Regulatory filings from China’s C3 database confirm battery sizes for Apple’s next iPhone 18 Pro and Pro Max. The Pro carries a 4,056 mAh cell in China and a 4,288 mAh cell in the U.S., up from 3,988 mAh and 4,252 mAh on the 17 Pro.

The Pro Max jumps to 5,391 mAh in China and 5,567 mAh in the U.S., nearly 500ீர் more than the 17 Pro Max’s 4,823 mAh and برخه 5,088 mAh. The U.S. advantage stems from Apple’s removal of the physical SIM tray, freeing space for larger batteries. Filings list battery models S2232, S2233, 2235L/2235, and 2236L/2236, with capacities up to 21.751 Wh and a 4.520 V charge limit.

The extra milliamp hours translate to noticeable endurance gains, especially when paired with the 2 nm A20 Pro processor. Rumors suggest the 18 Pro Max could see a clear battery life edge over its predecessor, a benefit for power users and early adopters of the upcoming foldable iPhone.

Apple is slated to launch the Pro and Max line in September, alongside its first foldable model. Other rumored changes include a smaller Dynamic Island, a variable‑aperture main camera, and a C2 modem outside the U.S. These tweaks signal Apple’s ongoing push to refine form factor while maintaining battery performance.