iPhone 18 Pro Battery Capacities Revealed by Regulatory Filings

Monday July 6, 2026 5:41 am PDT by Hartley Charlton

New Chinese regulatory certification filings appear to confirm the battery capacities of Apple's upcoming iPhone 18 Pro and ‌iPhone 18 Pro‌ Max models.

iphone 17 pro black feature
According to new filings in China's C3 database, spotted by the leaker known as "Digital Chat Station" on Weibo, the ‌iPhone 18 Pro‌ is seemingly rated for 4,056mAh in China and 4,288mAh in the U.S., up modestly from the iPhone 17 Pro's 3,988mAh and 4,252mAh. The ‌iPhone 18 Pro‌ Max shows a bigger jump, rated for 5,391mAh in China and 5,567mAh in the U.S., compared with 4,823mAh and 5,088mAh on the ‌iPhone 17‌ Pro Max, an increase of nearly 500mAh.

iPhone 18 Pro

	China	China Difference	U.S.	U.S. Difference
iPhone 16 Pro	3,582mAh	+308mAh	3,582mAh	+308mAh
‌iPhone 17‌ Pro	3,988mAh	+406mAh	4,252mAh	+670mAh
‌iPhone 18 Pro‌	4,056mAh	+68mAh	4,288mAh	+36mAh

iPhone 18 Pro Max

	China	China Difference	U.S.	U.S. Difference
‌iPhone 16‌ Pro Max	4,685mAh	+244mAh	4,685mAh	+244mAh
‌iPhone 17‌ Pro Max	4,823mAh	+138mAh	5,088mAh	+403mAh
‌iPhone 18 Pro‌ Max	5,391mAh	+568mAh	5,567mAh	+479mAh

The devices in the filings are not directly named the ‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max, but are highly likely to relate to these models.

The China and U.S. capacities differ because Apple has continued to include a SIM tray on iPhones sold outside the United States, while U.S. models have been eSIM only since the iPhone 14 lineup. Without a physical tray taking up internal space, Apple can fit a slightly larger battery into the U.S. version of each device.

The certification listings cover battery models S2232 and S2233 for the ‌iPhone 18 Pro‌ and 2235L/2235 and 2236L/2236 for the ‌iPhone 18 Pro‌ Max, and also show rated energy figures of up to 21.751Wh and a 4.520V charge limit voltage, and list all four batteries as valid through May or June 2031.

The numbers line up with Digital Chat Station's report from June, which gave identical figures for the ‌iPhone 18 Pro‌.

In a separate post the same day, Digital Chat Station said supply chain information from months earlier had already pointed to the China model landing in the "5,000mAh" range, and suggested that a 5391mAh cell paired with the 2nm A20 Pro chip could deliver a noticeable battery life improvement.

The ‌iPhone 18 Pro‌ models are rumored to feature a smaller Dynamic Island, a variable aperture main camera, the C2 modem outside of the U.S., and more. The ‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max are expected to launch in September alongside Apple's first foldable iPhone.

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Top Rated Comments

vegetassj4

18 weeks ago

Apple Introduces iPhone 18 Pro with Our Most Magical Breakthrough Yet: A Bigger Battery
CUPERTINO, CALIFORNIA — Apple today announced the iPhone 18 Pro and iPhone 18 Pro Max, featuring the biggest batteries ever in an iPhone.

For years, we've said incredible efficiency was enough. It turns out adding more battery was even better. Sometimes the most magical innovations are the ones everyone else figured out first.

"The new iPhone 18 Pro delivers our most Pro battery life ever," said an Apple executive. "It's light years ahead of the battery life we could have given you three generations ago."

Customers can now stream, game, record ProRes video, and endlessly doomscroll without watching the battery percentage drop faster than their excitement after the keynote.

Thanks to our revolutionary approach of making the battery physically larger, the iPhone 18 Pro lasts longer than ever. It's magical.

The iPhone 18 Pro starts at $1,199. The Pro Max starts at $1,399. Because bigger batteries are premium when you wait long enough.

Available this fall. Courage not included.

Score: 7 Votes (Like | Disagree)

HouseLannister

18 weeks ago

I'll be upgrading from a 15 Pro Max to the 18 Pro Max, so that is a nice bump in capacity.

And weight! 🤣

Score: 4 Votes (Like | Disagree)

ELman

18 weeks ago

Wonder why there is such a difference between I phone 18 pro max battery in China than the U.S.

"The China and U.S. capacities differ because Apple has continued to include a SIM tray on iPhones sold outside the United States, while U.S. models have been eSIM only since the iPhone 14 lineup. Without a physical tray taking up internal space, Apple can fit a slightly larger battery into the U.S. version of each device."

Score: 4 Votes (Like | Disagree)

Saladin12

18 weeks ago

I wonder why Air 2 is not included in these listings? It would make sense for it to feature here if they are planning to release it alongside other models (as rumors have suggested).

Don’t the rumours suggest a spring 2027 launch for the Air 2?

Score: 3 Votes (Like | Disagree)