Recent leaks suggest Apple is testing a battery larger than 5,500 mAh for its first foldable iPhone — the biggest ever in an iPhone — a move that could finally solve one of the biggest problems with foldable phones: poor battery life.
While Samsung, Google, and Huawei have spent years refining foldable devices, Apple appears to be following its familiar playbook of waiting, learning, and then delivering a more polished experience — this time with endurance as the key upgrade.
A Foldable iPhone Could Set a New Battery Record
According to reliable sources, Apple is currently testing a battery with a capacity exceeding 5,500mAh for its first foldable iPhone. If accurate, this would become the largest battery ever used in an iPhone.
At present, the iPhone with the biggest battery is the iPhone 17 Pro Max, which reportedly packs around 5,088mAh. A foldable iPhone crossing the 5,500mAh mark would not just beat Apple’s own record but push the brand into new territory for battery performance.
This move suggests Apple is fully aware of what users expect from a foldable device — a large screen experience that doesn’t compromise on endurance.
How It Stacks Up Against Current Foldables
Even today’s premium foldable smartphones haven’t managed to reach the battery size Apple is reportedly targeting. The latest Google Pixel Fold is said to carry around a 5,015mAh battery, while Samsung’s Galaxy Z Fold models sit closer to 4,400mAh.
If Apple manages to cross the 5,500mAh threshold, it would comfortably outpace its Android rivals and potentially become the battery life leader in the foldable category — an area that has struggled for years due to thin designs and power-hungry displays.
Apple’s Focus on Efficiency, Not Just Size
The battery upgrade isn’t just about adding more capacity. Leaks suggest Apple is also working heavily on improving overall energy efficiency. This reportedly includes tighter internal layouts, the use of high-density battery cells, and deep hardware-software optimisation — a strategy Apple is already known for across its devices.
Earlier reports from reliable sources indicated Apple was experimenting with batteries in the 5,400mAh to 5,800mAh range based on supply chain information. Together, these changes could finally address one of the biggest complaints users have had with foldable smartphones.
Rumoured Specifications of the Foldable iPhone
Beyond battery improvements, the foldable iPhone is expected to come with several premium features. Leaks suggest the main foldable display will measure around 7.8 inches and fold inward, with little to no visible crease. There could also be a 5.5-inch secondary outer screen for quick tasks and notifications.
Interestingly, Apple may opt for Touch ID instead of Face ID on this model. The phone is also rumoured to feature a dual rear camera setup, a next-generation A20 processor, and Apple’s in-house C2 modem.
As for launch timing, multiple sources point to a release alongside the iPhone 18 Pro and iPhone 18 Pro Max, most likely in the fall.
Why This Could Change the Foldable Market
From our perspective at GEMCH, if Apple truly manages to solve the battery life problem — the biggest limitation of foldable phones so far — it could dramatically shift how users view this category.
A thin, durable foldable phone with strong battery endurance and Apple-level optimisation would appeal not just to existing iPhone users but also to Android customers who have been hesitant about foldables.
That said, it’s important to remember that all of this information is still based on leaks and supply chain reports. Apple has not officially confirmed anything about a foldable iPhone, including its battery size, specifications, or launch timeline.
Still, if even half of these rumours turn out to be accurate, Apple’s first foldable device is shaping up to be one of the most anticipated tech launches in the coming years.
Ramesh is a technology writer at gemch.in, covering smartphone launches, leaks, and comparisons. His articles focus on real-world features, performance, and value-for-money insights to help readers make informed buying decisions.