Samsung launched the super-slim Galaxy S25 Edge with a 3,900mAh battery this year. Rumors suggested that its successor might feature a bigger cell and even adopt a silicon-carbon battery. However, fresh information confirms that Samsung is not making that switch yet, and the Galaxy S26 Edge will continue with a lithium-ion battery.
The Galaxy S26 Edge Sticks With a Lithium-Ion Battery
The Galaxy S26 Edge sticks with a lithium-ion battery, as revealed by a new certification. The component, with part number EB-BS947ABY, has been cleared by China’s 3C authority. This approval also gives us a look at the final capacity numbers.
The rated capacity is 4,078mAh, which Samsung will officially market as 4,200mAh. This figure has been rumored several times, and now it’s confirmed. For customers waiting for a larger battery before upgrading, this should be welcome news.
No Silicon-Carbon Battery Yet
Despite earlier speculation, the listing confirms that the phone won’t feature a silicon-carbon battery. Instead, Samsung is sticking to tried-and-tested lithium-ion technology. While silicon-carbon could allow for higher capacities without increasing the phone’s thickness, Samsung has decided not to make that leap yet.
The Edge lineup is all about slimness, so it seemed like the perfect candidate for such a change. But Samsung may be playing it safe, focusing on reliability and consistency rather than rushing into a new battery type.
What It Means for Users
Compared to the 3,900mAh cell inside the Galaxy S25 Edge, the Galaxy S26 Edge gets a modest bump to 4,200mAh. That means more usage time while keeping the slim design intact.
For now, Samsung appears to be delaying the move to silicon-carbon batteries. It’s likely that the technology will arrive later, once the company is confident about mass adoption, safety, and performance.
