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iRobot Roomba Series 500, 600, 700, 800, and R3 Battery
2600/3400mah Battery Abl-d1 For Irobot Roomba I3,i4,i7/+,i8/+,7150,e5150,e5152,e5158,e6198,i7158,i7550,i7558,i31502f,i8550 - Digital Batteries - AliExpress
Nastima Li ion battery 5000mAh for irobot roomba vacuum 500 600 700 800 series 550 560 585 620 631 650 671 675 760 770 780 880|Replacement Batteries| - AliExpress