Amazon.com: NASTIMA 14.8V 5000mAh Lithium ion Replacement Battery Compatible with iRobot Roomba 960/895/890/860/695/680/690/675/640/614, Replace The Original 1800mAh Lithium ion Battery : Home & Kitchen
Battery f. iRobot Roomba 866
14.8V 4.4Ah Li-ion Replacement Battery for iRobot Roomba – Melasta
iRobot Roomba Series 500, 600, 700, 800, and R3 Battery
Amazon.com: for iRobot Roomba e e5 e6 e5150 e5152 e6198 and i i3 3150 i3+ 3550 i4 4150 i4+ 4552 i6 I7 i7158 i7+ 7150 7550 i8 Plus Replacement Lithium Ion Battery
Amazon.com: Lcenerga for iRobot Roomba Replacement Parts Roomba 1800Li Lithium Ion Battery - Compatible with Roomba 960 895 890 860 695 680 690 675 640 614 Series 14.4V 26Wh 1800mAh : Home & Kitchen