How to use optimised battery charging on iPhone 15

It’s a cruel irony that the battery in your iPhone doesn’t like being fully charged. The longer your iPhone spends fully charged, the shorter the life of your battery. Charging your iPhone up to 100 per cent regularly can cause your battery to chemically age, which means it won’t be able to hold as much charge. Thanks, chemistry. Since iOS 13, your iPhone has had an optimised battery charging feature that’s intended to reduce the wear and tear on your battery, and now there’s a new tool in the battery protection arsenal if you’re using one of the latest models of iPhone. Here’s how to use optimised battery charging on iPhone 15.