Amazon.com: 4000mAh / 57.60Wh Li-ion Replacement Battery for iRobot Roomba 670, Roomba 671, Roomba 675, Roomba 677, Roomba 680 Part NO iRobot 2130LI, 4374392, 4376392, 4462425, 4502233 : Home & Kitchen
Amazon.com: for iRobot Replacement Parts Roomba 1800LI Lithium Ion Battery Compatible with Roomba 960/895/890/860/695/680/690/675/640/614 4376392 Series 4INR 19/65 14.4V 1800mAh/26Wh (1800mah) : Home & Kitchen
26Wh 1800LI Replacement Part Vacuum Battery for iRobot Roomba 985/980/960/600/800 Series Robots 614/615/640/652/665/670/671/675/677/680/685/690/695/801/805/850/860/877/890/891/895 14.4V 1800mAh Li-ion - Walmart.com
for iRobot Replacement Parts Roomba 1800LI Lithium Ion Battery Compatible with Roomba 960 895 890 860 695 680 690 675 640 614 Series 4376392 14.4V 26Wh 1800mAh - Newegg.com
Cameron Sino 4000mah Battery For Irobot Roomba 614,615,640,652,665,670,671,675,677,680,681,685,690,691,695,696,801,805,850,860 - Digital Batteries - AliExpress