Morpilot 14

4V X-Life Extended Battery w/ 2Pcs Brush - Compatible with Roomba 8 Series 886,880, 865,860,866,871,876 (Brush for Series 5 6 7) [2017 Upgraded]Higher Capacity 3800mAh, XLife Extended Life Time Battery for iRobot Roomba

Longer operating time and battery life

3800 mAH battery's 3200 mAH, Replac