Generally speaking, it is normal for Apple's mobile phone battery to be used for half a year, and the healthy surplus is between 85% and 99%, generally around 95%. If it is 100% or less than 80%, it is not normal. If the health drops to 80% within one year, you can replace the new battery for free.
In fact, the maximum healthy capacity of this battery comes from the data of the battery chip. The chip records the charging and discharging information of the battery and controls the battery efficiency. However, the battery health of iPhone is only a reference, not the only criterion to judge the battery status. You don't have to pay too much attention to this battery health data, but you should use your mobile phone according to your comfort.
Maintenance Skills of Apple Mobile Phone Battery
First, avoid overcharging.
Overcharging will lead to excessive battery consumption and shorten battery life. Therefore, when charging the mobile phone, don't always charge it to 100%, and try to control it between 80% and 90%. This can leave a certain buffer space for the battery and avoid excessive consumption.
Second, avoid excessive discharge.
Excessive discharge can also damage the battery. Therefore, when the battery is low, it should be charged in time to avoid the complete exhaustion of the battery. In addition, you can also turn on "low battery mode" in the settings to extend the battery life.
Third, use the original charger to charge.
Using the original charger to charge can ensure the stability of current and voltage and avoid damaging the battery. At the same time, it can also avoid accidents such as overheating and short circuit during battery charging.
Fourth, avoid being idle for a long time.
Mobile phone batteries that have not been used for a long time are easy to be damaged, because the batteries will naturally discharge. Therefore, if you don't use the mobile phone for a long time, you should charge the battery regularly to keep the battery active.