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Galaxy S26 battery capacities compared
Samsung publishes both typical capacity and rated minimum capacity. Typical capacity is an estimated average based on variation among battery samples tested under IEC 61960; rated minimum is a separate, lower specification.
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| Model | Typical capacity | Rated minimum |
|---|---|---|
| Galaxy S26 Ultra | 5,000 mAh | 4,855 mAh |
| Galaxy S26+ | 4,900 mAh | 4,755 mAh |
| Galaxy S26 | 4,300 mAh | 4,175 mAh |
Samsung gives the S26 Ultra figures in its 2026 U.S. announcement and the S26 and S26+ figures in its 2026 global announcement. The Ultra leads the S26+ by 100 mAh of typical capacity; the S26+ leads the standard S26 by 600 mAh.
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Does the bigger mAh figure mean longer battery life?
Not necessarily. Capacity tells you how much charge a battery is designed to hold, but it does not by itself establish how long a phone lasts in everyday use. Samsung says actual battery life can vary with network environment, usage patterns and other factors. The official figures do not provide a controlled, independent runtime comparison across these three models, so the Ultra’s 100 mAh lead over the S26+ is not proof that it lasts longer in practice.
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For a meaningful endurance comparison, look for matched tests using the same network conditions, display settings and workloads. Also weigh the phone’s size and weight and its price in your market; the capacity figures alone do not settle which model is the best fit.
How the S26 capacities compare with the S25 generation
Samsung Ireland Support’s 2026 comparison lists the standard Galaxy S26 at 4,300 mAh, up from 4,000 mAh for the S25. It lists both the Galaxy S26+ and S25+ at 4,900 mAh, with no capacity increase between those generations in that comparison: Samsung Ireland’s S26 and S25 comparison.
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- IMMENSELY IMMERSIVE: No matter where you are or what you’re watching, your favorite videos and more come to life with the vibrant display on Galaxy S26
- FIT EVERYONE IN THE SHOT: Group selfies are easier on your Samsung phone with a wider front camera⁴ that captures more of the scene, so no one gets left out of the moment
A historical high-capacity Samsung phone
If “best battery capacity” means the largest figure Samsung has announced for any phone, rather than the leader among current-generation models, the historical Galaxy M51 is worth noting. Samsung India announced the M51 in 2020 with a 7,000 mAh battery, describing it at launch as India’s first smartphone with that capacity: Samsung India’s Galaxy M51 announcement. That launch record does not establish whether the M51 is currently available, so it should not be treated as a present-day buying recommendation.
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- FAST. POWERFUL. AI-READY: Power through your day with AI-accelerated performance from our fastest, smoothest and most powerful Galaxy processor yet, built to keep up with everything you do
- IMMENSELY IMMERSIVE: No matter where you are or what you’re watching, your favorite videos and more come to life with the vibrant display on Galaxy S26
- FIT EVERYONE IN THE SHOT: Group selfies are easier on your Samsung phone with a wider front camera⁴ that captures more of the scene, so no one gets left out of the moment
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