XLife battery for iRobot Roomba series 600, 700, 800 (Original)
Batteria Robot di ricambio originale per iRobot Roomba 535 570 653 870 536 580 654 880 540 581 655 545 585 660 Roomba serie Pet|Batterie per cellulare| - AliExpress
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