Adrian Kingsley-Hughes/ZDNET
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The battery in my 15 Pro Max was awful after 18 months of use.
I did everything Apple suggested to keep it in tip-top condition.
I'm going back to 100% charging with the iPhone 17 Pro Max.
When I got my iPhone 15 Pro Max in September 2023, I decided that I'd do everything I could to make the battery last. Well, an accident destroyed that handset, so I restarted the experiment in March 2024.
Also: The best power banks you can buy in 2025
I wanted to see just how much lifespan I could get out of the battery.
Battery life obsession
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