Samsung’s upcoming Galaxy S26 Edge is shaping up nicely. It is expected to launch in January 2026. A new certification reveals a welcome battery upgrade. However, its ultra-thin design goals might not be as extreme as early rumors suggested.
Bigger Battery Confirmed
According to a listing on China’s 3C database, the Galaxy S26 Edge will feature a 4,200mAh battery. This unit, listed under code EB-BS947ABY, has a rated capacity of 4,078mAh. This is a small increase from the 3,900mAh battery in the Galaxy S25 Edge. That phone launched earlier this year for about $1,000.
This upgrade might help fix one of the S25 Edge’s main complaints: battery life. The S25 Edge offered only average screen-on time. A bigger battery could give the S26 Edge an edge over Apple’s rumored iPhone 17 Air. The iPhone 17 Air is expected to have a battery as small as 2,900mAh. Apple is also rumored to be using AI to manage resources and extend battery life. Still, raw battery capacity will remain important.
No Silicon-Carbon Battery
Early guesses hinted Samsung might use silicon-carbon battery technology. This could have allowed for a thinner 5.5mm profile while increasing capacity. However, the 3C certification confirms the S26 Edge will use traditional lithium-ion. This likely means the phone’s thickness will stay close to the S25 Edge’s 5.8mm. It probably won’t match Apple’s rumored 5.65mm design.
This change also suggests a potential weight increase over its predecessor. This might happen unless Samsung uses lighter materials or makes other design adjustments.
With this certification confirmed, the S26 Edge’s battery capacity and type are set. While the upgrade should improve how long it lasts, the absence of new battery tech means Samsung’s goal of an extremely thin and light phone won’t advance much this generation.
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