Masione Replacement Battery 14.4v 3.5Ah for iRobot Roomba 400 Series 400 405 410 415 416 4100 4105 4110 4130 4150 4170 4220 4225 Brand New | Ni-MH | 14.4 Volts | 3500mAh | Yellow This battery can run your Roomba for about 70-90 minutes Keep your Roomba cleaning up all the cat hair, cat litter and whatever else was on the floor Easy to charge and connect APS battery compatible with all Roomba 400 series All batteries are passed strict quality assurance procedures such as CE, RoHS, UL, FCC certifications. (Notes: before charging this battery, please makes sure that you have fully discharge the battery at first, thanks!)