Galaxy S27 Pro and S27 Ultra reportedly getting major battery upgrade
Leaked certification documents indicate that Samsung's upcoming Galaxy S27 Ultra and S27 Pro will feature significant battery capacity increases. These upgrades would represent the largest jump in battery size for the series since the S20 model.
Why it matters
Battery life remains a primary competitive factor in the smartphone market, and these upgrades could influence consumer purchasing decisions for flagship devices.
ⓘ Notebookcheck, edited Samsung's S27 series is expected to get its largest battery capacity jump since the S20 Ultra (pictured here). Samsung’s Galaxy S27 Ultra and S27 Pro are expected to get major battery upgrades, with certification records pointing to typical capacities of about 5,700mAh and 5,200mAh, respectively. This would mark the most significant battery upgrade since the S20. Jacob Fisher , Published 09/19/2026 Smartphone Leaks / Rumors 4 Reviews exclude selected types exclude selected tags If the latest information proves true, Samsung’s Galaxy S27 Ultra will finally get its first major battery-capacity increase in several generations. Certification listings posted by China's 3C (China Compulsory Certification) show a Samsung SDI cell rated at 5,534 mAh (model EB-BS958DBY), which would translate to roughly typical capacity of 5,700mAh.
Get smarter about the news
Sign up free for a feed built around what you actually care about, Dive Deeper research on any story, and the full text of every article.
Create free accountAlready have an account? Sign in