Error 20
Neato
Battery pack or battery management fault
Neato robot shows 'Error 20: Internal battery error' or similar and refuses to charge or run.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Battery pack cell imbalance, Battery temperature sensor failure, Battery connector loose, Battery management circuitry fault on main board
How to Fix / Troubleshooting
Safety: Unplug the dock and power OFF the robot before opening any covers.
- Inspect battery connection: If accessible, open the battery compartment and ensure the battery connector is firmly seated. Do not short any contacts.
- Replace battery: Install a genuine or compatible Neato battery pack with the correct voltage and capacity.
- Charge fully: Place the robot on the dock and allow a full charge cycle before testing.
- If error persists: The battery management circuitry on the main PCB may be faulty and require professional repair.
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Repair Difficulty
Medium
3/5
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