The charging speed of the full range of iPhone13 is:
MagSafe Wireless charging (up to 15 watts)
Qi Wireless charging (up to 7.5W)
Charge via USB connection to computer or power adapter
Fast charging: 30 minutes can be charged up to 50% power 12, need to use 20 watts or more power adapter (also available), if according to the 20 watt charging head, it is expected that the standard version of the iPhone13 takes about 2 hours to 2.5 hours