Galaxy Z Fold 8 Ultra Could Last 25% Longer Than Fold 7

If you've ever watched a phone battery die before dinner, you'll appreciate the quiet thrill of a device that simply keeps going. Samsung's next foldable looks like it might deliver exactly that: noticeably longer uptime without asking for compromise.

New entries in the European Product Registry for Energy Labelling (EPREL) reveal battery-life scores for the Galaxy Z Fold 8 family just days before the official reveal. These are not promotional claims; they're results from the EU's standardized lab tests that put devices through repeatable scenarios to produce comparable run times.

The figures are straightforward. The Galaxy Z Fold 8 reportedly carries a 4,800mAh cell and clocked 49 hours and 10 minutes in EPREL's test pattern. The Galaxy Z Fold 8 Ultra ups the capacity to 5,000mAh and reached about 51 hours. By contrast, last year's Galaxy Z Fold 7, with its 4,400mAh battery, scored 40 hours and 28 minutes on the same test.

Standardized EPREL results suggest up to 25% longer single‑charge endurance for the Fold 8 Ultra versus the Fold 7.

So where does the extra life come from? Part of it is simple physics: bigger batteries. Another part is silicon. Samsung's Fold 8 line is expected to run the Snapdragon 8 Elite Gen 5 for Galaxy, a chip that prioritizes power efficiency. Software tuning likely plays a role too — small background-sipping wins add up fast over a full day and then some.

Numbers in a lab, however, are a different animal to everyday use. EPREL gives a consistent yardstick, but real life includes different brightness levels, app habits, and network variability. Someone who streams video for hours will see different results than a user who mainly texts and scrolls.

What matters for buyers is this: Samsung seems to have pushed meaningful gains into its book‑style foldables. If those EPREL figures hold up in hands-on testing, the Fold 8 duo could remove one of the more common pain points of earlier models — battery anxiety.

We get the official unveiling next week. Will real-world usage mirror the lab numbers? That will tell whether this is a step change or just a neat-looking stat.