Odec 14.4V 3500mAh Ni-MH Roomba Rechargeable Battery for iRobot Roomba 400 405 410 415 416 418 4000 4100 4105 4110 4130 4150 4170 4188 4210 4220 4225 4230 4232 4260 4296 Dirt Dog Discover Scheduler Replacement Battery for iRobot Roomba 400 405 410 415 416 418 4000 4100 4105 4110 4130 4150 4170 3500mAh high capacity, providing more power within one full charge Ni-MH eco-friendlybattery, no pollution to the environment CE and FCC certified, ensure the safety for the whole using process Over-charge and over-discharge protection