Why does iPhone battery health drop so fast?

That the battery health of the iPhone suddenly drops is a fact that worries many users. And it is totally understandable, since there is a lot of doubt about how this percentage varies. Next we will tell you what could be the possible reasons why this happens, so that you can keep it in mind and thus avoid the wear of the battery is greater.

First of all, it is not always a reliable value

Why does iPhone battery health drop so fast

We know that the health of the battery indicates the level of deterioration of the same, being 100% its best condition and 80% a level of wear that already indicates that it is advisable to change it. However, the exact procedure that iOS uses to calculate this percentage is unknown, beyond the fact that it is based on calculations from various algorithms. Precisely the complexity of these operations could be enough to determine that it does not always show the real percentage.

Proof of this is that there are times when after restoring the iPhone or updating its software we find completely different percentages, sometimes even higher. This occurs because they are recalculated, so this is also a reason why you may have seen that it has dropped suddenly.

Causes that justify a decrease in the percentage

We start from the basis that the battery is a component that will inevitably deteriorate over time. Knowing this, we already intuit that the percentage will end up falling sooner or later, although it is true that there are certain actions that favor the deterioration to occur in less time.

The use of non-original chargers , whether they are cabled or charging cradle, is one of these factors. Being unprepared for optimized charges, they can cause the iPhone to overheat and lead to further deterioration. In the same way that this happens if the device is charging intermittently, connecting and disconnecting it continuously.

Although if there is a factor that above all affects battery health, it is to use fast charging adapters frequently . Apple limits the power of fast charging in its devices, reaching at most 20w in more recent models, this being a lower capacity than many other terminals, but it also affects. There is nothing wrong with charging the device with an adapter of this type from time to time, but if it is done constantly it will end up being noticeable in the degradation of the battery.

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And although to a lesser extent it has an influence, also the fact of consuming complete charge cycles , that is from 0% to 100% (even in a fractional way), causes the battery to suffer more wear in the end. In any case, our advice is not to be overly obsessed with this parameter and that if you suspect that the component is defective, go to Apple and request assistance to see if your iPhone needs a battery replacement.