I spent two years following Apple's iPhone charging advice for better battery health - here's the result

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ZDNET's key takeaways

• 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. 

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I wanted to see just how much lifespan I could get out of the battery.

Battery life obsession

In my experience, no topic generates more articles, blog posts, and YouTube videos than how to get the best possible battery life from your iPhone, both daily runtime ...