TechCapsules

AI-summarised brief · reviewed before publication

A recent leak has revealed the battery specifications for the upcoming iPhone 17 Pro Max, which corroborates previous reports about the device's increased thickness. In March 2025, a reliable leaker reported that the iPhone 17 Pro Max would have a body depth of 8.725 millimeters, a 0.475 millimeter increase from the iPhone 16 Pro Max's 8.25 millimeters. This increase was speculated to allow for a larger battery, with calculations suggesting an additional 400 mAh of capacity. Another leaker, Instant Digital, has now confirmed that the iPhone 17 Pro Max will indeed feature a larger battery, with a capacity of 5,000 mAh - approximately 324 mAh more than its predecessor. The overlap between these two leaks lends credibility to the rumors, making them more likely to be accurate. However, despite the increased battery capacity, it is uncertain whether the iPhone 17 Pro Max will have longer battery life. This is because battery life depends on various factors, including the device's design and new features that may be introduced. For instance, the new model is expected to incorporate vapor chamber cooling technology, which will not impact battery life. Nevertheless, other new features may have an impact on battery performance. Apple is introducing new battery charging systems with iOS 26, aimed at optimizing battery life through better power management. While this will be beneficial for all iPhones, it is probable that these features were developed specifically to address the expected battery life limitations of the iPhone 17 Slim, which is rumored to have a smaller battery. Furthermore, Apple is reportedly redesigning its iPhone Fold display to extend battery life, as the device must remain reasonably slim when closed. Additionally, the iPhone 17 Slim, or Air, is expected to utilize advanced silicon-anode battery technology developed by Japan's TDK, which is believed to provide 15% more energy compared to current designs.