● You may not have connected the vacuum cleaner to the charger correctly, please connect the vacuum cleaner to the charger correctly with the charging cable;
● You may not have inserted the adapter into the power socket correctly. Please insert the adapter into the power socket correctly;
● Due to the internal protection circuit design of the product, when the cell temperature is higher than 55 degrees, the charging time will be extended. The actual charging MOS is closed, and normal charging can only be performed after the temperature drops.