Vacuum displays E19; LED pattern indicates over-discharge protection and unit will not turn on even after short charging.

Safety first: Do not attempt to jump-start or open the battery pack. This can be dangerous.

• Extended charging: Connect the vacuum to the original charger and leave it connected for at least 4–6 hours, even if LEDs do not light immediately. Some BMS systems need time to recover.
• Check charger output: Ensure the charger LED is on and that the adapter is slightly warm after some time. Replace the Power Adapter if it appears dead.
• Try another outlet: Use a different wall outlet to rule out power issues.
• Replace battery: If the unit still shows E19 and will not power on after extended charging, replace the Battery Pack. Deeply discharged packs are usually not recoverable.