Can you charge a Galaxy S25 Ultra with a Samsung 45W Super Fast 2.0?
Worked out from the manufacturers’ specifications. Have a different charger? Pick it below the answer.
The Samsung 45W Super Fast 2.0 meets the Galaxy S25 Ultra’s top charging speed of about 45 W.
Estimated from the manufacturer’s stated fast-charge time, with the device idle.
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Galaxy S25 Ultra charging specs
- Fast charging needs
- 45 W + PPS
- Max input (approx.)
- 45 W
- Battery
- 5,000 mAh
- Samsung 45W Super Fast 2.0
- 45 W · USB-C · PPS
Sources: Samsung: Galaxy S25 Ultra specs · Samsung: Compare Galaxy S25 series · SamMobile: Galaxy S25+/Ultra 45W charging · Samsung: Enable fast charging (PPS requirement) · Samsung: 45W Super Fast Charger 2.0. Checked 2026-10-17.
Quick answers
Is it safe to charge the Galaxy S25 Ultra with the Samsung 45W Super Fast 2.0?
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 Samsung 45W Super Fast 2.0?
About 20 min to 50% and 1 h 5 min to full, estimated with the device idle.