Can you charge an iPhone 17 Pro Max with a Samsung 25W Super Fast?
Worked out from the manufacturers’ specifications. Have a different charger? Pick it below the answer.
It charges at normal speed. Fast charging needs 40 W or more.
Estimated from the manufacturer’s stated fast-charge time, with the device idle.
Try another charger
How long to 50% with each charger
Shorter bar is faster. The highlighted row is the charger on this page.
Want it faster?
Full speed needs 40 W or more. These chargers get there:
iPhone 17 Pro Max charging specs
- Fast charging needs
- 40 W
- Max input (approx.)
- 40 W
- Samsung 25W Super Fast
- 25 W · USB-C · PPS
Sources: Apple: Fast charge your iPhone · Notebookcheck: iPhone 17 Pro Max reaches 50% in 20 minutes · iGeeksBlog: iPhone 17 Pro Max hits 36W · Samsung: Wall Charger for Super Fast Charging (25W) EP-TA800 · Samsung: 25W Super Fast Charging wall charger EP-TA800 (specs). Checked 2026-10-17.
Quick answers
Is it safe to charge the iPhone 17 Pro Max with the Samsung 25W Super Fast?
Yes. USB Power Delivery negotiates power, so the iPhone 17 Pro Max only takes what it can handle and the charger only gives what it can supply. A weaker charger is slower, not dangerous.
How many watts does the iPhone 17 Pro Max need for fast charging?
40 W or more. Reaches 50% in about 20 minutes with a 40W adapter or higher; peaks around 36W in independent tests.
How long does the iPhone 17 Pro Max take to charge with the Samsung 25W Super Fast?
About 27 min to 50% and 1 h 15 min to full, estimated with the device idle.