Why should users only charge their iPhone's battery up to 80%?

According to technology experts, only charging your iPhone to 80% battery is an effective way to minimize battery drain.

Users are often "obsessed" with the battery life on their iPhones and the longest possible usage time after each charge. Every minute of time spent, every percentage, is important. However, Apple advises users to "sacrifice" nearly 1/5 of the battery capacity, which makes many people feel confused.

According to technology experts, only charging your phone to 80% is an effective way to minimize battery drain. While this means users are giving up some battery capacity, it does increase battery life and ensure more stable usage.

Picture 1 of Why should users only charge their iPhone's battery up to 80%?

iPhone 15 has a built-in feature on iOS called 80% Limit. This feature helps optimize battery charging. Previously, this feature used to limit overnight charging to 80%, only fully charging to 100% about 1 hour before the user wakes up. The new feature will make the 80% limit permanent.

Users using this feature on iPhone 15 can go to Settings > Battery > Optimized Battery Charging . Feature that can help improve iPhone battery life.

An iPhone 14 Pro Max user charged the phone to 80% and at the end of the day still had 35% battery left. Similarly, iPhone 15 Pro Max users can also use the phone with 80% battery level to perform tasks such as planning, navigation, taking photos, and recording videos for a long day without having to carry it with them. power bank and the device still has 48% battery left.

If you need to use your phone longer, for example on trips, you should bring a backup charger or disable the 80% charge limit feature. However, 80% battery is still enough for common tasks in a day.

Update 12 April 2024
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