9to5Mac compared the official battery life of iPhone 14, iPhone 13, iPhone 12 and iPhone 11 series smartphones to show how much Apple has improved this parameter in its smartphones generation after generation.
There is no mini model in the iPhone 14 series. Compared to the iPhone 13, the iPhone 14 smartphone does not last longer for 5 hours when playing music and 1 hour when viewing. At the same time, compared to the iPhone 12 and iPhone 11, the runtime increased by 15 and 3 hours, respectively.
iPhone 14 Pro lasts 1 hour longer than iPhone 13 Pro and 5-6 hours longer than iPhone 12 Pro and iPhone 11 Pro in video playback. The iPhone 14 Pro’s music playback time remained unchanged compared to the iPhone 13 Pro, but increased by 10 hours compared to the iPhone 12 Pro and iPhone 11 Pro.
The situation is similar with the iPhone 14 Pro Max, which runs as long as the iPhone 13 Pro Max while playing music, but 15 hours longer than the iPhone 12 Pro and iPhone 11 Pro. At the same time, video playback time increased by 1:00 compared to iPhone 13 Pro Max and 9 hours compared to iPhone 12 Pro and iPhone 11 Pro.
The iPhone 14 Plus has no rivals yet, but it allows 26 and 100 hours of video and music playback. Source