Overview
- Screenshots shared by Weibo leaker Digital Chat Station and reproduced across outlets list iPhone 18 Pro capacities at 4,056mAh (China) and 4,288mAh (U.S.) and iPhone 18 Pro Max capacities at 5,391mAh (China) and 5,567mAh (U.S.).
- The filings include battery model IDs and rated energy and voltage figures for four cells, which several publications say match prior supply‑chain chatter but do not explicitly name the phones.
- If accurate, the Pro Max gains roughly 500mAh year‑over‑year while the standard Pro sees only a few dozen mAh of change, widening the battery advantage of the larger model.
- Reporters and leakers attribute the U.S. vs international size difference to Apple’s eSIM‑only U.S. models freeing internal space by removing a physical SIM tray, and they note the Pro Max may be thicker to fit the bigger cell.
- All details remain unconfirmed because they come from leaked screenshots and supply‑chain posts, and real battery life will also depend on the new A20 chip, display tech and iOS power management; Apple is expected to unveil the Pro models in September.