Fix: Roomba Charging Error 5 (Charging System isn't Working Correctly)
Amazon.com: Neutop Replacement Parts Accessories Compatible with iRobot Roomba 500 Series 555 560 561 562 570 581 and Other Models with Green or Red Cleaning Head. : Home & Kitchen
iRobot Roomba Power Charger for 500, 600 and 700 Series
Roomba Repair Attempt, Error 5 and other weird things - YouTube