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Credit: Hadlee Simons / Android Authority

TL;DR

• Samsung is reportedly testing silicon-carbon batteries in the Galaxy S27 range, after debuting them in its new foldables.
• A leaker claims that these batteries might only deliver 10% more capacity than the Galaxy S26 series.
• There’s also a chance that the vanilla Galaxy S27 misses out on this new battery tech.

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Samsung has finally embraced silicon-carbon batteries, as its new foldable phones all have this technology. We’re expecting the Galaxy S27 range to adopt this new solution as well, and a Korean tipster may have revealed more details about Samsung’s plans.

Tipster Lanzuk (@yeux1122) reports that Samsung is currently testing silicon-carbon batteries in the Galaxy S27 series. Don’t expect gigantic batteries in these new phones, though. The company hasn’t apparently decided on a final battery capacity for these phones just yet, but it’s believed that they could be 10% larger. That means the Galaxy S27 Ultra might have a 5,500mAh battery.