Samsung’s Galaxy S26 Ultra appears set to address a longstanding complaint from users through firmware evidence pointing to faster charging capabilities. Leaked One UI 8.5 code reveals references to “Super Fast Charging 3.0,” which correlates with multiple reports suggesting the upcoming flagship will support 60W wired charging.
The firmware discovery comes from analysis by developers who examined early builds of One UI 8.5, the software version expected to launch with the Galaxy S26 series in early 2026. The code includes a new “level 4” charging tier, positioned above the current 45W “level 3” designation used by Galaxy S25 Plus and S25 Ultra models.
Samsung has maintained 45W as its maximum charging speed for Ultra models since the Galaxy S22 Ultra in 2022. The S26 Ultra is rumored to retain the same 5,000mAh battery capacity while implementing the faster charging technology, which would reduce waiting times for users who frequently need quick top-ups. The upgrade puts Samsung closer to competitors offering higher wattage charging, though still below the 80W-120W speeds found in some Android devices.
Samsung’s Charging Speed Evolution
From 25W to 60W: Tracking the progression of Samsung’s fast charging technology through firmware leaks
Galaxy Flagship Charging History
Samsung’s approach to charging speeds has varied across different Ultra models, with some generations seeing increases while others maintained conservative specifications for battery longevity.
Charging Speed Comparison
The firmware leak suggests a 33% increase in maximum charging power from the current Galaxy S25 Ultra to the expected S26 Ultra specification. Real-world charging times vary based on battery temperature, charge level, and power management algorithms.
Technical Details From Firmware Analysis
The One UI 8.5 firmware leak provides insights into Samsung’s implementation strategy for 60W charging, revealing system-level optimizations beyond simple hardware upgrades. The code suggests deep software integration for power management.
The One UI 8.5 firmware leak provides the strongest evidence yet for 60W charging on the Galaxy S26 Ultra. The code contains specific references to “Super Fast Charging 3.0” and a new charging tier above the current 45W maximum, aligning with earlier rumors about the device’s specifications.
Samsung’s charging speeds have remained at 45W for Ultra models since 2022, making this the first significant increase in three years. The S26 Ultra is expected to launch in early 2026 with Qualcomm’s next flagship processor and camera improvements alongside the faster charging capability.
The firmware analysis was conducted by developers examining leaked One UI 8.5 builds. Official confirmation from Samsung has not been provided, and specifications may change before the device’s release. The information presented represents current leaks and firmware evidence rather than final product details.
