Samsung Galaxy S27 Ultra battery capacity could rise to about 5,700mAh, while a rumoured Pro model could offer 5,200mAh, according to a T3 report published online on Sept. 22. The figures are unconfirmed estimates linked to purported regulatory information.
For context, Samsung lists the Galaxy S26 Ultra with a typical battery capacity of 5,000mAh and a rated capacity of 4,855mAh. Those are different measurements, making it important to establish which figure is being compared when assessing a possible upgrade.