After the recent debut of the Galaxy Z Fold 8, Z Fold 8 Ultra, and Z Flip 8, focus has moved to Samsung's upcoming Galaxy S series. Although the devices remain months from release, fresh rumors about hardware specs have begun circulating. A new report highlights expected battery sizes for the Galaxy S27 Pro and Galaxy S27 Ultra, which are set to rank above the Plus variant in the next flagship range.

Samsung Galaxy S27 Pro and Galaxy S27 Ultra Battery Expectations

According to Dutch site Galaxy Club, the Galaxy S27 Pro is slated for a battery rated at 5,087mAh. This would likely translate to a typical advertised capacity near 5,200mAh, marking an increase from earlier suggestions of a 5,000mAh cell.

The Galaxy S27 Ultra is projected to see a more substantial increase. It may include a battery rated at 5,534mAh, potentially marketed with a typical capacity around 5,700mAh. The report indicates Samsung could even list the Galaxy S27 Ultra battery as an 5,800mAh unit.

In contrast, the Galaxy S26 Ultra launched with a 5,000mAh cell along with 60W wired and 25W wireless charging support.

Earlier leaks point to Samsung adopting silicon-carbon battery technology across its next flagship lineup. These cells provide higher energy density, enabling greater capacities without major increases in device thickness.

Battery information for the base Galaxy S27 and Galaxy S27+ models is still unavailable. The next lineup is expected to include four variants: Galaxy S27, Galaxy S27+, Galaxy S27 Pro, and Galaxy S27 Ultra.

Prior reports indicate the Galaxy S27 Pro may use Samsung's Exynos 2700 processor in regions such as South Korea and Europe, with a Snapdragon version offered in the US. The Galaxy S27 Ultra is expected to feature a custom Snapdragon 8 Elite Gen 6-series chipset for Galaxy across all markets.