The difference between Apple 12 fast charging and slow charging is that with fast charging, the charging speed is fast, but it is also fast, so this is the drawback of fast charging, fast charging also damage to the battery than ordinary charging to hurt more, so the old saying is relatively fast, but Apple 12 with slow charging, the protection and life of the battery will be extended, The other thing is that it's relatively durable and you can say that you can play an Apple 12 phone for five hours when it's quickly charged and you can use an Apple 12 phone with a regular charger for five shifts, or even six hours.
The difference is that the charging speed is different, the charging speed of fast charging is faster, and it is faster, and the charging speed of slow charging is slower.