The battery capacities for the iPhone models are as follows:
- iPhone 15 Pro Max: It is equipped with a 4,422 mAh battery, providing substantial battery life for various usage scenarios[2][4].
- iPhone 16 Ultra: While the exact battery capacity has not been officially confirmed, it is rumored to be around 4,441 mAh, which is a slight increase over the iPhone 15 Pro Max[3][4].
These capacities suggest that the iPhone 16 Ultra may offer similar or slightly improved battery performance compared to the iPhone 15 Pro Max, depending on optimizations in software and hardware.
Citations:[1] https://www.apple.com/iphone-15-pro/specs/
[2] https://www.gsmarena.com/apple_iphone_15_pro_max-review-2618p3.php
[3] https://tech.hindustantimes.com/compare-mobile-phones/apple-iphone-16-ultra-vs-apple-iphone-15-pro-max
[4] https://tech.hindustantimes.com/compare-mobile-phones/apple-iphone-15-pro-max-512gb-vs-apple-iphone-16-ultra
[5] https://www.cnet.com/tech/mobile/my-iphone-15-pro-experience-after-a-month-these-phones-are-performance-beasts/