iRobot Roomba Battery for Select 500, 600, and 700 Series
Do the grime and markings on the battery terminals mean it's probably time to replace it or do they just need cleaning? Roomba is currently not taking a charge. Older Roomba 780. :
Battery for Irobot ROOMBA 780,replacement Irobot ROOMBA 780 battery for Vacuum Cleaner from Singapore(4500mAh,12 cells)
iRobot Roomba Xlife Battery - Australia Robotic
Source For iRobot Roomba R3 500 600 700 800 900 Series 530 531 532 535 536 540 just battery 4500mAh 14.4V Replacement Battery on m.alibaba.com
MIGHTY MAX BATTERY 14.4V BATTERY for iRobot Roomba R3 500 600 700 760 780 APS MAX3471813 - The Home Depot
Amazon.com: Battery Replacement for iRobot 11702,GD-Roomba-500,VAC-500NMH-33 Roomba 650,Roomba 660,Roomba 700,Roomba 760,Roomba 770,Roomba 780,Roomba 790,Roomba 800 : Home & Kitchen