The Samsung Galaxy S26 Edge is rumored to feature a 4,200mAh battery, only a modest ~300mAh boost over the S25 Edge, whose poor endurance drew criticism. Despite hopes for a larger upgrade, leaks suggest just a slight improvement. Interestingly, the S26 Edge may also be even slimmer at 5.5mm, matching the rumored iPhone 17 Air thickness, raising questions about how much more capacity Samsung could have added if it kept the current size.
Source: Android Authority