Robot vacuum returns to dock after only a few minutes of cleaning; runtime is significantly reduced compared to normal.

Safety first: Do not use or charge a battery that is swollen, leaking, or excessively hot.

• Calibrate battery gauge: Fully charge the robot, then run it until it stops on its own. Recharge fully again. This can recalibrate the battery indicator on some models.
• Clean contacts: Wipe the charging contacts on the robot and dock with a dry cloth.
• Replace battery: If runtime remains short (e.g., less than 10–15 minutes) after calibration, replace the battery pack with a genuine Dyson replacement.

Battery packs naturally lose capacity over time; replacement is a normal maintenance item.