New 3C certification filings for Apple's upcoming iPhone 18 Pro and iPhone 18 Pro Max have confirmed their battery capacities, months before the expected launch.
According to the listings, the iPhone 18 Pro is rated at 4056mAh for the China version and 4288mAh for the US version.
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That's a modest bump from the iPhone 17 Pro, which came in at 3988mAh in China and 4252mAh in the US.
This filing backs up an earlier leak from tipster Digital Chat Station, which reported a nearly identical split for the standard Pro model.
As for the iPhone 18 Pro Max, the certification reveals a 5391mAh battery for the China version and 5567mAh for the US version.
That compares to 4823mAh and 5088mAh respectively on the iPhone 17 Pro Max, an increase of roughly 500mAh.
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Chinese phone makers like Xiaomi, Oppo, and OnePlus have long been packing 7,000mAh-plus batteries into their flagships.
Apple has typically relied on chip efficiency rather than raw capacity, but a jump toward 5,500mAh paired with the rumored 2nm A20 Pro chip could help close that gap.
Other Expected Features
Beyond battery, the iPhone 18 Pro series is expected to use the A20 Pro, Apple's first chip built on a 2nm process.
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The design is likely to stay close to current models, but the Dynamic Island cutout may be smaller as some Face ID components could hide under the display.
Dummy units of the Pro Max suggest a variable aperture in the main lens that can physically adjust light intake.
The camera setup is rumored to use three 48MP sensors along with a periscope telephoto lens.
Screen sizes remain the same as last year: 6.3 inches for the Pro and 6.9 inches for the Pro Max.
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None of these details are officially confirmed, and some may change before the phones are announced, likely in September.
