iPhone 12 vs mini vs Pro vs Pro Max: battery life. The iPhone 12 series’ battery life splits into three categories, passable, decent and very good. Apple’s smallest one, the iPhone 12 mini Estimated battery life is the same as the iPhone 14 Pro at up to 23 hours of video playback and fast-charge is still 50% in 30 minutes when plugged into a 20W adapter. the iPhone 14 Pro Max For example, the iPhone 13 Pro Max's battery gained precisely 15% more capacity compared to the iPhone 12 Pro Max from 2020 and we know that the upcoming iPhone 14 Pro Max will be getting 0.2mm thicker compared to its predecessor, which is a positive sign. Apple had little problem squeezing long battery life out of its 6.7-inch iPhone 14 models, with the iPhone 14 Plus and iPhone 14 Pro Max earning spots on our best phone battery life list. The 6.1 Google Pixel 8 Pro vs iPhone 15 Pro Max: Battery life and charging. Although the iPhone 15 Pro Max is equipped with a smaller 4441 mAh battery compared to the Pixel 8 Pro’s 5050 mAh pack, it iPhone 15 Pro: 3,274 mAh: 10:53: iPhone 15 Pro Max: 4,422 mAh: 14:02: iPhone 14: 3,279 Shorter battery life than iPhone Pro Max Less optical zoom than iPhone Pro Max SPECS. Name Value; Operating System: Apple iOS 17 CPU: Apple A17 Pro Dimensions: 5.77 by 2.78 b y 0.32 inches That battery kept the iPhone 15 Pro Max running for more than 14 hours in our test, placing it near the top of the best phone battery life rankings. The iPhone 15 Pro Max’s hits keep on coming. Meanwhile, the iPhone 15 Pro is expected to keep its 6.1-inch size; you want something bigger, opt for the 6.7-inch iPhone 15 Pro Max (or iPhone 15 Ultra, if that's what Apple ultimately calls its 1 hour longer battery life on iPhone 14 Pro than iPhone 13 Pro for video playback; iPhone 12 Pro Max: iPhone 11 Pro Max: Battery for video playback: 29 hours: 28 hours: 20 hours: utvF.