The difference between fast charging and slow charging is mainly in charging power and charging time. Fast charge means that the mobile phone uses a high-power charger to charge, charging speed is fast, but at the same time, it will also produce a large amount of heat, which may affect the battery life.
Slow charge refers to the use of a low-power charger to charge, charging time is longer, but the damage to the battery is less, which can extend the service life of the battery.
We can judge whether it is fast or slow charge by looking at the output power of the charger, the general fast charge output power is more than 18W, and the slow charge power is between 5W-10W.