iPhone 18 Pro Max reportedly features a battery 10%-12% bigger than its predecessor

Last updated on August 11, 2026August 11, 2026 by Neil Hemmings on Categories Gadget

Apple’s iPhone 18 Pro Max Set for Remarkable Battery Enhancement

Recent rumors indicate that Apple’s forthcoming iPhone 18 Pro Max will boast a significant upgrade in battery capacity, as reported by MacRumors.

An alleged image circulating on the Korean platform Naver reveals a battery pack designated for the Chinese variant of the iPhone 18 Pro Max, showcasing a capacity of 5,391 mAh.

This figure marks an approximate 12% enhancement over the 4,823 mAh battery found in the Chinese model of the iPhone 17 Pro Max.

The photograph, which displays a battery unit complete with a SIM card tray, is said to have originated from Weibo, a popular Chinese social media platform.

Moreover, this same 5,391 mAh capacity was referenced in a regulatory filing from last month, adding further credence to the claim.

For the U.S. iteration of the iPhone 18 Pro Max, which omits a physical SIM tray and therefore offers more internal space, preliminary reports suggest an even higher capacity of 5,567 mAh.

This would signify nearly a 10% increase from the 5,088 mAh battery employed in the U.S. version of the iPhone 17 Pro Max.

In contrast, the smaller iPhone 18 Pro is not anticipated to exhibit substantial battery improvements. The U.S. model is projected to feature a 4,288 mAh battery, reflecting less than a 1% rise over the 4,252 mAh unit found in the current iPhone 17 Pro.

Speculations suggesting that the iPhone 18 Pro Max will have a greater thickness than its Pro counterpart may elucidate the variations in capacity upgrades.

Discrepancies in battery size across regions arise from Apple’s decision to retain physical SIM trays in select markets, while opting for eSIM-only models in the U.S. and certain other regions.

The elimination of the physical tray creates additional space, facilitating the inclusion of marginally larger batteries in these configurations.

Since the iPhone 17 series, the list of eSIM-only markets has broadened, now encompassing Canada, Japan, Mexico, Saudi Arabia, the United Arab Emirates, along with several additional countries and territories.

Close-up of a red smartphone with dual rear cameras and a flash, placed on a wooden surface with blurred lights in the background.

If these leaked specifications hold true, the iPhone 18 Pro Max is poised to provide significantly enhanced battery life when it debuts later this year.

Nevertheless, as with all unverified rumors, official confirmation will await Apple’s impending announcement.

Source link: Macdailynews.com.

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Neil Hemmings

I'm Neil Hemmings from Anaheim, CA, with an Associate of Science in Computer Science from Diablo Valley College. As Senior Tech Associate and Content Manager at RS Web Solutions, I write about AI, gadgets, cybersecurity, and apps – sharing hands-on reviews, tutorials, and practical tech insights.