In daily use, it is best not to use automatic shutdown for Apple mobile phones. Instead, it is best to charge the mobile phone when the battery is 20%-40%, and you can unplug it when it is fully charged.
Early mobile phones used nickel-cadmium batteries and nickel-hydrogen batteries, which needed similar "activation". These batteries will have a "memory effect" When they are charged under incomplete discharge, they are easily overcharged. After a long time, users will feel that the power is running out, so it takes 12 hours to fully charge for the first time, and it is best to recharge when there is no power.
The battery used by iphone is a lithium-ion battery. Its initialization process has been completed at the time of manufacture, so it does not need to be activated when it is used. Lithium batteries also have no memory effect and can be charged at any time.
If the mobile phone is turned off automatically, the internal voltage of the lithium battery will be too low due to excessive discharge, and it may not be able to start and charge. Therefore, lithium battery charging pays attention to "eat less and eat more meals", and frequent shallow charging and discharging is more helpful to prolong its life.
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Precautions for mobile phone charging:
1. Before leaving the factory, all the batteries are activated and pre-charged, so all the batteries have residual power. Some friends say that the battery is charged according to the adjustment cycle, and the standby time is still seriously insufficient. Assuming that the battery is indeed a genuine battery, in this case, the adjustment period should be extended, and then the battery should be discharged by Wally for 3~5 times. ?
2. If the newly bought mobile phone battery is lithium ion, the first 3~5 times of charging is generally called the adjustment period, and it needs to be charged for 12 hours to ensure the full activation of lithium ion. Lithium-ion batteries have no memory effect, but they have strong inertia. It should be fully activated to ensure the best performance in future use. ?
3. Some automatic intelligent fast charging displays 90% full only when the signal light changes. The charger will automatically change to a slow speed to charge the battery. It is best to use the battery after it is fully charged, otherwise the service time will be shortened. ?
4. The lithium battery does not need special discharge before charging, and improper discharge will damage the battery. When charging, try to charge slowly and reduce the fast charging mode; The time should not exceed 24 hours. After three to five complete charge and discharge cycles, the chemicals in the battery will be fully "activated" to achieve the best use effect. ?
5. Please use the charger of the original factory or reputable brand, and use the special charger for lithium battery, and use it according to the instructions, otherwise the battery will be damaged or even dangerous. ?
6. Many users often leave their mobile phones on when charging. In fact, it is easy to hurt the life of their mobile phones, because the circuit board of the mobile phone will heat up during charging. At this time, if there is an external phone, it may produce instantaneous reflux current and damage the internal parts of the mobile phone.
People's Network-It's not good for a mobile phone to keep 40% to 80% of its battery capacity fully charged.