![Apple iPhone 15](http://wmstatic.global.ssl.fastly.net/ml/7290923-f-f3b629de-3ea7-49e3-8e5c-72bdedaec75c.png?width=150&height=320)
Apple iPhone 15
iOS 17
Turn optimised battery charging on or off
Using optimised battery charging, your phone reduces the time it spends fully charged which prolongs the overall battery life.
1. 1. Find "Battery Health & Charging"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7290923-f-d816297e-2fb8-4301-898b-43f581324aa6.png?width=212&height=458)
Press Battery.
![](http://wmstatic.global.ssl.fastly.net/ml/7290923-f-ff1ea4d5-a0cb-4d51-83b9-20d336745439.png?width=212&height=458)
Press Battery Health & Charging.
![](http://wmstatic.global.ssl.fastly.net/ml/7290923-f-b9be9b34-baf7-4787-a061-efcef96b0a2f.png?width=212&height=458)
Press Charging Optimisation.
![](http://wmstatic.global.ssl.fastly.net/ml/7290923-f-3187cce2-f514-4898-b3b0-cac886926e8e.png?width=212&height=458)
2. 2. Use optimised battery charging
Press Optimised Battery Charging to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7290923-f-abb398f0-8b38-4fdc-b073-1f1c404b578e.png?width=212&height=458)
3. 3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7290923-f-3187cce2-f514-4898-b3b0-cac886926e8e.png?width=212&height=458)