Overview
- A Dutch site’s leak that spread on Monday reports rated cell capacities of about 5,087 mAh for the Galaxy S27 Pro and about 5,534 mAh for the S27 Ultra, which publishers say Samsung would likely market as roughly 5,200 mAh and 5,700–5,800 mAh respectively.
- The reported increases are linked to silicon‑carbon anode technology that boosts energy density by replacing part of the graphite anode with silicon‑carbon material so batteries hold more charge in the same volume.
- Not all tipsters agree on the numbers and Samsung has not confirmed any specifications, so the figures remain reported but unverified and should be treated as rumors.
- If the leaks hold, the S27 Ultra’s jump would be the biggest single capacity increase for Samsung’s Ultra line since 2020 and could noticeably improve real-world battery life, though some rival phones still use larger cells.
- Battery details for the standard S27 and S27+ are still unknown and reviewers will watch for official specs and independent tests that compare rated capacity to marketed 'typical' figures before judging real gains.