iPhone 17 Pro Max rumored to get a larger battery, but don’t expect longer life

A leaker claims to have specifications for the battery in the forthcoming iPhone 17 Pro Max, and they fit with previous reports about the phone being thicker than before.

Close-up of two stacked iPhones, one black, one white, highlighting their triple-lens rear cameras against a black background.

Two iPhone 17 Pro Max models — render credit AppleInsider

In March 2025, a generally reliable leaker reported that the body of the iPhone 17 Pro Max was increasing in depth to 8.725 millimeters, compared to 8.25 on the iPhone 16 Pro Max. The supposition was that this would allow for a larger battery, and AppleInsider calculated that as small as the difference was, it could potentially mean up to an additional 400 mAh.

Now another often reliable leaker, Instant Digital, has posted that the iPhone 17 Pro Max will have a 5,000 mAh battery — approximately 324 mAh more than its predecessor.

Rumor Score: 🤯 Likely

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