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It could charge faster because 60W is a maximum, not the power a phone draws for an entire charging session. A reported leak says the Galaxy S27 Ultra may sustain higher charging power for longer than the S26 Ultra, but Samsung has not confirmed the S27’s specifications and there is no public independent head-to-head test. Treat the speed claim as unverified.
What the 60W limit does—and doesn’t—tell you
A 60W rating describes a charging-power ceiling under supported conditions. It does not mean a phone pulls 60W continuously from a low battery to full. Charging power changes during a session, and the peak alone cannot reveal the shape of that charging curve.
If two phones share a 60W ceiling, the one that holds a higher power level for longer could add charge more quickly over some part of the session. That is the explanation behind the S27 Ultra rumor: Android Authority attributes to leaker WalleGalaxy a claim that the phone could sustain roughly 55–56W longer in the early part of charging. This is a reported claim, not a verified measurement of the S27 Ultra.
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| Phone or claim | Battery | Charging information | Evidence status |
|---|---|---|---|
| Galaxy S26 Ultra | 5,000mAh | Up to 75% in around 30 minutes with a 60W adapter | Samsung’s official specification; adapter sold separately. Samsung Mobile Press, February 26, 2026 |
| Galaxy S27 Ultra | 5,700mAh alleged | 60W maximum alleged; reports say it may charge to full around 2–3% faster than the S26 Ultra | Rumors reported by SamMobile, October 5, 2026 and Android Authority, October 5, 2026; Samsung has not confirmed these figures. |
The S27 battery figure is also unconfirmed. If it is larger than the S26 Ultra’s, a faster full charge would need to be demonstrated across the charging session; a claim about sustaining higher power early on does not establish that the whole charge will be quicker.
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How strong is the claimed speed improvement?
Android Authority reports a possible 2–3% reduction in charging time, based on the alleged charging behavior. SamMobile also reports an alleged 2–3% faster full charge, attributing that result to internal tests and optimization. Neither report is a publicly reproducible S27-versus-S26 test, so the percentage should not be treated as a confirmed result.
Samsung’s published S26 figure—up to 75% in around 30 minutes with a 60W adapter—is a useful official baseline, but it does not validate the S27 claim. The reviewed sources do not provide an official S27 charging specification or a controlled public comparison.
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What a fair S27-versus-S26 charging test would need to show
A credible comparison would report more than each phone’s maximum wattage. It should make the test conditions and charge range clear, including:
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- Starting and ending charge: a partial top-up is not equivalent to a 0–100% run; the endpoint matters because charging behavior changes during a session.
- Capacity and energy added: compare the amount of energy delivered as well as the displayed percentage, particularly if the rumored S27 capacity differs from the S26’s.
- Equipment and conditions: adapter, cable, charging protocol, ambient and phone temperature, and software version.
- Test provenance: distinguish an official specification, a manufacturer laboratory claim, a leak about internal testing, and an independent test that others can reproduce.
What to conclude for now
The reported mechanism is plausible: two phones with the same maximum wattage can have different charging curves, and one could sustain more power for longer. But the S27 Ultra’s 60W limit, alleged 5,700mAh battery, and possible 2–3% improvement remain rumors in the sources available as of October 7, 2026. Wait for Samsung’s specifications and controlled testing before deciding that it charges faster.
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For the S26 Ultra, Samsung says the 60W adapter is sold separately and recommends Samsung-approved chargers and cables. That guidance applies to the published S26 charging claim; it does not establish S27 Ultra compatibility.
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