Apple’s battery supplier has allegedly registered two new cells with a combined minimum rated capacity of 4,883mAh for the company’s rumored foldable iPhone, according to Digital Chat Station, a prolific Chinese leaker, in a Weibo post published July 10, 2026.
Quick Summary – TLDR:
- Apple’s supplier registered two cells at 1,921mAh and 2,962mAh, combining for a minimum rated capacity of 4,883mAh for the rumored foldable iPhone.
- Digital Chat Station said the wider supply chain still expects a total nearer 4,800mAh to 5,000mAh, pending confirmation of the exact figure.
- The dual-cell layout would match existing book-style foldables, splitting the battery across the device’s two hinged halves.
- The Samsung Galaxy Z Fold7 carries 4,400mAh, per Samsung’s own listing, and the Google Pixel 10 Pro Fold carries 5,015mAh, per Google’s own listing, framing where Apple’s alleged figure would land against both rivals.
- The new number conflicts with an earlier rumor of a 5,400mAh to 5,800mAh test battery, raising questions about whether Apple downshifted the design.
What Happened?
Apple’s rumored foldable iPhone, expected to launch as the “iPhone Ultra,” is still angling toward a rumored September unveiling, but supply-chain leaks keep narrowing its specs. Digital Chat Station said Apple’s battery supplier submitted a new regulatory filing for two cells rated at 1,921mAh and 2,962mAh, and the supply chain is also predicting a total battery capacity of 4,800mAh to 5,000mAh, though the leaker cautioned this still needs further confirmation.
As Digital Chat Station described it, per Apple’s supplier filing, the dual-cell design would be in line with existing book-style foldable smartphones, which typically split the battery across the device’s two halves. That is a fundamentally different architecture than a standard iPhone, where a single cell fills the chassis.
iPhone Ultra Folding Apple iPhone is going to have a dual cell batteries, find in recently added certification.
— Tech Ultimatum (@TechieUltimatum) July 10, 2026
1921 mAh + 2962 mAh = 4883 mAh (minimum) it basically means Apple will market it as 5000 mAh.
Expected Specs:
• 7.8 Inch LTPO 120Hz ProMotion Inner Display
• 5.4… pic.twitter.com/MHKziKjLPi
How Apple’s Alleged Battery Stacks Up?
Rival foldables already on sale give the alleged figure some context. The Samsung Galaxy Z Fold7 has a 4,400mAh total battery capacity, and, per Google’s own listing, the Google Pixel 10 Pro Fold has 5,015mAh. The previous-generation Pixel 9 Pro Fold had a 4,650mAh battery.
| Device | Total battery capacity |
|---|---|
| iPhone Ultra (alleged) | 4,883mAh |
| Samsung Galaxy Z Fold7 | 4,400mAh |
| Google Pixel 10 Pro Fold | 5,015mAh |
| Google Pixel 9 Pro Fold (previous-gen) | 4,650mAh |
| iPhone 18 Pro (alleged, eSIM) | 4,288mAh |
| iPhone 18 Pro Max (alleged, eSIM) | 5,567mAh |
The same leak points to iPhone 18 Pro batteries of 4,288mAh (eSIM) or 4,056mAh (physical SIM), and iPhone 18 Pro Max batteries of 5,567mAh (eSIM) or 5,391mAh (physical SIM). Sitting between Samsung’s and Google’s current foldables rather than above them, the alleged iPhone Ultra figure reads less like a raw-capacity flex and more like a starting point Apple can refine once real units ship.
A Battery Rumor That Doesn’t Quite Add Up
The leaker’s claim appears to conflict with an early rumor suggesting Apple was testing a significantly larger 5,400mAh to 5,800mAh battery for its first foldable iPhone. That report described an engineering test configuration, so the smaller figure could reflect a later production revision rather than a reversal.
A March 2025 rumor claimed Apple placed a heavy focus on improving power efficiency while slimming down key components of its foldable iPhone, with battery life said to be a key priority for the company. Apple analyst Ming-Chi Kuo has said the device will use high-density battery cells, a route that trades raw milliamp-hours for a thinner chassis.
A smaller rated capacity paired with denser cells reads less like a downgrade and more like Apple prioritizing hinge thinness and weight over matching Samsung’s or Google’s raw numbers, a tradeoff a new foldable line can afford more easily than an established product line. Real-world endurance on a book-style foldable also hinges on how much power the larger inner display draws, so a lower rated capacity will not automatically mean shorter runtime than the comparison figures suggest.
What We Know About Apple’s Foldable iPhone?
Apple’s foldable iPhone is rumored to feature a 7.8-inch inner display and a 5.5-inch cover display, along with Touch ID instead of Face ID, an A20 chip, and Apple’s C2 modem in some countries. The device is expected to be unveiled alongside the iPhone 18 Pro models in September, and could launch as the “iPhone Ultra“.
IDC has predicted the foldable will carry an average selling price of $2,500, with storage options potentially priced as high as $3,000. That price sits well above where most buyers currently shop, and recent data show how concentrated demand already is around Apple’s existing lineup. Whether buyers pay a premium for an unproven form factor may hinge on brand loyalty as much as specs across recent iPhone cycles.
SQ Magazine’s Takeaway
A 4,883mAh rating would sit between Samsung’s Galaxy Z Fold7 and Google’s Pixel 10 Pro Fold, a defensible starting point for a new foldable line rather than evidence Apple compromised on battery life. The bigger signal is the apparent move away from the 5,400mAh to 5,800mAh test configuration floated earlier: pairing a smaller rated capacity with high-density cells points to a device built around thinness and hinge durability first, not raw capacity.
None of these figures carry Apple’s confirmation, and the supplier filing itself is known only through Digital Chat Station’s account. Watch for display-panel and case leaks in the run-up to the rumored September unveiling, since those tend to firm up chassis dimensions before Apple discloses battery specifications.
