Robot mower starts but stops after a few minutes without any error code, often returning to the station early.

Safety first: Turn off the mower before opening the battery compartment.

• Observe runtime: Fully charge the mower, then time how long it mows before returning. Compare with the expected runtime in the AL-KO manual.
• Reduce load: Raise cutting height and mow more frequently to reduce current draw.
• Check station contacts: Clean the charging contacts on both mower and station to ensure efficient charging.
• Battery inspection: If the mower is several years old and runtime is less than half of original, replace the battery pack with an original AL-KO replacement.
• Station test: If a new battery still gives short runtime, have the charging station output checked by a technician.