One of the novelties that will come with iOS 13 but which was not discussed during the presentation of the new version is the optimization of the battery charge of the iPhone.
This feature is called “optimized battery charging” and what it does is lengthen the life of the battery by reducing the time during which the device is charging over 80% in periods of time.
This functionality charges your phone up to 80% then wait without doing anything, and load up to 100% only if needed. To calculate the time when you must load from 80 to 100, the iPhone learns your daily load routine.
The details on how this will work are scarce. Here’s what Apple says about it: “A new option in iOS 13 helps slow the rate of battery aging by reducing the time your iPhone spends fully charged. iPhone with iOS 13 learns from your daily charging routine so it can wait to finish charging past 80% until you need to use it.”
At first glance, this might seem preposterous: Isn’t it better to have your iPhone charged to 100% as often as possible? Well, no. Having your phone’s battery charge to 80% and discharge to 20% is better for its health than constantly charging it to 100% and draining it to 0%. This may not be noticeable in the short-term, but over the period of a year or two, it will make a difference.
Apple says that its batteries are “designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions.”
It is not the first time we see this system to extend the life of the battery. Sony smartphones have long incorporated a feature called Battery Care that is based on the same principle.