Samsung Galaxy Z Fold8 and Fold8 Ultra Could Finally Deliver a Big Battery Boost
17.07.26
Latest leaks confirm that the new line of Samsung Galaxy Z Fold8 and Galaxy Z Fold8 Ultra will receive significantly increased battery capacity. This long-awaited update aims to solve the main problem of foldable devices – autonomy. According to rumors, Samsung is the first to use advanced Si/C battery technology, which allows it to pack more power into a compact body.
Autonomy of Galaxy Z Fold8 and Fold8 Ultra: EPREL test results
According to the European Energy Performance Labeling Register (EPREL), the new products demonstrate impressive endurance ratings. The official rating was 49:10 hours for the base model and 51:00 hours for the Ultra version. These figures were achieved thanks to the use of batteries with a capacity of 4,800 mAh and 5,000 mAh, respectively.
Comparison of battery characteristics
| Model | Battery capacity | EPREL Endurance Rating |
| Galaxy Z Fold7 | 4,400 mAh | 40:28 h |
| Galaxy Z Fold8 | 4,800 mAh | 49:10 h |
| Galaxy Z Fold8 Ultra | 5,000 mAh | 51:00 h |
Why is a new battery better?
When compared to its predecessor, the Galaxy Z Fold7, the progress is obvious. Galaxy Z Fold8 Ultra shows about 20% improvement in battery life. The increase in battery capacity from 4,400 mAh in the seventh series to 4,800-5,000 mAh in the eighth is a significant step forward, which will provide users with more comfortable daily use of the device. Although actual experience varies depending on usage scenarios, such technical data provides confidence in improving the stability of smartphones under load.
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