Circle of death? He'll occasionally say “error 18” but he literally just goes around in circles. I've tried cleaning the whole roomba, bumper and nothing seems to help. Any suggestions? : r/roomba
2600/3400mAh Battery ABL-D1 for IRobot Roomba i3,i4,i7/+,i8/+,7150,e5150,e5152,e5158,e6198,i7158,i7550,i7558,i31502F,i8550 - AliExpress
Reassembly of the XIAOMI MIJIA Vacume after ERROR 18 - FIXED - YouTube