Apple Filings Show iPhone 18 Pro Max Battery Reaches 5,567mAh

Q: With its largest battery ever, is Apple's iPhone 18 Pro Max set to end the battery life debate with Android?

Probably not, but it could narrow the gap sharply. The filings point to the iPhone 18 Pro Max getting Apple’s biggest battery yet, with the U.S. model listed at 5,567mAh and the China model at 5,391mAh. That is a meaningful jump from the iPhone 17 Pro Max and, on paper, puts Apple in the same range as or above many premium Android flagships. What matters more than capacity alone is the full power system. The iPhone 18 Pro Max is also expected to use a more efficient 2nm A20 Pro chip, Apple’s C2 modem, and iOS 27 optimizations. If those reports hold, Apple could deliver a noticeable real-world battery gain, especially in standby, video, and mixed daily use, where iPhones already tend to perform well relative to their battery size. Still, this is unlikely to “end” the debate with Android. Android makers continue to compete with large batteries, fast charging, adaptive refresh controls, and aggressive power management. Battery life also varies by network conditions, display brightness, camera use, gaming, and background apps, so raw mAh does not settle the issue by itself. There is also an important caveat: these figures come from regulatory filings and leaks, not Apple’s official battery-life claims or independent testing. Until reviewers compare the iPhone 18 Pro Max against top Android phones in standardized tests, the safest reading is that Apple looks poised to become more competitive on endurance, not to settle the argument permanently.

3 articles · Updated · MacRumors · Jul 6

Chinese C3 certification filings point to the iPhone 18 Pro at 4,056mAh in China and 4,288mAh in the U.S., while the Pro Max is listed at 5,391mAh and 5,567mAh.
That marks only a small rise from the iPhone 17 Pro, but a much larger jump for the Pro Max—up roughly 500mAh from 4,823mAh in China and 5,088mAh in the U.S.
U.S. capacities run higher because Apple’s U.S. iPhones have been eSIM-only since the iPhone 14, freeing space otherwise used by a physical SIM tray in other markets.
The filings also list battery models, energy ratings up to 21.751Wh and validity through May or June 2031, reinforcing a June leak that gave the same iPhone 18 Pro figures.
Apple is expected to unveil the iPhone 18 Pro lineup in September, with leakers saying the larger 5,391mAh China cell and a 2nm A20 Pro chip could improve battery life.