Galaxy S26: Ultra keeps 5,000 mAh, Edge rises to about 4,200 mAh

New regulatory listings and industry leaks suggest Samsung’s next Galaxy S26 series will make only modest changes to battery technology: the Ultra model appears set to keep the same cell capacity as its predecessor, while the Edge model will receive a noticeable but conservative increase and remain on traditional lithium ion chemistry. The documents, from Chinese certification bodies and industry tipsters, point to an early 2026 release, likely around Samsung’s usual January launch window.

A certification filing for a battery with part number EBBS948ABY shows a rated capacity of about 4,855 milliamp hours, which aligns with the marketed 5,000 mAh cells Samsung has used on its top Ultra flagships since the Galaxy S20 Ultra in 2020. The listing suggests the S26 Ultra will again use that nominal 5,000 mAh capacity. Separate leaks indicate the Ultra could finally support faster wired charging, with figures around 60 watts being circulating, up from the 45W ceiling the company has offered on Ultra phones since the S22 generation.

The S26 Edge appears to be getting a different treatment. Chinese 3C certification records for a battery bearing part number EBBS947ABY list a rated...