Robot lawnmower starts but stops after a few minutes without any error code, then returns to the station.

Safety first: Turn OFF the mower and unplug the charging station before cleaning contacts or opening covers.

• Clean charging contacts: Use a dry cloth and fine abrasive pad to clean oxidation from the mower and station contacts. Ensure good metal-to-metal contact.
• Check charge time: Allow the mower to remain in the station for the full recommended charge time. Confirm that the charging indicator shows a full charge before starting.
• Inspect battery connector: Open the battery compartment and ensure the connector is tight. Look for signs of heat or discoloration, which indicate high resistance.
• Evaluate runtime: Compare current runtime to the original specification. If it is significantly shorter, replace the battery pack with an original Einhell unit.