Safety first: Disconnect the charging station from mains power before cleaning or inspection.

Verify mains power: Check that the wall outlet has power and that any extension cord or power strip is functioning. Confirm the charging station's power LED (if present) is lit.
Clean contacts: Wipe the charging contacts on both the mower and the station with a dry cloth. For stubborn oxidation, use a pencil eraser gently. Do not use water or abrasive tools.
Check alignment: Place the mower manually onto the station, ensuring the front or rear (depending on model) is fully engaged and the contacts touch firmly.
Inspect station cable: Follow the low‑voltage cable from the power supply to the station. Look for cuts, pinches, or chew marks (rodents). Replace damaged Charging Station Cable.
Test with another outlet: Try a different mains outlet to rule out supply issues. If E11 persists and the station LED is off, the Charging Station Power Board may be defective and require replacement.

Robot mower displays E11 and does not charge when docked on the charging station.

Possible Causes