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Samsung Galaxy S26 Edge design and battery upgrades in doubt following new leak

The Galaxy S25 Edge. (Image source: Samsung)
The Galaxy S25 Edge. (Image source: Samsung)
The Galaxy S26 Edge is projected to launch as a second-gen flagship smartphone with an even thinner chassis than that of its ultra-slim predecessor. It is also believed to have a bigger battery, although a new leak suggests that only one part of those optimistic, potentially iPhone 17 Air-destroying rumors might come to pass.

A 3,900mAh battery Android smartphone would hardly be considered to be worth as much as $980 on Amazon today - unless it had a cutting-edge 5.8 millimeter (mm) frame reinforced with titanium for advanced durability despite its lack of girth.

The Galaxy S26 Edge is backed to improve on its "beyond slim, beyond light" predecessor with a battery of 4,200mAh in typical capacity.

Samsung has allegedly registered a component that might conform to this spec with China's 3C regulator. The EB-BS947ABY's rated capacity is 4,078mAh, which might be rounded up to 4,200mAh for a typical value.

As an Easter egg, its model number suggests it was made for a smartphone known as the SM-S947, thereby hinting that the slim-line device in question will use a top-end Qualcomm processor in some markets in 2026.

Some rumors have suggested that the Galaxy S26 Edge would switch to silicon-carbon battery technology in order to ensure that it could accommodate this enhanced capacity in an even slimmer chassis.

However, the new certification specifies a traditional lithium-ion battery instead, thereby possibly suggesting that the S26 Edge might not be pared down to just 5.5mm in depth after all.

Nevertheless, it might still have more endurance than the iPhone 17 Air, especially as the S25 Edge was found to have decent screen-on times despite its unusually weedy battery.

Samsung registers an unusually skinny new smartphone battery. (Source: 3C)
Samsung registers an unusually skinny new smartphone battery. (Source: 3C)

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2025 08 > Samsung Galaxy S26 Edge design and battery upgrades in doubt following new leak
Deirdre O'Donnell, 2025-08-30 (Update: 2025-08-30)