Overview
- On June 2, 2026, Weibo leaker Digital Chat Station published prototype battery figures for the iPhone 18 Pro of about 4,056 mAh and 4,288 mAh.
- If those numbers hold they would represent the smallest year-over-year battery-capacity rise for a Pro model since the iPhone 12 Pro in 2020, reversing the larger gains seen in the iPhone 16 and 17 cycles.
- The leaker included ± caveats and labeled the numbers as prototypes, so the figures are unconfirmed and may change before Apple’s fall announcement.
- Reports differ on which regional variant matches each capacity, but coverage generally links the larger cell to eSIM-only models and the smaller cell to physical-SIM markets such as China.
- Coverage stresses that an expected 2nm A20-class chip and software optimizations could improve real-world battery life regardless, and the same source separately said the 18 Pro Max is testing with a much larger roughly 5,100–5,200 mAh cell while component costs rise.