Today I got an iPhone 14 Pro Max and I am using my old iPhones charger (XS) to charge it. The battery is holding really well but it’s taking a long time to charge. It took about 15 minutes to charge from 87% to 88% (Using while charging). I turned off optimized charging but it didn’t help.
You need a 30W USB-C charger to charge at max speeds for the iPhone 14 Pro