The magsafe wireless charger can be charged with 20W. Apple 12 support 20w fast charge, Apple 12 all series support PD fast charge, Qi wireless charging, but also support MagSafe wireless charging, users can use 20w fast charger for 30 minutes to charge up to 50% of the electricity
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MagSafe uses a USB-C port and requires a 20W charger to run at full power. MagSafe's input power is 18W. I hope these insights will help you.