iPhone 15 Pro Max has a super-efficient battery with up to 26 hours video playback, and up to 100 hours audio playback*. *All battery claims depend on network configuration and many other factors; actual results will vary. Battery has limited recharge cycles and may eventually need to be replaced. Battery life and charge cycles vary by use and settings. See apple.com/uk/batteries and apple.com/uk/iphone/battery.html for more information.