Charging the phone at night and unplugging it the next morning will cause damage to the phone? Will battery life be shortened?

On the issue of mobile phone charging, many people have been fooled by the remarks of some so-called "experts". Let’s do a simple popular science.

Whether it is an early feature phone or a current smartphone, there will be a power management chip, whose scientific name is power management IC. Even a copycat mobile phone will have a power management chip. In mobile phones, the power management chip plays a very important role. It is responsible for the conversion, distribution, detection and other power management responsibilities of the chip. In other words, monitoring battery power and charging are just the most basic functions of mobile phone power management chips.

Specifically, in daily use, the power management chip is responsible for allocating power to various components of the mobile phone. Once the battery power is detected to be too low, the system will remind the user to charge. Many mobile phones will prompt users to charge when the battery power falls below 20%. This is the result of an early warning from the power management chip.

Similarly, during the charging process, if it is detected that the battery is full, the power management chip will cut off the power supply. At this time, the mobile phone charger is still connected to the mobile phone, but it will no longer charge the battery, but will provide power to the mobile phone. Therefore, charging the phone overnight will not cause damage to the phone. Likewise, the battery life is not shortened.

Most mobile phones now use lithium batteries, and their lifespan depends on the number of times they are fully charged and discharged. Normally, after a mobile phone battery is fully charged and discharged 300-500 times, the power is only 80% of the design capacity. Once the battery power drops below 80% of the design capacity, it is time to consider replacing the battery.

Although there are various cheats on the Internet to extend the battery life of mobile phones, many consumers feel that they are ineffective. From the author's experience, it is best to charge the phone when the battery level is higher than 20%; do not play with the phone while charging, especially playing games while charging, which will cause great damage to the battery. The most important thing is to use the original charger to charge your phone.

When I saw this problem, it happened to be my habit. I charge my phone before going to bed at night and only unplug it when I wake up the next day. I was worried that it would be bad for mobile phones, and I checked some information, but these information were general and not as real as actual experiments.

I once did an experiment. I charged my phone before going to bed at night and turned on the mobile hotspot (just to consume more power after it was fully charged). When I woke up the next day, I found that the power was only 69. %, and there is no charging mark.

It can be seen from this result that charging the mobile phone overnight will not cause damage to the mobile phone. This is due to the power management system of the mobile phone. When the mobile phone is fully charged, the management system will stop charging the mobile phone until the charger is plugged in again next time. In fact, this is also the case. After I recharged the phone, the small lightning bolt on the charging logo appeared, proving that it was charging.

I have never noticed this problem before. Every time I wake up in the morning and find that the battery of my mobile phone is about 98%, I thought that the mobile phone is not fully charged. However, today’s smart phone management system has been optimized many times, and the battery management is not good. Short humanization and rationalization. In the past, our non-smartphones did not have such a function.

Moreover, the management system of smartphones will also alarm when the battery is low. It will alarm once at 30%, once at 20%, once at 10%, and once at 7%, so you can rest assured that current smartphones Charging, the perfect power management system can eliminate our worries!

It is worth reminding that if you play games while the mobile phone is charging, the mobile phone will get hot, which proves that the battery load is too large, which may cause damage to the mobile phone, and these heat radiation will also cause the components of the mobile phone to deteriorate. Aging, etc., produce some unstable factors.

Therefore, mobile phones should be used normally. Unconventional use will definitely cause damage to the mobile phone. Some are obvious, and some are accumulated damage bit by bit!

Will charging the mobile phone battery overnight have any impact on the battery? Will it have any impact on the mobile phone? Will the battery life be shortened? I believe that many people leave their phones plugged in and charging all night, and then unplug them when they wake up the next morning. This has little impact on the battery and does not have much impact on the phone. To find out why, see below.

Let me give you an example for reference: Now Apple can directly use "Battery Health" to check the current battery consumption. Last year, Apple could replace the battery at a preferential price. Many students took their old mobile phones to go there. Replaced the battery.

However, a week after changing the battery, I found that the battery had already been depleted by 1% when I checked the battery status in iOS 12. It has only been three months now, and their batteries have generally been depleted to 97% or lower. .

Why is this? The charging habits of those students are quite bad: charging their mobile phones until they are at 20% or even lower, and then charging them overnight.

As for charging my phone in the correct way, it has been nearly four months since I bought my phone and it still maintains 100% battery health.

Today’s lithium batteries no longer need to be fully discharged and recharged as before. The best way to maintain current lithium batteries is to charge them and use them as often as possible. Try not to let the power drop below 25%, and do not It also charges for a long time after being fully charged.

When a mobile phone battery is over-discharged or over-charged, it may damage the chemical reaction inside the battery.

And after charging for such a long time, aren’t you afraid of the phone boom?

Charging the phone overnight and unplugging it the next morning will have some impact on the phone itself. Whether this charging method will shorten the life of the battery cannot be generalized.

For today’s smartphones, when we first buy them, whether it is from the merchant’s introduction or the instructions that come with the phone, we will be told that when charging the phone, whether it is charging overnight or using it anytime. Charging will not cause much harm to the phone and battery.

But in fact, whether the charging method will cause harm to the mobile phone and battery still needs to be determined according to the specific situation.

Although today’s mobile phone batteries are basically lithium batteries, and they will automatically switch charging modes when the battery is full. However, mobile phones at different price points have different battery capacities, and some specific situations may occur during specific use and charging.

We don’t use professional explanations to explain this issue, but use actual use experience to explain this issue.

There isn’t much difference between the complimentary models. Of course, it must also be a lithium battery. I remember the battery rated capacity seems to be 2000mAh/7.6wh.

At first, I basically unplugged it when it was fully charged, and charged it when the battery level was lower than 20%. During this period, I occasionally used it and charged it. Two or three times, I forgot to unplug it and charge it all night. After using it for three or four months, I felt that the battery power was not very durable. At first, I basically charged it once every two days, but later it became necessary to charge it once a day. After about less than a year of use, the phone started to get hot and hot when charging. If the phone was used for more than an hour at a time, the phone would also get hot and hot, and the use time after being fully charged was getting shorter and shorter.

About a year and a half later, the battery began to bulge, and the bulging became more and more severe, causing the back cover of the phone to be lifted up by the battery. Of course, it was not obvious, and the phone became hotter and hotter. It's getting more and more serious, and the jamming is getting worse and worse, and it even shuts down automatically. I had no choice but to replace a battery. After using the new battery for about a year, the same problem occurred again, so another battery was replaced. With three batteries in less than three years, I had no choice but to switch to a better mobile phone.

The new phone does not allow you to remove the back cover to install and remove the battery, and the effect is definitely better than my last phone. Basically, charge according to the principle of charging when the battery is less than 20% and unplugging when it is full. Although there are not as many problems as the previous mobile phone, after using it for two or three months, the fully charged standby time reminder gradually decreased. I still never play it for more than 50 hours, more than 40 hours, and more than 30 hours. games, otherwise, as the number of charging times increases, the standby time will decrease faster.

In general, there is no benefit to charging the phone all night, and it will have some impact on both the phone itself and the battery life. Today's mobile phone batteries are basically fully charged in two to three hours. We should try to develop good charging habits and avoid charging all night. We should also try not to use the mobile phone while charging, as this will not harm the mobile phone and the battery. benefit.

Let’s talk about your experience.

I often do this because I play with my phone until very late before going back to rest. What should I do if I don’t charge it at night? It's definitely not possible to go to work with your phone out of battery the next day, and sometimes you need to go on a business trip. I think many people also have this habit. Because it's uncomfortable to charge and play with the phone, I just charge it for a while and then start playing. The iPhone 6splus I used was purchased in October 2015. This charging method is commonplace. The battery I replaced in June 2018 was basically two and a half years old, so there was not much damage.

Of course, the premise is that your charger and mobile phone are both regular products that have passed 3C certification, then there is no problem in charging the mobile phone overnight. Since there is a power management IC inside the phone, it will automatically power off when it is fully charged, so we don't need to worry about this problem.

Furthermore, current mobile phones are all lithium-ion batteries, so the mobile phone battery itself has no memory effect, so as long as the mobile phone is not turned off and then charged, there will basically be no problem. Nowadays, mobile phones Batteries basically calculate battery loss according to cycles. Of course, from 0-100% is a cycle. Generally, the cycle cycle of iPhones is about 400-500 times, while Android phones are basically around 700-800 times. Now it seems that the practice of making it a habit and charging it when nothing happens is actually very correct and highly recommended, so don’t worry.

Furthermore, as for whether fast charging will cause damage to the mobile phone battery, this is not the case at present. For example, OPPO Super Flash Charge can fully charge the battery in 35 minutes. It has an internal protection circuit and uses dual batteries. It is powered by a core, so this method is equivalent to charging two batteries at once, so the charging speed is relatively fast. Furthermore, it is like Huawei's 40W fast charge, which is certified by Rheinland and has an internal protection circuit, and is like ordinary fast charge. Why? How much is the official claim of charging in one hour? It is precisely because of the fear of battery loss and safety that Huawei's mate20pro can be charged to 73% in half an hour. The first one uses 40W, but in the second half you will find that the charging speed is slower. This is because The power of the charger has been reduced, which is set by the manufacturer. It not only avoids battery loss, but is also safer.

Generally speaking, as long as the phone is a genuine model, a regular brand, and the original charger has passed the national 3C certification, there is no need to worry about safety issues. In addition, there is a protection circuit inside the phone. And the power management IC chip, so charging overnight and fast charging will cause almost minimal loss to the battery and will not affect the life of the battery.

Answer completed

The previous answer missed a situation. If you don’t pay attention to this problem, it will reduce the battery life of your mobile phone, and the potential danger caused by charging your mobile phone while sleeping at night cannot be tolerated. Neglected, so I came to make up for it.

We all know that the life of a lithium battery is generally 500 charging cycles. One charging cycle refers to the number of times the lithium battery is charged to 100% full power. 500 charging cycles means charging to 100% to 500 times. After that, the capacity of the battery will drop significantly from the nominal capacity and it will begin to be eliminated.

Having said that, we can get to the point of the problem.

When charging your mobile phone at night, if you charge it with the phone turned off, because there is a power management IC to control it, it will stop as soon as it is fully charged and the battery will not be consumed. It is fine. However, if you charge it with the phone turned on, the situation is different.

When the mobile phone is in standby, it will also run programs, automatically synchronize data, etc. in the background, constantly consuming power to less than 100%. Because it is charging, the power management IC will charge the battery to 100%. If the battery power drops to less than 100%, it will be fully charged again immediately. Repeatedly, it is equivalent to increasing the number of 100% charge and discharge times and reducing the battery life.

But compared to the cost of replacing the battery, the danger that may occur when charging at night is the most terrifying.

Major manufacturers have strict quality management systems, but no matter how strict the quality management is, power management ICs cannot achieve a 100% zero failure rate. Generally, a failure rate of a few parts per million is considered quality. Qualified, first-tier brand mobile phones sell hundreds of millions of units every year, which means hundreds of mobile phones will have problems with their power management ICs. If you are unlucky enough to buy one of these hundreds of mobile phones and charge it at night, the danger may come quietly in your sleep.

Don’t think that a small probability event will not happen. You can search for relevant news on your own. Many news about mobile phone charging accidents happen while sleeping at night.

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The performance of mobile phones, including screens, processors, memory and other components, is constantly improving, but battery performance remains unchanged.

So, how can we charge it correctly? Will charging it all night have any impact on the mobile phone?