Can you charge a Galaxy S25 Ultra with an Apple 20W USB-C?
Worked out from the manufacturers’ specifications. Have a different charger? Pick it below the answer.
It charges at normal speed. For the fastest speed the Galaxy S25 Ultra needs a charger with PPS, which the Apple 20W USB-C doesn’t support.
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 45 W or more with PPS. These chargers get there:
Galaxy S25 Ultra charging specs
- Fast charging needs
- 45 W + PPS
- Max input (approx.)
- 45 W
- Battery
- 5,000 mAh
- Apple 20W USB-C
- 20 W · USB-C
Sources: Samsung: Galaxy S25 Ultra specs · Samsung: Compare Galaxy S25 series · SamMobile: Galaxy S25+/Ultra 45W charging · Samsung: Enable fast charging (PPS requirement) · Apple: 20W USB-C Power Adapter. Checked 2026-10-17.
Quick answers
Is it safe to charge the Galaxy S25 Ultra with the Apple 20W USB-C?
Yes. USB Power Delivery negotiates power, so the Galaxy S25 Ultra 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 Galaxy S25 Ultra need for fast charging?
45 W or more, from a USB-C PD charger that supports PPS. Super Fast Charging 2.0 (45W) works with the bundled 3A cable and a 45W PPS charger.
How long does the Galaxy S25 Ultra take to charge with the Apple 20W USB-C?
About 39 min to 50% and 1 h 40 min to full, estimated with the device idle.