Samsung’s upcoming Galaxy S26 Edge is rumored to ship with a noticeably larger battery compared to its predecessor, addressing one of the few compromises made to maintain the ultra-thin design of the current model. According to leaks and reports from sources including the Chinese tipster Instant Digital and other industry insiders, the Galaxy S26 Edge will pack a 4,400mAh battery—a 12% increase over the 3,900mAh battery found in the Galaxy S25 Edge.
While 4,400mAh may still seem modest compared to 2025 standards where flagship phones often feature batteries upwards of 6,000mAh, Samsung’s Edge lineup traditionally prioritizes slimness and an elegant profile over raw battery size. The Galaxy S25 Edge was noted for its super-slim design but had to make battery sacrifices to achieve that form factor. For 2026, Samsung is expected to improve battery capacity without significantly increasing thickness, possibly by adopting new materials or battery technologies.
There are no confirmed reports indicating the use of next-generation silicon-carbon battery technology yet for the S26 Edge, which is known for packing more energy into smaller spaces. How Samsung will manage fitting this larger battery while preserving its thin and premium design remains to be seen.
Apart from the battery, the Galaxy S26 Edge is expected to feature a 6.7-inch display with 1440 x 3120 resolution and 120Hz refresh rate, Gorilla Glass Ceramic 2 protection, a powerful octa-core processor (likely the Exynos 2600), and a robust camera setup including a 200MP main sensor and an 18MP ultra-wide lens. It will run Android 15 with Samsung’s One UI 8 and support 25W fast charging, wireless charging, and reverse wireless charging.
The Galaxy S26 Edge launch is anticipated in early 2026, continuing Samsung’s tradition of releasing high-end smartphones that blend innovation in display and design with balanced performance and battery efficiency.
This shift to a larger battery suggests Samsung’s response to user feedback asking for better endurance while keeping the signature slim and stylish design of the Edge series.