Cordless vacuum shows E8 and may not charge or may shut down unexpectedly during use.

Safety first: Stop using the charger immediately if it is hot, smells burnt, or has visible damage. Do not continue charging a battery that triggers E8 repeatedly.

• Use original charger only: Confirm that you are using the original Tineco charger supplied with the vacuum or a Tineco-approved replacement.
• Inspect charger and cable: Check for frayed wires, bent prongs, or burn marks. Replace the charger if any damage is found.
• Check charging contacts: Examine the charging port on the vacuum or battery and the contacts on the dock. Clean gently with a dry cloth.
• Try a different outlet: Plug the charger into a known-good wall outlet (avoid power strips or extension cords) and attempt charging again.
• Monitor charging behavior: If the charger or battery becomes excessively hot, disconnect immediately. This indicates a possible internal fault.
• Replace suspect component: If E8 persists with a known-good charger, the battery pack or internal charging circuit is likely defective and should be replaced by a technician.