Overview

• Leaked images from a Korean blog account reportedly show the iPhone 17 Air battery at just 2.49 mm thick including its metal casing.
• Leakers estimate its capacity at around 2,900 mAh, making it Apple’s thinnest battery yet but falling below the 3,000 mAh threshold.
• Analysts including Ming-Chi Kuo anticipate Apple will deploy high-density and silicon-anode battery technology supplied by TDK to maximise capacity.
• Projections conflict on real-world runtime, with The Information reporting only 60–70% of users lasting a full day versus Bloomberg’s Mark Gurman forecasting performance on par with current iPhones.
• Observers speculate that constrained internal space could lead to eSIM-only configurations or region-specific battery variants for the upcoming September launch.