Optimized Battery Charging is a feature available on iOS 13 and later that is designed to reduce the wear on your battery and improve its lifespan by reducing the time your iPhone spends fully charged. When the feature is enabled, your iPhone will delay charging past 80% in certain situations, such as when it predicts that it will be connected to a charger for an extended period of time. Your iPhone uses on-device machine learning to learn your daily charging routine so that Optimized Battery Charging activates only when it predicts it will be connected to a charger for an extended period of time. The algorithm aims to ensure that your iPhone is still fully charged when unplugged.
Optimized Battery Charging is on by default when you set up your iPhone or after updating to iOS 13 or later. However, you can turn off the feature by going to Settings > Battery > Battery Health & Charging and turning off Optimized Battery Charging. When Optimized Battery Charging is active, a notification on the Lock Screen says when your iPhone will be fully charged. If you need to have your iPhone fully charged sooner, touch and hold the notification and then tap Charge Now.
Optimized Battery Charging is designed to engage only in locations where you spend the most time, such as your home and place of work. The feature doesnt engage when your usage habits are more variable, such as when you travel. Because of this, some location settings must be enabled for Optimized Battery Charging to activate. None of the location information used for this feature is sent to Apple.
In summary, Optimized Battery Charging is a feature that uses machine learning to understand your daily charging routine and delay charging past 80% in certain situations to reduce the wear on your battery and improve its lifespan.
