There is no clear distinction between \"fast charge\" and \"slow charge\" of the charger, which is defined according to the charging current. The way to see whether the charger is fast charging is to observe the charging current, if the charging current is greater than 0.2C and less than 0.8C, it is a fast charging appliance; When the charging current is between 0.1C and 0.2C, the charger is a slow charger; When the charging current is greater than 0.8C, the charger is a super high-speed charger.