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1. The iPhone uses a lithium polymer battery , there is no memory effect, so ** does not need to be fully charged and discharged every time (that is, you want to charge at any time).
2. After each charge and discharge cycle of the lithium battery, the power will be reduced by a little, and will be reduced to 80% after about 400 charge and discharge cycles (comment: this is a long time ago, and should be much higher than this level now). The so-called one charge and discharge cycle means completely filling and emitting light, that is to say, if you use 20% of the electricity to be full, it is necessary to repeat the charge and discharge cycle five times.
3, because there is a chip in the battery to calculate the power, in order to calibrate, you should do a complete re-discharge every month (that is, use it after full charge).
4, as long as the use of Apple's official genuine original power supply, will become a direct use of power mode when full, there is no overcharge problem.
5, the charging process of the lithium battery is the first 90% using fast charging, the last 10% using continuous supplementary charging, which is why the first 90% charging is very fast, the charger is very hot, and then the 10% charging speed is slow, the charger becomes The reason for the coolness.
Precautions:
1. When staying in the car, avoid staying in the car in the summer or being exposed to the sun by the phone.
2. Please try to avoid heavy operations such as playing games when charging.
3. It is recommended to perform a full charge and discharge once a month in order to calibrate the battery.
iPhone and ipad battery that thing
Some knowledge of Phone/ipad battery: