Although the chemicals in the lithium battery of mobile phone will gradually decrease in repeated charge and discharge cycles, charging the mobile phone in the right way can avoid many extra losses, thus prolonging the service life of the battery to a certain extent.
The battery should be used up and recharged every time. Should I use it when it is full?
In fact, this requirement was aimed at nickel-cadmium rechargeable batteries in earlier years. If the battery is a nickel-cadmium battery, it is easy to leave traces in the battery and reduce the battery capacity if it is not charged and discharged for a long time. This phenomenon is called battery memory effect. The commonly used lithium battery does not have this effect. Not only that, on the contrary, if the lithium battery is charged to the limit (called overcharge), it will also be exhausted to the limit (called overdischarge), which will greatly affect the charging and discharging cycle life of the lithium battery.
Can I play with my mobile phone while charging?
Most people think that playing mobile phone while charging may cause harm to the mobile phone, but in fact, this is no problem. Of course, I don't recommend it. During the charging process, the mobile phone will generate heat. Playing large-scale games while charging will increase the fever of the mobile phone and increase the risk of damage to the battery and the original mobile phone. Of course, there is no problem if you just open the browser to brush news, browse the web and chat with friends normally.
Why can't my mobile phone be charged in a low temperature environment?
In the low temperature environment, the protection mechanism of lithium battery will make the chemicals in the battery not react, unable to charge or the charging speed is too slow. It's not necessarily that your battery is broken. Try to charge your mobile phone in a warm environment. Too high a temperature will also have a bad effect on the battery of the mobile phone, so don't expose the mobile phone to the sun.
Can the mobile phone be charged all the time?
Some people have obsessive-compulsive disorder and need to keep the battery capacity of their mobile phones at 100% at all times to be safe. They always take a charging treasure when they go out, and the data cable stays at home with their mobile phones. Although this has little impact, it is definitely not good for their mobile phones to continue charging. It is best not to charge all day.
So what is the best charging method?
There is no need to deliberately pursue full charge, and there is no need to recharge when the battery is running out. When the battery of your mobile phone is less than 20%, you can start charging, and when it is 80% or 90%, it will be enough. Don't go home at night and charge it all night. When fully charged, you don't need to plug in the power supply to continue charging.
Some people say that charging the battery to 100% is not a perfect state!
There is no essential difference between a fully charged mobile phone and a fully charged 90% or more! If you know the charging principle of lithium battery, if you know the charging cycle of battery, then you will understand why I have this statement!
The charging cycle of lithium battery, a charging cycle, refers to the process of using 100%-0%, which is a charging cycle. For example, if you used 75% of the electricity that day and you still have 25% of the electricity, you will continue to charge it to 100%. You may think that I have completed a charging cycle, but you still need to use 25%, so you used 100% of the electricity. The so-called charging cycle means that your discharge reaches 100% of the battery capacity.
At this time, we can easily understand this problem: your mobile phone is charged to 100%, which is not much different from your mobile phone charging to over 90, because your battery charging cycle will not change.
However, we do not recommend charging the mobile phone to 100% frequently. In fact, this is not contradictory. Because when you charge the cell phone battery to 100%, the cell phone may get hot, which will do some harm to the health of aluminum battery.
I want to remind you here that I don't recommend charging overnight. There are not only security risks here, but also the so-called automatic battery power-off function can not completely protect our 100% battery! For example, our mobile phone continues to charge after the power is cut off and the use of the mobile phone reaches a certain threshold. Which means one night. They are all in the process of charging and disconnecting, which really has a great impact on the battery.
In fact, the charging capacity of mobile phones is 30% to 80%. Of course, this is not a fixed concept. As long as the battery capacity of the mobile phone is not less than 20%, it will not have much impact on the health of the mobile phone.
It is very helpful to develop good charging habits and eat less and more meals every day to ensure the health of mobile phone batteries.
There are different opinions about some matters needing attention in charging mobile phones, among which there are many false ones. So, is it better to fully charge the mobile phone every time, or to charge it to more than 90%?
Before discussing this issue, let's first understand what the life of mobile phone batteries is related to.
At present, smart phones use lithium batteries. Compared with the previous generation of Ni-MH batteries, lithium batteries have a longer life. Under normal circumstances, the lithium battery of mobile phone can still maintain more than 80% battery capacity after 300-500 cycles. If the mobile phone battery is fully charged, and the power is only below 80% of the designed capacity, the battery should be eliminated. In other words, the life of mobile phone battery is determined by the number of cycles.
So, what is fully charged? From a technical point of view, a fully charged mobile phone battery means that it is charged to more than 80%, even if it is fully charged at one time, not to 100%. For example, when the battery of a mobile phone is still charged at 20%, it stops when it is charged to 90%, which is considered to be fully charged.
In addition, if the battery of the mobile phone still has 20% power, go out at 70% power. When the battery is used to 40%, it will be recharged until it reaches 90%. Although it was charged twice before and after, the system thought it was fully charged.
Because the management IC settings of each mobile phone battery are different, as long as the mobile phone battery is charged to more than 90%, it is actually full at one time. So, don't think too much every time your mobile phone is fully charged.
Nowadays, mobile phones are all made of lithium batteries, so there is not much pressure. Just charge it when time permits, and there is no need to control 100% and time of charging. Just unplug the charger after the phone is fully charged. If you continue to plug in, the battery will withstand high voltage for a long time, which will have certain security risks for both the battery and the mobile phone.
First, prevent over-discharge: Do not charge the mobile phone battery after it is used up, which will cause damage to the battery. Do not charge it regularly for a long time.
Second, unplug the charger after it is fully charged: theoretically, the mobile phone will automatically stop charging after it is fully charged, but connecting the mobile phone for a long time will still cause certain security risks.
Third, charging while using: This will invisibly increase the charging time of the mobile phone, and the temperature will be greatly increased, which is harmful to both the battery and the mobile phone.
Fourth, use the original charger: charging the mobile phone with non-original charging accessories is likely to cause current instability and damage electronic components.
Today's lithium batteries don't have the same memory as Ni-MH batteries. As long as the above points are guaranteed, the life of the battery will be greatly improved.
Before discussing this issue, we must first understand what the life of mobile phone batteries is related to.
At present, smart phones use lithium batteries. Compared with the previous generation of Ni-MH batteries, lithium batteries have a longer life. Under normal circumstances, the lithium battery of mobile phone can still maintain more than 80% battery capacity after 300-500 cycles. If the mobile phone battery is fully charged, and the power is only below 80% of the designed capacity, the battery should be eliminated. In other words, the life of mobile phone battery is determined by the number of cycles.
Although the chemicals in the lithium battery of mobile phone will gradually decrease in repeated charge and discharge cycles, charging the mobile phone in the right way can avoid many extra losses, thus prolonging the service life of the battery to a certain extent.
Let's think about it first. Does the battery have to be used up and recharged every time?
In fact, this requirement was aimed at nickel-cadmium rechargeable batteries in earlier years. If the battery is a nickel-cadmium battery, it is easy to leave traces in the battery and reduce the battery capacity if it is not charged and discharged for a long time. This phenomenon is called battery memory effect. The commonly used lithium battery does not have this effect. Not only that, on the contrary, if the lithium battery is charged to the limit (called overcharge), it will also be exhausted to the limit (called overdischarge), which will greatly affect the charging and discharging cycle life of the lithium battery.
Some people have obsessive-compulsive disorder and need to keep the battery capacity of their mobile phones at 100% at all times to be safe. They always take a charging treasure when they go out, and the data cable stays at home with their mobile phones. Although this has little impact, it is definitely not good for their mobile phones to continue charging. It is best not to charge all day.
So what is the best charging method?
There is no need to deliberately pursue full charge, and there is no need to recharge when the battery is running out. When the battery of your mobile phone is less than 20%, you can start charging, and when it is 80% or 90%, it will be enough. Don't go home at night and charge it all night. When fully charged, you don't need to plug in the power supply to continue charging.
Finally, when it comes to the problem of mobile phone charging, it is necessary to extend and add a knowledge point, that is, can I play with my mobile phone while charging?
Most people think that playing mobile phone while charging may cause harm to the mobile phone, but in fact, this is no problem. Of course, I don't recommend it. During the charging process, the mobile phone will generate heat. Playing large-scale games while charging will increase the fever of the mobile phone and increase the risk of damage to the battery and the original mobile phone. Of course, there is no problem if you just open the browser to brush news, browse the web and chat with friends normally.
Invited to answer questions in this industry.
It doesn't matter whether the phone is fully charged or 90% every time. This is a personal choice.
Smart phones have been developed for so many years and are already very mature products. As far as mobile phones are concerned, there is a special power management chip to control the charging process of batteries. Usually, when the battery reaches 90%, it will turn to trickle charging. When the battery is full to 100%, the power management chip controls to disconnect the charging circuit. At this time, the battery will turn into a discharge state.
The lifetime of lithium electrons mainly depends on the number of cycles. And this cycle number refers to the battery from 0 to 100, and then from 100 to 0, so as to calculate a cycle number. For example, the maximum capacity of your battery is 1000mAh. You charge it to 800 the first time and 200 the second time. Charge once when it reaches 1000, and discharge once when it reaches 1000, no matter how many times it is used. This charge and discharge will increase the number of charge and discharge cycles by 1.
The number of charge and discharge cycles of the battery is related to the material and technology of the battery. The level of each manufacturer is different, and there are still some differences.
In a word, the current mobile phones are all lithium batteries, and the number of charging and discharging cycles determines the life of the mobile phone battery, so it makes no difference whether you charge it to 90 or 100. Just be happy.
In fact, I don't think there is any difference between being fully charged every time and being nearly fully charged. For the life of my mobile phone, it doesn't necessarily increase or shorten. No matter how much I pay attention to it, or I don't usually pay attention to the security of mobile phones, the life span of mobile phones bought since childhood is generally more than three years.
But even so, when I was charging my mobile phone, it was full, not because of anything else, but because of obsessive-compulsive disorder. Then one day, I had the same question as everyone else, because no matter how obsessive-compulsive I am, I always have to use my mobile phone in a hurry until it is fully charged.
After having such a question in my mind, I noticed that many experts and friends on the Internet mentioned that it is best not to fill it when charging, because it can prolong the service life of the battery. Of course, I also see that there is no difference in this way.
In fact, what is directly related to battery life is not the user's charging habits, but the number of cycles, that is, a charging cycle. From fullness to death, and then from death to fullness. However, the life of a lithium battery is generally 500 cycles, and then the battery will not be so easy to use.
Therefore, knowing the long life of lithium batteries, all we can do is to fully charge them every time.
In addition, there is a misunderstanding, that is, some people always say that you can't play with your mobile phone while charging. In fact, it won't have any impact, but you can still play.
To tell the truth, every time I see this question, I have a headache, because the difference between full and full is not very big.
To tell the truth, most of the mobile phones we use are lithium batteries. The number of cycles of lithium batteries is about 500. After 500 times, there will be a significant decline, which means that there will be problems such as insufficient battery capacity and excessive battery power consumption.
Some people say that these 500 cycles are 500 charges; Some replied that charging more than 80% counts as 500 times (if I do this, I will unplug it every time when it is less than 80%, will it never be used up after 500 times? )
The function of lithium battery is to convert electrical energy into chemical energy for storage, and to convert chemical energy into electrical energy for output when in use. So, in fact, this is a chemical reaction between substances inside the battery!
The so-called 500 times is only a rough figure. When all the substances in it react chemically for about 500 times, there will be a significant decline.
So even if you fill it to about 50%, some substances in it have already undergone chemical reaction, and even if you fill it to 50% every time, the corresponding substances in it have already undergone chemical reaction. And you charge it to 50%, because the power is not enough, you need to charge it repeatedly, and it is still the same in the end.
The advantage of lithium battery is that it has no memory effect, so no matter how you charge it, you can unplug it as long as you need it, and continue charging it when you need it, and the effect is the same.
Moreover, the current brand mobile phones have battery safety protection measures to prevent you from overcharging, so even if you continue charging after charging to 100%, the battery of the mobile phone will not be greatly affected.
Therefore, whether it is fully charged or more than 90% unplugged, their effects are similar, and there is almost no big difference.
Also, changing the battery is a matter of one or two hundred, and the use time can be as long as two years. There is no need to worship the mobile phone for a battery, just use it as you like.
Let me answer this question from another angle.
Is it harmful to the mobile phone to charge it overnight, or is it harmful to run out of batteries?
When it comes to mobile phone charging, we are all familiar with it, as long as people with mobile phones basically charge every day. As for mobile phone charging, I guess everyone has considered the same question, which is more harmful, charging the mobile phone overnight or charging before the battery runs out. Let's take a look today.
First of all, it is clear that charging your mobile phone all night has little effect on it. At present, most smart phones will automatically cut off the power supply when the phone is fully charged. Even if the mobile phone is charged all night, when the battery of the mobile phone is fully charged, the mobile phone will automatically be in a power-off standby state. So don't worry about the phone being charged.
Secondly, does it affect the battery to start charging every time the phone is not used up? In fact, this is basically not available and can be completely ignored. This happened in the original nickel-cadmium battery, because the nickel-cadmium rechargeable battery has a memory effect. If the battery is fully charged without reducing the battery capacity, the unused part of the battery will be unusable, but the current mobile phone batteries are all lithium batteries, which does not exist at all.
For the maintenance of lithium batteries, the most scientific charging method is to start charging when it is less than 30%. You don't have to wait until it reaches 100% before unplugging the charger. Generally, it is about 95%, which will not cause any harm to the mobile phone battery, but it will still protect the lithium battery to a certain extent.
To sum up, charging the mobile phone overnight and before using it will not do any harm to the battery of the mobile phone. Very few, if anything.