Samsung’s Galaxy S26 series is just hours away from going official at the February 25 Unpacked event, but thanks to mandatory EU energy labels, we already have some confirmed details.
The information comes from official European certification listings. These labels are required for devices sold in the EU and include rated (minimum guaranteed) battery capacities, advertised “typical” capacities, standardized battery endurance results, and even durability metrics.
Starting with the base model, the Galaxy S26 gets a rated 4,175 mAh battery, marketed as 4,300 mAh typical. That’s a modest bump over the Galaxy S25’s roughly 4,000 mAh cell. In the EU’s standardized mixed-use test, it’s rated for 51 hours on a single charge. That suggests Samsung has managed at least incremental gains in efficiency, not just raw capacity.
The Galaxy S26+ sticks with a rated 4,755 mAh battery (advertised as 4,900 mAh typical). Endurance is listed at 55 hours, which either matches or very slightly improves on its predecessor.
Then there’s the Galaxy S26 Ultra, which continues Samsung’s now very long 5,000 mAh tradition. The rated capacity sits at 4,855 mAh, marketed as 5,000 mAh typical, unchanged for six straight generations. It also achieves 55 hours in the EU test.
Beyond battery size and endurance, the EU labels reveal some additional details. All three models score Class A for energy efficiency and drop resistance, carry IP68 dust and water protection, and receive a Class C repairability rating.
The labels indicate 80% capacity retention after 1,200 full charge cycles, which is a noticeable drop from the 2,000-cycle figure associated with the S25 series. That’s roughly a 40% reduction on paper.
All of this lines up fairly well with previous leaks. The standard S26 finally gets a capacity bump, while the Plus and Ultra models lean more on efficiency than larger cells. Whether that’s due to EU transport regulations around battery shipping thresholds, internal space constraints, or Samsung’s design priorities isn’t fully clear — but the strategy is consistent.
We now have concrete figures for capacity, endurance, and durability before the official reveal even begins. The real test, of course, will be hands-on reviews and real-world usage.
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