Samsung’s flagship device, the Galaxy S Ultra, has seen minimal upgrades in recent years, with its battery size and charging speed remaining unchanged since 2020. However, a recent leak suggests that this might change with the upcoming Galaxy S26 Ultra, which may boast a larger 5,500mAh battery and faster 65W charging speeds.
The new device’s battery improvement is expected to be around 10% larger than its predecessor, while the increased charging speed could see a 45% boost over the existing 45W fast charging. This upgrade comes as a welcome change for customers who have been waiting for Samsung to revamp its flagship’s specs.
However, there is some conflicting information on the matter, with leaker @chunvn8888 stating that the Galaxy S26 Ultra will feature a larger battery and faster charging speeds, while another reliable source, @UniverseIce, claims that the device only has a 5,000mAh battery. It remains to be seen how Samsung will balance these improvements, but it’s clear that a change is on the horizon for the Galaxy S Ultra series.
Source: https://9to5google.com/2025/07/24/samsung-galaxy-s26-ultra-battery-leak