iPhone Fold Leak Points to Bigger Battery Than the 17 Pro Max

Thursday, 20 November 2025 at 02:29

Rumors about Apple’s foldable iPhone have been floating around for so long that it sometimes feels like a story that restarts every few months. Still, a new round of leaks has brought fresh details, and this time the focus is squarely on battery size. The device, often called the iPhone Fold, is still expected next year, although some sources insist 2027 remains a real possibility. Even with that uncertainty, the latest information gives us something more concrete to think about.

A Bigger Battery for Apple’s First Foldable

The newest report claims that Apple is currently testing the foldable with a larger battery than the iPhone 17 Pro Max. That model carries a 4,823 mAh battery, or 5,088 mAh if you go for the eSIM-only version. The leak suggests the foldable is being tried with a capacity somewhere between 5,400 and 5,800 mAh.

That’s not a small jump. It makes sense, though. Foldables handle more screen space, and that alone demands extra power. Anyone who uses a foldable from another brand already knows that the bigger the canvas, the hungrier the device becomes.

Learning from the iPhone Air

The report brings up an interesting example from another Apple device. Early iPhone Air test units had just a 3,000 mAh battery. By the time the final version shipped, Apple had managed to fit something larger without changing the design philosophy.

Because of that, there’s a sense that Apple could repeat the same trick with the foldable. Some insiders even believe the final capacity could lean closer to 6,000 mAh, depending on how internal components shift around as the design matures.

What the Screens Tell Us

The rumored displays give us another clue. The iPhone Fold is expected to come with a 7.58-inch inner screen and a 5.38-inch cover display. Two screens, one of them fairly large, mean more power cycles throughout the day.

A battery above 5,400 mAh doesn’t sound like overkill when you imagine switching between displays, multitasking, or simply unfolding the device more often than expected.

Where Things Stand

There are still many unknowns. Apple hasn’t confirmed the product, and foldable designs tend to change right up until late-stage prototypes. But the main takeaway is clear: Apple is treating battery life as a core part of the foldable’s identity, not an afterthought.

If this leak holds true, the iPhone Fold may arrive not only as Apple’s first foldable but also as one of its longest-lasting large-screen devices.

Key Points

New leak claims the iPhone Fold is testing a 5,400–5,800 mAh battery.
This capacity would surpass the iPhone 17 Pro Max.
Apple previously increased battery size between prototype and final product (iPhone Air).
Foldable may end up closer to 6,000 mAh if design allows.
Rumored displays: 7.58” inner screen and 5.38” cover screen.