brush or steel wool, then a dab of alcohol to wipe clean
Charger Base Dock Station with Power Adapter and Plug for iRobot 500 600 700 Series