The battery life of Samsung’s upcoming Galaxy S26 Edge may receive a significant update that directly addresses one of the most frequent grievances regarding its predecessor. A new leak suggests the 2026 model will not only be slimmer but could also pack a significantly larger battery—an unusual and potentially impressive combination.
The Galaxy S26 Edge may have a 4,400mAh battery, up from the 3,900mAh cell found in the Galaxy S25 Edge, according to a recent Weibo post by tipster Setsuna Digital. Users’ annoyance with the previous model’s comparatively short battery life may be significantly alleviated by that 500mAh increase. This most recent figure implies Samsung is still optimising the hardware, as a recent leak suggested a smaller 4,200mAh battery.
It’s interesting to note that the S26 Edge is supposedly thinner than the S25 Edge, which was already only 5.8 mm thick. This begs the question: how is Samsung managing to fit a larger battery into a smaller phone? Utilising cutting-edge battery materials like silicon-carbon, which have a higher energy storage capacity than traditional lithium-ion cells, is one option. It’s still unclear whether Samsung will fully adopt this tech, but if it does, it could allow for that larger battery without compromising on design.
