Samsung Galaxy S27 Pro and S27 Ultra battery capacities leak

Posted on July 28, 2026, 5 a.m.

Samsung Galaxy S27 Series Battery Leak: Major Capacity Boost Confirmed

Exciting new details are emerging about the upcoming Samsung Galaxy S27 series! Following recent insights into their camera systems, the same reliable source has now shed light on the battery specifications for these highly anticipated smartphones. And the news is overwhelmingly positive for users seeking extended power.

First up is the Galaxy S27 Pro. This model is tipped to feature a robust battery with a rated capacity of 5,087 mAh. For marketing purposes, Samsung will likely advertise this as a typical capacity of 5,200 mAh. Considering the Pro variant is generally the more compact option in the lineup, this represents a truly impressive power bump, promising excellent endurance.

Samsung Galaxy S27 Pro Ultra phone with purple screen.

But the real showstopper appears to be the Galaxy S27 Ultra. This powerhouse device is reportedly equipped with an even larger battery, boasting a rated capacity of 5,534 mAh. Expect this to be marketed with a typical capacity of a colossal 5,700 mAh. Such a significant capacity positions the S27 Ultra as a potential leader in smartphone battery life, perfect for heavy users.

These leaked capacities mark a substantial improvement over the previous generation. To put it in perspective, both the S27 Pro and S27 Ultra are set to surpass the 5,000 mAh cell found in the current Galaxy S26 Ultra. This much-needed increase has been a long time coming for Samsung enthusiasts, who have eagerly awaited enhanced battery performance.

The move towards these higher capacities strongly suggests that Samsung might finally be incorporating silicon carbon anodes into its smartphone batteries. This advanced technology, which allows for greater energy density in the same physical space, has been adopted by several Chinese manufacturers for years. If true, it signals a significant technological leap for the Galaxy series, directly translating to superior, longer-lasting battery performance for users across both the Pro and Ultra models.

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