Battery
I have my 45watt fast charger adapter and I am using it to charge my iPhone 14 pro max. Will it harm my iPhone?
iPhone 14 Pro Max, iOS 16
No. The charging circuitry is in the phone. It will communicate with a USB-PD power source for voltage and "pulls" as much current as it needs. USB power sources don't "push" current into a device like a AA or car battery charger.