Tenergy New Extended Life 1000 Cycles 14.4V 3850mAh NiMH Battery for iRobot Roomba 900 800 700 600 500 Series, Vacuum Rechargeable Replacement Batteries, Bonus 4 Side Brushes and 1 Brush Cleaning Tool

The Tenergy 3850mAh NiMH Battery is a game-changer for iRobot Roomba owners! With its high capacity and long run time, you'll get more cleaning per charge than ever before.

Plus, it's cost-efficient and built to last with up to 1000 recharge cycles.

And the best part? It's a direct replacement that requires no additional modifications or tools! Don't settle for anything less - upgrade to the Tenergy 3850mAh NiMH Battery today!