Autonomy of iPhone 18 Pro and Pro Max: 3C certification confirms increased battery capacity

The upcoming launch of Apple’s iPhone 18 lineup is generating more and more anticipation. Hardware details regarding the most sought-after versions, the iPhone 18 Pro and 18 Pro Max, have begun to appear online. Until now, the information was only preliminary, but fresh data from the 3C regulator database finally clarifies the situation with batteries in upcoming flagships.

New horizons for energy efficiency

Rumors about the transition to energy-efficient 2nm technological processes fueled interest in the issue of autonomy of new devices. According to information published by Digital Chat Station insider on the Weibo social network, the battery capacity of the new series will actually increase compared to its predecessors.

Upgrade iPhone 18 Pro

Analyzing the leak, you can see that the increase in capacity depends on the version of the device and the presence of a physical slot for SIM cards. The iPhone 18 Pro model, intended for markets with a SIM slot (including international sales), will now receive a 4,056 mAh battery. By comparison, the battery capacity of the iPhone 17 Pro was 3,988 mAh, which represents a gain of about 1.71%.

Versions for the US market, which have completely switched to eSIM, will be equipped with a 4,288 mAh battery. This is a small step forward compared to the 4,252 mAh installed in the previous generation model (an increase of 0.85%).

Record volume for 18 Pro Max

The most significant update affected the top-end 6.9-inch model. The iPhone 18 Pro Max showed significant improvements in performance:

• International model with SIM slot: 5,391 mAh (versus 4,823 mAh in iPhone 17 Pro Max), an increase of 11.78%.
• American version (eSIM): 5,567 mAh (versus 5,088 mAh), an increase of 9.41%.

While Apple doesn’t officially disclose the exact mAh capacity of the batteries, relying on expected runtime numbers in the specifications, the certification data gives a clear idea of the changes in the hardware. Full confidence in the configuration will come after traditional device teardowns after the official release in September.

Impact on daily use

For the average user, these changes primarily mean more reliable operation of the device under high load. Given the increase in capacity, especially noticeable in the Pro Max version, users can count on confident use of the smartphone throughout the day, even with intensive photo and video shooting or active use of resource-intensive applications.

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