Samsung Galaxy S27 Pro and S27 Ultra battery capacities leak - GSMArena.com news - GSMArena.com

What the report says

GSMArena.com reported on July 27, 2026, that new rumors point to larger batteries for Samsung’s expected Galaxy S27 Pro and Galaxy S27 Ultra. Citing the same unnamed source that recently shared alleged camera details for the Galaxy S27 family, the site said the S27 Pro may have a rated battery capacity of 5,087 mAh, likely marketed around 5,200 mAh typical capacity.

The report said the Galaxy S27 Ultra could move higher, with an alleged rated capacity of 5,534 mAh and a likely advertised typical capacity of about 5,700 mAh. GSMArena compared those figures with the 5,000 mAh battery in the Galaxy S26 Ultra, noting that both rumored S27 figures would represent an increase over Samsung’s current Ultra-class model.

The article framed the potential capacity gains as a sign that Samsung may be preparing to use silicon-carbon anode battery technology in its top phones. That chemistry has already appeared in some devices from Chinese smartphone makers and is generally associated with fitting more battery capacity into limited internal space. GSMArena did not report official confirmation from Samsung, and the figures should be treated as unverified until the company announces the devices or certification records provide firmer evidence.

If accurate, the change would matter because battery life remains a major competitive point in premium smartphones, especially as displays, cameras and on-device AI features demand more power. The leak also suggests Samsung may be trying to close a perceived gap with rivals that have recently pushed flagship battery capacities higher.