Can you charge a Galaxy S25 Ultra with an Apple 5W USB-A?
Worked out from the manufacturers’ specifications. Have a different charger? Pick it below the answer.
It charges, but at about 5 W instead of the 45 W the Galaxy S25 Ultra can take.
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 5W USB-A
- 5 W · USB-A
Sources: Samsung: Galaxy S25 Ultra specs · Samsung: Compare Galaxy S25 series · SamMobile: Galaxy S25+/Ultra 45W charging · Samsung: Enable fast charging (PPS requirement) · Apple: About Apple USB power adapters. Checked 2026-10-17.
Quick answers
Is it safe to charge the Galaxy S25 Ultra with the Apple 5W USB-A?
Yes, but it is a basic 5V USB-A charger without Power Delivery, so it can only deliver a few watts.
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 5W USB-A?
About 1 h 15 min to 50% and 2 h 55 min to full, estimated with the device idle.