Misunderstanding of new mobile phone charging
Many friends think that the new mobile phone has to be charged for more than 12 hours in the first three times, so as to ensure the longevity of the battery. In fact, this concept is outdated. The so-called 12-hour charging battery is for nickel-metal hydride batteries, and most of the smartphones currently on the market use lithium batteries. The lithium battery does not need to be activated, and it does not use the memory function, so it can be used with the charger, and there is no such thing as a nickel-metal hydride battery.
If you want your smartphone to maintain the original endurance, you can follow the following methods to charge:
1. The new mobile phone can use the low-power alarm three times. Use the original direct charge to fill the phone in the case of power-on, and then charge it for 1 hour. This is recommended in consideration of the error of charging control. hour.
2, many people like to charge the phone before going to sleep, in fact, this will cause the phone to charge too long, so that the phone battery will cause some damage. In addition, in many areas, the voltage is high and fluctuating at night, and there is no positive effect on the maintenance of battery life.
3, the current general smartphones on the market can be charged, used, and stopped. Don't wait until the phone is completely powered off and then turn it off automatically, so the damage to the battery is very large. After the battery is fully charged, it can last for 15-30 minutes.
In fact, at present, smart phones use lithium batteries, which are not as fragile as everyone thinks. When the mobile phone battery is fully charged, the charging power will be automatically cut off to avoid overloading, so there is no need to worry about damage to the mobile phone battery. You don't have to pull up the power in the middle of the night, the user can sleep well!
Of course, what needs to be noted here is that the mobile phone charger used must be a regular charger, preferably the original charger. Some cottages or models that do not match the charger, it is best not to charge the phone at night, to prevent the charger from being of poor quality, causing the charger to burn and harm the phone.
Lu Jianguo, director of the Comprehensive Inspection Department of the National Household Appliance Quality Supervision and Inspection Center of China Household Electrical Appliances Research Institute, told the Life Times that different battery products require different methods to be charged, and must be used according to the product instructions. Early nickel-cadmium and nickel-hydrogen batteries required similar "activation." These batteries produce a "memory effect" that can be charged in an incompletely discharged state, which can easily overcharge the battery. Over time, the user will feel that the electricity is running out quickly. However, most of the batteries used in mobile phones and laptops today are lithium-ion batteries. Its initialization process is done at the time of manufacture, so no activation is required when starting to use.
Generally, the life of a lithium-ion battery can reach several hundred charge-discharge cycles. The charge-discharge cycle here refers to the process of charging the battery after it is used up, instead of plugging in the charger and then unplugging it once. Lithium batteries have no memory effect and can be charged at any time. In order to reduce the number of times of charging, the battery is deliberately filled with light and does not extend the battery life, but has a negative impact on the battery life. In addition, if the mobile phone uses an automatic shutdown, the lithium battery may cause the internal voltage to be too low due to excessive discharge, and the battery may not be turned on and charged. Therefore, lithium battery charging pays attention to "eat less meals", frequent shallow charge and discharge can help to extend its life.
Lithium batteries generally have safety protection circuits and various safety devices to ensure that the battery circuit is automatically cut off during overcharge and discharge and short circuit; excessive internal pressure of the battery will trigger the decompression of the exhaust device; if the battery temperature is too high, it will trigger heat. The protective device is melted to stop the electrochemical reaction of the battery. Therefore, unless there is a quality problem, the battery will not explode due to long-term charging. However, not fully unplugging the power supply after the battery is fully charged will keep the battery fully charged. Although it will not explode, it will speed up the loss of battery capacity.
In addition, there are rumors that the phone will cause an explosion when the phone is charging. Lu Jianguo said that this argument is untenable. If there is such a danger, the product will set up a program that does not access the phone when charging. However, from a health point of view, the wire will limit the scope of the user's activities. When charging, the phone may be fixed in one place for a long time, causing excessive muscle tension. Therefore, it is recommended to unplug the power and then talk. Do not cover anything on the battery when charging, and do not put it on the bed to avoid fire.
You should see what battery you are. Like many lithium batteries nowadays
First of all, repeated charging from the battery will not damage the battery. Repeated discharge and discharge are basically harmless to the battery. Because lithium is active and has no memory effect, the battery made of lithium can be repeatedly discharged. The thinking of most of us (more than 90%) is still preserved in the shadow of nickel-hydrogen batteries that were popular a few years ago, because the nickel itself is not active, and the elements have a memory effect on electrons, namely: memory last discharge depth ! So if you don't run out of battery or charge for a long time (full excitation of nickel - because it is not active), you can't achieve the best charging effect, so the general charging time is one night or more hours!
However, now they have changed their comrades. We are now using lithium, which cannot exist independently in nature. It can only exist in compounds. You can refer to the periodic table. The half-life of lithium is very short and there is no memory effect, so lithium batteries are used. During the process, it is not possible to charge and discharge completely for a long time, because long-term charging will cause the very active element to undergo vigorous movement under the state of electronic saturation, and at the same time, the explosion is generated, that is, the charging time is preferably 2- 4 hours, preferably no more than 4 hours (the elements are more active, the charging is very fast, and the charging time is shortened accordingly. Even the first charge is as long as 2 hours to 4 hours, because the lithium element is no longer needed. Activated, long-term charging will affect the activity of lithium in the charging and discharging process.) By the way, the charging process of the lithium battery, during the charging process, we will find that it is full in one and a half hours or two hours. It will be better to rush for another half an hour, because the charging is done before the voltage is completed, then the electronic charging is completed, it takes about half an hour to slow down! It is also best not to completely recharge the light when using electricity. Because the light is used, the compound required for the reverse reaction of lithium is insufficient, and it cannot be fully charged, causing the battery capacitance to drop!
1. Charging time is 2-4 hours (not too long, long time will seriously affect battery life and danger)
2. The first charge can't be long, and it can be charged in peacetime (do not enter the misunderstanding of NiMH battery)
3. It is not possible to use photoelectric completely (complete use of light, which has a serious impact on battery life). The number of times a lithium battery can be deeply discharged is also a few times.
4. In the process of use, I see that there is no electricity, I feel that it is not enough to use it, it can be filled with the best, and it doesn¡¯t matter if it is not full!
5. With the charge, with the charge! This is the slogan of the inventor of the lithium battery. If it is so troublesome to charge as a nickel-hydrogen battery, who would have invented a lithium battery that is much less stable than nickel-hydrogen! Mainly not to pay attention to the convenience of lithium batteries!