Robot vacuum starts but shuts off after a few minutes with a low runtime, even after a full charge.

Safety first: Turn the robot OFF before opening the battery compartment.

Step-by-step:

• Clean charging contacts: Wipe the robot and base contacts with a dry cloth to ensure efficient charging.
• Perform 2–3 full cycles: Fully charge the robot, then run it until it stops, and recharge fully again. This can recalibrate the battery gauge on some models.
• Inspect battery age: If the robot is over 2–3 years old and runtime has steadily decreased, the battery pack is likely worn out.
• Replace battery: Install a new, compatible Eufy Li-ion battery pack, ensuring correct connector orientation and secure seating.

When to stop: If a new battery does not improve runtime, the charging circuit or main board may be faulty and require professional diagnosis.