The original 13mini is a PD charger with a power of 18W PD charger.
The iPhone 13 mini supports PD fast charge, but due to the size of the body and the battery capacity, the PD fast charge power is limited to a low level, from 5W to 96W and other different power chargers can be used, but through a series of tests to get the iPhone 13 mini fast charge power at about 18W.
The 13mini can be charged with 20w fast. The charging power supported by this phone itself is more than 20 watts, so if you use a compatible charger tone and the same data cable interface and with a 20-watt charging head, it is possible to give the Apple 13mini to achieve a mobile phone support, the highest charging power is no problem.