Amazon.com - Roomba 500 / 600 / 700 / 800 / 900 Series Right and Left Drive Wheel module pair
Resistance in right wheel/"error 5" - Roomba - iFixit
iRobot® Roomba® j7+ (7550) Self-Emptying Robot Vacuum – Identifies and avoids obstacles like pet waste & cords, Empties itself for 60 days, Smart Mapping, Works with Google, Ideal for Pet Hair - Walmart.com
Roomba® j Series: Error 5
Fix: Roomba Charging Error 5 (Charging System isn't Working Correctly) - Appuals.com
Roomba Error 5: What is it and How to Fix it? - Decor Ideas
Error 5 possible water damage - iRobot Roomba 770 - iFixit
Easy solution to fix a charging error 1 on Roomba 685 - SOLVED! - YouTube