Amazon.com: efluky 3500mAh Ni-MH Replacement Roomba Battery + Replacement Accessory Part Kit for iRobot Roomba 600 Series 600 610 614 620 625 630 635 640 645 650 655 660 665 670 680 690 - a Set of 11 : Home & Kitchen
Replacement Battery for Roomba 500 600 700 Series APS Battery 555 595 620 630 650 660 790" - Walmart.com
Amazon.com: THEMONG Buy New Extra Accessory for iRobot Roomba 675 655 645 Series Replacement Kit Parts Set Filter Side Brush Bristle Brush Flexible Brush Tires Front Caster Wheel : Home & Kitchen
How to Replace Roomba Battery (VERY EASY REPAIR) - YouTube