what is the max watt support of 15 pro max?

The iPhone 15 Pro Max appears to support about 25–27W peak wired charging , with real-world tests commonly showing around 25.5W to 26W at the top end. Apple’s own tech specs page is the safest official reference for the model details, while third-party tests suggest the practical peak is just under 27W.

What that means

• A 20W charger is enough for fast charging.
• Using a bigger charger, like 30W or 45W, usually won’t push it much higher because the phone controls the draw.
• The charging speed is not constant; it starts higher and then tapers down as the battery fills.

Simple answer

If you only want the max watt support in plain language: around 27W max, with most tests landing near 25.5W–26W.

Practical note

For everyday use, the best value is usually a good 20W or 30W USB-C charger. Higher wattage is fine to use, but the phone won’t necessarily charge proportionally faster.

TL;DR: iPhone 15 Pro Max max wired charging is roughly 25–27W , not 45W or 100W.