The iPhone 17 Pro Max brings Apple’s best battery life yet, thanks to its ~5,088 mAh cell—a roughly 8.6% jump over the 16 Pro Max. With its A19 Pro chip and improved thermal design, it sustains performance better under load. Expect up to 39 hours of video playback on a full charge. For heavier users (gaming, 5G, high brightness), it still handles a full day with room to spare. Wireless charging is included, though slower. Overall, if you want top-tier longevity and raw power in your phone, the Pro Max is the flagship to beat.
