Advanced Power System (APS) Plus 3300 mAh NiMH Battery

Rechargeable 3300 mAh NiMH replacement battery pack for iRobot Roomba Roomba Model 4001.

iRobot Roomba Battery Advanced Power System (APS) Plus - Roomba Model 4001 keeps your iRobot Roomba running at peak performance.

Provides hundreds of cleaning cycles for your iRobot Roomba 4001.

Use the fast charger to charge this Advanced Power System (APS) Plus 3300 mAh Roomba battery in less than 3 hours (standard charger charges the battery in 7 hours).

* Maintaining clean brushes optimizes battery performance and life of your iRobot Roomba.