Battery or handle area becomes excessively hot to the touch during use or charging.

Safety first: If the battery is too hot to touch comfortably, stop using the vacuum and disconnect the charger immediately.

• Allow to cool: Place the battery and vacuum in a cool, dry area away from flammable materials until fully cooled.
• Check charger: Ensure you are using the original Tineco charger. Replace the charger if it is hot, noisy, or damaged.
• Inspect vents: Make sure cooling vents on the battery and handle are not blocked.
• Service recommendation: Persistent overheating suggests internal battery or charging circuit failure. Replace the battery and, if necessary, have the vacuum inspected by a technician.