iRobot Roomba 534 user manual (English - 14 pages)
Amazon.com - Replacement Parts for iRobot Roomba 500 Series Roomba 555 560 561 562 570 581 Vacuum Cleaning Robots Other Models with Green or Red Cleaning Head.
Amazon.com: NASTIMA 14.4V 4400mAh Lithium ion Replacement Battery Compatible with iRobot Roomba 600 700 800 900 Series 614 615 675 680 690 694 760 780 790 805 880 890 895 960 980 985 : Home & Kitchen