iPhone Duo battery rating tops Galaxy Z Fold 8 on EU label
EU energy label data lists the iPhone Duo at 4,883mAh, ahead of Samsung's and Google's foldables, though Samsung leads on durability ratings.
Apple’s iPhone Duo carries a larger battery than Samsung’s Galaxy Z Fold 8 models and Google’s Pixel 11 Pro Fold, according to rating data on the EU’s EPREL database. The figures, reported by 9to5Google and SamMobile, show a combined rated capacity of 4,883mAh for Apple’s first foldable. 9to5Google says MacRumors found the same number in Apple’s own documentation of the label.
Apple rarely states iPhone battery capacities publicly, so the label is the main place the number appears. SamMobile notes it is slightly above what was reported when the phone was announced last month.
How the numbers compare
On rated capacity, the Duo edges out the Galaxy Z Fold 8 Ultra at 4,854mAh. The standard Galaxy Z Fold 8 is rated at 4,660mAh, and Google’s Pixel 11 Pro Fold sits at 4,658mAh. Samsung’s marketed typical capacities are higher than its rated ones: 5,000mAh for the Ultra and 4,800mAh for the standard model.
The label also lists endurance per charge. The iPhone Duo is rated at 51 hours and 30 minutes, just under the iPhone 18 Pro at 52 hours and well short of the iPhone 18 Pro Max at 62 hours. Among the Samsung phones, the Fold 8 Ultra reaches 51 hours and 10 minutes, while the Fold 8 manages 44 hours and 10 minutes.
Samsung does better on durability measures, according to SamMobile. Its foldables carry a Class B free-fall rating, while the Duo gets Class C. The Samsung batteries are rated for 1,200 charge cycles, against 1,000 for the iPhone. The Duo has an IP68 rating for dust and water resistance.
Why it matters
The Duo is heavier and thicker than most Android foldables. 9to5Google lists it at 254g and 11.3mm when closed. The battery data suggests Apple used that extra bulk for capacity, and 9to5Google argues this makes it harder for iPhone owners to see Samsung or Google devices as full alternatives.
The label gives a mixed picture rather than a clean win. SamMobile points out that Samsung’s phones are thinner and lighter, and that their batteries are rated to hold up better over the life of the device. The Duo’s advantage is mostly in capacity and per-charge endurance, and the endurance gap over the Fold 8 Ultra is only 20 minutes.
9to5Google also reports that iPhone Duo pre-orders are already delayed well into 2027, which may limit how quickly buyers can act on any of this.
What we don’t know yet
The figures come from standardized lab ratings, not real-world use. None of the sources include independent battery tests of the Duo.
Sources
This story was compiled from the sources above with AI assistance and checked against them before publishing. How we work.