About an hour and a half.
The charging speed of our Apple 12 mini 20 watts, he must be in the case of the original charger and charging cable need to charge the time of about an hour and a half.
If I do not use the original charging cable, but it is not the original charging cable, and bought a non-original charging cable, it will take an hour to charge 100% of the electricity.
The charging speed takes more than an hour to be fully charged, or must be the original charger, then the charging speed is faster, the procedure time is a little shorter, about an hour, if you use an ordinary charger to charge, it will affect its charging speed, may be more than two hours will be able to charge.
The 20W charger can charge 60% of the iPhone 12 mini in half an hour, 89% in 1 hour, and it takes 1 hour and 36 minutes to fully charge.