iPhone 15 users looking to prolong their battery health a little further have a new option — an 80% charging hard limit.
This isn’t the usual Optimized Battery Charging setting that stops the iPhone from charging once it hits 80%, then resumes charging to 100% to finish just before the user wakes up. Instead, the iPhone will never charge past 80%.
Charging a battery is relatively efficient and uniform from 0% to 80%, but that last 20% generally takes more energy and produces more heat. This leads some users to consciously try to float their battery between 40% and 80% at all times to prolong battery health.
Now, users no longer need to monitor charging and can have it stop at 80% automatically. However, AppleInsider continues to recommend users stick with Optimized Battery Charging and avoid this new setting.
There is very little to gain from stopping an iPhone from charging past 80%. Instead, the user will suffer from not having access to the full potential of the battery capacity while only salvaging a few more weeks of battery health.
Source : https://appleinsider.com/articles/23/09/19/iphone-15-has-new-battery-health-controls-to-prevent-charging-past-80?utm_medium=rss