Overview
- This week multiple tech outlets reported a now‑deleted Weibo/X screenshot from tipster Fire Universe that lists a 5,425 mAh battery for an eSIM‑only iPhone 18 Pro Max and a 5,235 mAh cell for a physical‑SIM model.
- Those figures represent sizable jumps from the iPhone 17 Pro Max’s cells and equal an increase of roughly 337 mAh for the eSIM model and 412 mAh for the physical‑SIM variant versus last year.
- The numbers come from supply‑chain screenshots that outlets treat as plausible but unconfirmed, and Apple has not verified them so capacities could change before any official September announcement.
- If accurate the eSIM figure would exceed flagship Android batteries such as the Galaxy S26 Ultra’s 5,000 mAh, though real‑world battery life will also depend on the chipset, display efficiency, thermal design, and software.
- Reporting ties the battery claim to wider supply‑chain rumors about a larger vapor chamber, new camera and display hardware, a C2 modem, and an unconfirmed price increase, and verification is likely to come from teardowns or Apple disclosure.