Robot vacuum won't charge? Diagnose it in 10 minutes
Charging contacts, dock placement, and isolation steps that tell you whether the problem is the dock, the cable, or the battery.
Your robot vacuum is probably fixable.
Most robot vacuum failures are small, cheap, and predictable: dirty charging contacts, a worn brush, a confused sensor, or a battery past its prime. These guides walk you through diagnosing the problem and fixing it with basic tools — no service center, no guesswork, no replacing the whole unit.
Latest guides
Why your robot vacuum spins in circles (and how to fix navigation errors)
Bumper sensors, wheel encoders, and cliff sensors — the usual suspects behind circular behavior and what to do about each.
Cliff sensor false triggers: cleaning and troubleshooting
Why dark rugs look like staircases to your robot, how to clean the sensors, and placement workarounds that actually help.
Brush and side-brush replacement: when and how
How to recognize worn brushes, the generic steps to swap them, and a maintenance cadence that keeps suction strong.
Robot vacuum battery replacement: signs, safety, and steps
How to tell the battery is dying, the safety precautions that matter, and a generic procedure for swapping it.