1,Replacement Battery for iRobot 400 series 2,High Quality High ... charge and connectReplacement rechargeable battery for iRobot Roomba 400 Series, Discovery Series and Original models.Compatible ... 4225 4105 410 4220 4100405 4210 4000 400*Battery is a generic replacement, not the original OEM battery.*iRobot ... free to contact us. Rechargeable battery for Replacement iRobot Roomba 400 Series Vacuum