Customized 5200mAh 14V Rechargeable Lithium Battery for Irobot Roomba 500 600 700 Series 14V Lithium Ion Battery with CE /Un38.3/ IEC62133/MSDS - China Lithium Battery, LiFePO4 Battery | Made-in-China.com
iRobot Roomba 500 and 600 Series Vacuum Cleaner 80501 Replacement Battery - Walmart.com