The charging speed of fast charge and slow charge is really different, mainly because the physical and chemical reaction mechanism of the battery is different when charging.
Fast charging uses the method of high current charging to fill the battery as soon as possible, but this method is easy to cause battery heating and loss, which has an impact on battery life.
The slow charge uses low current charging and does not charge too quickly, so that the battery can fully absorb electricity and has a relatively long life. Therefore, fast charging is fast, but the number of charges is not much, while slow charging is slow, but it can charge more degrees, such as significantly extending battery life.
The difference in the degree of fast charge and slow charge is mainly because they use different technologies and circuit designs. Fast charging technology uses high voltage and high current to charge quickly, but it will also cause certain damage and heat to the battery, and it is necessary to control the charging process through a professional circuit.
Slow charging uses relatively low voltage and current, making the charging process slower, which can achieve better protection of the battery. Therefore, the degree difference between fast and slow charging is to achieve an optimal balance between charging speed and battery protection.