Estimated Capacity of 2,900 mAh

The battery features a compact and refined design. The capacity reported to me is approximately 2,900 mAh, a choice aimed at achieving a slimmer profile, consistent with Apple’s Air aesthetic. This value is designed to balance lightness and functionality.

Steel Case

Apple has chosen a steel case for the battery, a decision that follows the introduction of this technology on the iPhone 16 Pro, where the steel case enhanced heat dissipation and battery density. The advantages include:

– Improved heat dissipation

– Higher structural resistance

– Optimized integration

The steel case, successfully implemented on the iPhone 16 Pro, integrates seamlessly with the L-shaped design, fitting the reduced logic board of the iPhone 17 Air.

Technical Details

The module showcases a precise finish. The edge is carefully welded. As noted in my article “The entire iPhone 17 lineup will feature new battery adhesives“, the iPhone 17 lineup will feature new battery adhesives, making replacement easier.

Potentially More Efficient Charging

No official data is available on charging speed. However, the steel case and reduced capacity suggest an advanced thermal management system, which could support higher charging powers, an approach already initiated with the iPhone 16 Pro.

Status and Launch

These images provide further insight into the development path of the iPhone 17 Air, with the steel case reinforcing a technical direction already pursued with the iPhone 16 Pro. The anticipation for the September 2025 launch grows with each new detail.