People often tell us what to do to ensure the life of the mobile phone battery, such as don't play with the phone while charging, don't charge it overnight, don't mix charging cables, chargers, etc., otherwise it will damage the mobile phone battery.
The flowers are becoming more and more attractive, but what is the correct posture for charging the phone?
Xiao Hei sorted out the doubts that everyone often encounters when charging, so that everyone can put aside the "charging anxiety".
1. Does the mobile phone have to be fully charged?
Regarding charging, there are always some sayings: the mobile phone is charged when it runs out of power, and it must be fully charged every time, so that it is conducive to battery maintenance, and charging at any time will affect the battery life.
In fact, these theories are rather outdated.
In the early years, rechargeable batteries, such as nickel-cadmium batteries, were mainly nickel hydroxide and cadmium metal, and the disadvantage was obvious: it had a memory effect.
Put simply, if the battery is not completely drained or fully charged before charging, the battery capacity will "remember" the amount of power when charging and when the power is off, and treat it as the maximum and minimum value of the battery charge, respectively, resulting in a decrease in battery capacity.
For example, if you often start charging when there is still 50% power left, over time the battery will "think" that the minimum charge of the battery is 50%.
But now, nickel-cadmium batteries have been phased out due to heavy metal pollution, high weight, low energy density, etc., and have been replaced by lithium-ion batteries.
Compared with nickel-cadmium batteries, lithium batteries have large capacity, no memory effect, and less heating, and have almost no disadvantages except for expensive cost.
The ultra-long-lasting Nokia small board machine in the memory of the post-80s generation is all due to lithium batteries.
2. So how to charge the lithium battery?
The precautions for lithium-ion batteries are just the opposite of those for nickel-cadmium batteries: do not recharge when you are out of power, do not overcharge, and do not need to charge and discharge deeply every time.
The life of lithium battery is generally 300~500 charging cycles, assuming that the power provided by a complete discharge is 1H, regardless of the situation that the power will be reduced after each charging cycle, the lithium battery can provide a total of 300H~500H of power.
If you charge it at 1/2H each time, you can charge it 600-1000 times, if you charge it at 1/3 each time, you can charge it 900-1500 times, and if you charge it randomly, the number of times is indefinite.
In short, the power that can be replenished into 300H-500H is constant, therefore, the life of the lithium battery is related to the total charging power of the battery, but it has nothing to do with the number of charges.
When the 300H-500H charging cycle is used up, will the battery be wasted?
No, even if the charge cycle reaches 300H-500H, the battery can generally maintain 80% capacity.
3. Can I play with my phone while charging?
If you play with your phone while charging, you will find that your phone is getting hotter and hotter, and you are always worried about whether it is going to explode.
Nowadays, the news of smartphones exploding while charging also happens from time to time, causing people to panic and dare not touch their mobile phones when charging.
So, is that right?
In fact, with the correct charging method and qualified charger charging, the mobile phone will not explode.
Charging does not affect the use, and it is normal for the mobile phone to be hot, and you can make phone calls, chat on WeChat, and watch dramas with confidence.
At present, the operating temperature range of mainstream mobile phones is 0-35 degrees Celsius, and this is also the temperature range suitable for lithium-ion battery operation.
However, when the temperature is too low or too high, the internal protection settings can slow down or even stop charging.
If you still use your phone to run large software while charging, it will even trigger the system's high temperature protection, and not only will the charging stop at this time, but you will not even be able to continue using the phone.
If you want to charge quickly, you'll have to touch your phone less. If there is nothing urgent, it is better to leave the phone and charge it early, so as to save the range of the mobile phone limited by the charging cable.
However, iPhone users who are still using Apple's ancestral slow charging do not need to worry about charging while playing, so what is there to worry about with this bit of power?
4. When charging, should you plug in the mobile phone or the charger first?
Do you connect the plug to the power supply and then connect the phone with a data cable, or connect the data cable to the phone first and then plug the plug to the power supply?
The answer is: the former.
Because if you plug the data cable into the mobile phone first, and then plug the plug into the socket to turn on the power, it may cause a large surge at the moment of insertion.
Surge, also known as surge, refers to the instantaneous overvoltage that exceeds the normal working voltage, it is a short-term current in the circuit, lasting a violent fluctuation of one millionth of a second, although it is only a very short moment, in the long run, it can bring a lot of damage to the mobile phone battery.
When you start charging your phone, you may hear some subtle buzzing sounds with your ears on your phone, which is caused by the surge.
Similarly, it is necessary to unplug the mobile phone after charging, not the charging plug, because if you unplug the charger directly, it is easy to generate reverse instantaneous current, which may also lead to accelerated battery aging and shortened battery life.
Most people will keep the charging plug on the socket strip for convenience, and this habit can effectively reduce the damage of surges to the mobile phone battery.
5. Can I mix charging cable and charger?
It is a common practice to buy a mobile phone and send supporting charging equipment, but in recent years, some manufacturers no longer give away chargers in the name of environmental protection, and can only buy them themselves.
However, the price on the official website is too high, and many people will choose cheaper and non-original ones.
As a result, many rumors have come out: an unmatched charger will cause a short circuit in the battery and affect the service life.
In fact, this statement is obviously too underestimating the charger. The charger usually has a smart chip inside it that identifies the current and voltage required by the mobile phone and adjusts it.
For example, if you buy a fast charger, the phone will "shake hands" with the charger to confirm the fast charging protocol and the voltage and current that the phone can carry. Then adjust the voltage itself to supply power according to the current that the phone can withstand, so as to prevent excessive current from entering the phone, so there is no damage to the battery.
However, the fast charging protocols used by different manufacturers are different, if your mobile phone supports fast charging, but uses a fast charging head that does not support the same protocol, the result is "slow charging".
From the point of view of saving trouble, it is most convenient to buy the official configuration directly. If you want to use a third party, it is not impossible, as long as you look for a regular manufacturer. If you want to experience the fast charging function of your phone, you can ask the merchant if they support the relevant protocols for specific phone models.
6. Can I use the USB port of the computer to charge the mobile phone?
You can use the USB port of the computer to charge the phone, the only bad thing is the long waiting time.
Nowadays, the increase in the battery capacity of mobile phones is not satisfied with the current fast pace on the basis of the original charging. For example, the previous mobile phone battery capacity was 800 mAh, charging with a current of 5V, 500ma, it is expected to take 3 hours, then the battery capacity has become the current 4000 mAh, charging with the same specification of voltage and current, the time will be doubled.
The average voltage of the USB port of the computer is 5V, the current is 500ma, and the equipment he supplies is not only the battery, but also the USB flash drive and the mouse.
The charging of mobile phones is now a variety of fast charging protocols, and the fastest can reach 40W or even more, so there is no problem with charging with the USB port of the computer except for slowness.
If you forgot to bring the charging head and only have a computer and cable on hand, you can also look at the logo next to the different USB ports.
Some computers will have a USB port with a lightning bolt logo, which can continue to provide power when the computer is turned off.
Although it is a little slower, it is not impossible to use the laptop as a large charger.
Well, the above is the correct way to charge your mobile phone shared by Xiao Hei.
In fact, the mobile phone is a tool, you don't have to bother so much, you can use it as cool and convenient as it is.
But considering our own wallets, there are some "pitfalls" that can be avoided at hand.