The Galaxy S25 and S25 Ultra have distinct battery specifications and performance characteristics that cater to different user needs.
The Galaxy S25 is equipped with a 4,000 mAh battery, while the Galaxy S25 Ultra features a larger 5,000 mAh battery. This difference in capacity is significant as it typically translates to longer usage times for the Ultra model, which is designed to support more demanding tasks and features.
Battery Life Expectations
Preliminary tests suggest that the Galaxy S25 Ultra can last up to 31 hours of video playback, while the Galaxy S25's performance is expected to be lower due to its smaller battery capacity. Although specific battery life tests for the S25 are not yet available, it is reasonable to anticipate that it will not match the Ultra's longevity given the difference in battery size and power management capabilities. The Snapdragon 8 Elite chipset used in both models enhances power efficiency, potentially benefiting both devices, but the Ultraâs larger battery gives it an inherent advantage[1][5].Charging Speed
In terms of charging, both models support fast charging, with the S25 Ultra capable of reaching 70% charge in about 30 minutes using its 45W charging capability. The Galaxy S25's charging speed has not been highlighted as prominently, but it is expected to support standard fast charging at lower rates compared to the Ultra[3][4].In summary, while both devices benefit from improved power efficiency thanks to their new chipsets, the Galaxy S25 Ultra's larger battery and enhanced charging capabilities position it as the better option for users who prioritize extended battery life and faster charging times.
Citations:[1] https://www.tomsguide.com/phones/samsung-phones/samsung-galaxy-s25-battery-life-and-charging
[2] https://www.laptopmag.com/phones/android-phones/samsung-galaxy-s25-vs-galaxy-s25-ultra-differences
[3] https://www.androidcentral.com/phones/major-galaxy-s25-ultra-battery-charging-test-highlighted
[4] https://www.gsmarena.com/samsung_galaxy_s25_plus_battery_size_revealed-news-64558.php
[5] https://mashable.com/article/samsung-galaxy-s25-ultra-vs-galaxy-s24-ultra
[6] https://m.gsmarena.com/reviewcomm-2789.php
[7] https://www.sammobile.com/news/galaxy-s25-battery-health-charge-cycle-count/
[8] https://www.pcmag.com/comparisons/samsung-galaxy-s25-vs-s25-plus-vs-s25-ultra-whats-the-difference
[9] https://www.phonearena.com/news/galaxy-s25-battery-and-charging_id163798
[10] https://www.sammyfans.com/2025/01/23/the-major-difference-between-samsung-galaxy-s25-ultra-s24-ultra-and-s23-ultra/
[11] https://www.youtube.com/watch?v=JXRs_FgNveI