Right here’s Apple’s rationalization of what you’ll be able to count on in case you allow the setting:
Once you select 80% Restrict, your iPhone will cost as much as about 80 p.c after which cease charging. If the battery cost degree will get right down to 75 p.c, charging will resume till your battery cost degree reaches about 80 p.c once more.
As we’ve been testing the setting on our evaluation gadgets, we seen that our telephones have been charging previous 80 p.c anyway. That’s apparently one thing you’ll be able to count on to see occur sometimes, in response to Apple.
With 80% Restrict enabled, your iPhone will sometimes cost to one hundred pc to take care of correct battery state-of-charge estimates.
This new possibility joins the prevailing Optimized Battery Charging setting that has been on Apple gadgets for just a few years. That setting will maintain the battery cost at 80 p.c earlier than bringing it as much as full earlier than it thinks you’ll want to make use of the telephone, primarily based in your utilization patterns. Apple additionally simply launched iOS 17.0.2 for the iPhone 15 sequence, and we’re putting in it now to see if charging truly begins to hover round 80 p.c with the brand new setting enabled.