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I used my iPhone 15 Pro Max for over a year: Here's how the battery life has changed

My daily driver iPhone 15 Pro Max was a battery champ when it first launched. What about 18 months later?

Apple says that the battery is designed to retain 80% of its original capacity at 1,000 recharge cycles "under ideal conditions." Adrian Kingsley-Hughes/ZDNETThis iPhone is running a beta version of iOS 26, with Adaptive Power enabled, so in theory it should manage battery consumption better. However, bugs are to be expected in beta software, so I thought that might have something to do with the issue and rolled back to the latest iOS 18 release.

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