[iPhone charging Guide] Supplementary charging recommendation! 3 "New Common sense" of iPhone charging

IPhone has an intelligent charging system that often evolves more effectively with iOS updates. IOS 13 also adds a new "optimized battery charging" feature that unwittingly eliminates the charging techniques previously used to extend the battery.

This time let's introduce three "new common sense" of iPhone charging as what users want to know. Please note that iOS 13.4 is the latest version at the time of this writing and may change in future updates.

As it approaches 100%, the charging speed will slow down! It's normal.

The charging speed of the IPhone is not always constant. The current iOS uses a mechanism commonly known as "trickle charging", which slows down when the battery returns to 80%.

In fact, if you use a real machine to measure how long it takes to recover the remaining battery, a certain iPhone will recover 080% at a rapid rate of 5% every few minutes, but then slow down, and when the remaining amount reaches more than 90%, it will take more than 10 minutes to recover 5%. Sometimes it takes more than 30 minutes, depending on the type and environment of the machine. This is the normal state.

Therefore, from about 80% of the battery recovery speed, if you wait at this speed, it will reach 100%. If you want to postpone going out, you will wait nearly an hour from there to being fully recharged. If you have to go out in a hurry, 80% of Maeder's stopping charging will be the most efficient.

By the way, you can also turn off this "slow after 80%" move. On the iOS Settings screen, set it from Battery, Battery status, optimize Battery charging. However, this is a function to prevent battery deterioration, so don't turn it off casually. In principle, we should continue to use it.

You can tell if the battery is broken by looking here.

Lithium-ion batteries used in IPhone are counted as a cycle when they run out of power equivalent to 100% capacity, and if repeated 500 times, the capacity is reduced to 80% of the original.

This is commonly known as "battery aging". It is not limited to iPhone. Devices that use lithium-ion batteries, such as portable battery on the market, are also a standard.

You can view the specific degradation of the battery on the iOS settings screen. This is the percentage written in "Battery", "Battery status" and "maximum capacity". The percentage of new products is 100%, and then the value decreases gradually.

By the way, the so-called 1 cycle is not a complete exhaustion of 100% 100%, it is not a count, for example, from 100% to 25% (minus 75% here), and from there to 80%. Reduced from 80% to 55% (minus 25% here) The sum is considered to be minus 100% plus 1 cycle.

When the battery deteriorates, the denominator itself decreases. Once the denominator is reduced, it will not come back, so where it deteriorates to some extent, it is better to replace the battery itself.

By the way, my personal experience is that if less than 80% is brought to Apple Store, it is often judged that it needs to be replaced (because there are multiple conditions, it cannot be generalized). If you check the above settings screen and seem to display a value that is too low, you might want to consider it.

In the past, in order to shorten the life of the battery, the "recharge" of the battery that was often recharged without running out of the battery was considered to be NG, which is a Ni-MH battery and Ni-Ni rechargeable battery, which is now used in lithium-ion batteries in iPhone. On the contrary, this "supplementary charging" is an effective method that does not age the battery. This is a typical example of common sense change. I want to update your knowledge.

Is the sudden shutdown of the IPhone a signal to "replace the battery"?

In addition to the above, there is another thing you want to know about "peak performance". When the battery ages, you will not be able to provide the power needed to drive a particular application, causing iPhone to shut down suddenly, and so on.

In fact, in order not to damage the equipment due to lack of power, iOS deliberately shuts down the phone when it is judged as "this is not good", but in the eyes of users who do not know this, it is easy to explain that "iPhone suddenly lost power" and "malfunctioned".

Once this happens, the ability to monitor performance is automatically turned on so that it doesn't happen again. This is the "peak performance" at the beginning, and you can see whether it is applicable from the settings screen. It also notifies the user when applicable.

In the case of this performance management, the screen backlight is dimmed, the speaker volume drops, the application starts slowly, and smooth scrolling becomes sharp, affecting the performance and behavior of the appearance.

It will not affect the call quality, photo and video quality, you can change the settings and turn it off, but this may cause an accidental shutdown again, which is not a good strategy. Just like working hard on the old body, it can also lead to hardware failure other than the battery.

On the other hand, if you think this performance management is on, and it is more obvious than before that it is too wasteful, then maybe it is time to replace the battery. Especially when the warranty period is about to expire, please allow me to use the right of gratitude.