Advanced Power System (APS) Plus 3300 mAh NiMH Battery

Rechargeable 3300 mAh NiMH replacement battery pack for iRobot Roomba 551 series.

iRobot Roomba Battery Advanced Power System (APS) Plus - 551 Series keeps your iRobot Roomba running at peak performance.

Provides hundreds of cleaning cycles for your iRobot Roomba 551.

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).

iRobot Roomba Battery Advanced Power System (APS) Plus - 551 Series is also compatible with all Roomba 551 series, 600 series, 700 series, 800 series and Professional and Pet series vacuum cleaning robots.

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