Millet gallium nitride 65w charger can charge Apple 12: because although the charger is marked with 65W output, this is the highest power, but also can output the power of other various gears, in the case of the same charging protocol, the two will match the power that the phone can accept for charging.
From a security point of view, as long as it is a reliable manufacturer, whether it is a 65W gallium nitride charger or a 20W charger, there is basically no difference in charging the iPhone 12, and the power management of the charger and the internal power management of the phone will be so-called intelligent management of the output and accept power.
Of course you can. The charging protocol of Apple mobile phone is pd protocol. Millet potassium nitride 65 watts is supported by the pd protocol.