With iOS 18, Apple has already introduced a nifty new way to determine if the way you charge your iPhone is operating at speeds below the threshold they determine as “optimal.” This new function appears directly in Settings, which makes it easy to spot when you’re not getting the fastest charge possible or when you charge your iPhone slowly.
First of all, you have to ask yourself What do we mean by slow charger? The answer is simple: shippers who deliver a power of 7.5 W or less Thanks to a wired system, the chargers Magsafe with less than 10W of power, when we connect our iPhone to charge in the USB hubs which are not chargers as such (for example that of a car) or chargers that power multiple devices and cannot reach powers higher than those previously mentioned.
Knowing this, if we go to Settings > Battery, We will see a slow charging message when our iPhone detects that the charger we are using is “slow”. You will also be able to identify it because in the battery level graph, the charges will be displayed in orange.
But it’s not all about the charger. because there may be situations in which our iPhone receives slow charging even with a “fast” charger. For example, if we have headphones connected to our iPhone while it is charging wirelessly, the charging is limited to 7.5W for safety reasons. In addition, if we use functions that require a lot of energy such as maximum screen brightness, playing video games or streaming videos, the iPhone manages the charging speed so as not to overheat. You can even stop charging until a stable temperature returns.
Personally, I use the trickle charge every night (wireless) to charge my iPhone and a fast charger (20 W, nothing crazy) for when I have to go out soon and I won’t have time with slow charging. This way you help maintain the battery by maintaining ever lower temperatures than with a fast charger and in the (very) long term you will notice it. I don’t mean charging it daily with a 20W charger is badbut this is likely to drain the battery more in the long run (you know, the battery health % that some of us look at so much).
