Today, I will sort out the three things you must know about charging your mobile phone for your friends. Just follow these three instructions to charge your appliances, and you can make your mobile phone lithium battery have a longer lifespan than others.

　　How do I charge my mobile phone? This question can be said to be a topic that has not been tired of talks in recent years. No matter how many teachings and instructions there are on the Internet, sometimes we can always hear a lot of "wrong" mobile phone charging teachings. And these teachings are nothing more than "the mobile phone must be charged for eight hours before it can be used", "the mobile phone must be completely used before it can be used", "the charger must be unplugged when the mobile phone is charged to 90%" and so on.

　　Today, I will sort out the three things you need to know about charging your mobile phone for your friends. Just follow these three instructions to charge your appliances, and you can make your mobile phone battery have a longer lifespan than others.

　　1. Lithium battery has no memory effect, excessive discharge will only accelerate it and kill it.

　　It can be said that "the mobile phone must be used up and recharged" is the first place in the list of misconceptions. Why is there such a wrong idea? In fact, "the battery has a memory effect, and if it is not used up, it will damage the battery." This is the characteristic of the Ni-MH rechargeable battery, and this kind of mainstream rechargeable battery before the lithium battery is widely used does have to wait for the battery to run out. Recharge, otherwise the battery’s stored power will be used less and less. But now smart phones, tablet computers, notebook computers, digital cameras, mobile power supplies and other products use lithium polymer batteries commonly known as "lithium batteries." This kind of battery has completely different characteristics from the Ni-MH battery: it has no memory effect and cannot be over-discharged.

　　The service life of lithium polymer batteries is calculated based on the "number of charging cycles", that is, the number of times of charging "0-100%". Simply put, if a lithium battery has a cycle life of 1,000 cycles, then theoretically, as long as the "use from 100% to 0% and then recharge from 0% back to 100%" is repeated a thousand times, then the battery is almost the same. End of life! But in fact, the physical characteristics of lithium batteries cause damage to the battery itself when it is over-discharged. If you often charge the battery at 0%, then the battery will not care if you have used it so many cycles, but will Directly died early!

　　Therefore, the first limitation of the use of lithium batteries is to never charge the battery until it is completely empty. It is best to charge the battery as much as possible when you can charge, so that the battery can be used for a long time. ~ If you often go out for a whole day and can’t recharge, often drag to go home, and the battery is less than 10% left before recharging, then it is recommended that you buy a mobile power bank with you, and don’t keep your battery away. In the ultra-low battery state~

　　2. No need to rush to unplug when fully charged and fully charged, just unplug after leaving.

　　The second-ranking misconception of charging is "Unplug it immediately after charging to 100%." In fact, whether it is a mobile phone or a computer, the manufacturer will design an anti-overcharge mechanism. When the battery is full, it will automatically switch to the power supply to supply power to the computer or mobile phone. When the charge reaches 100%, the MacBookPro will automatically switch to the power supply, and it will maintain this state until the battery drops to 95%. And if you pay attention to iOS6 (if you still have it??), the battery display in the upper right corner will also change to a plug pattern after fully charged, which is a reminder for the phone to switch to an external power supply.

　　Therefore, you don’t need to rush to unplug the power supply when you are full. Some people may wonder, "Is it okay to plug in all the time?" Regarding this...unless you can charge your phone for a week, please trust the electrical appliance manufacturer's ability to design the anti-overcharge mechanism. Got crazy!

　　3. Keep the battery power lower than 20% once every two weeks to maintain battery health.

　　If you smoothly change your charging habits after reading the above instruction, and follow the instructions above to protect the battery, then your battery has taken a big step towards "long-life battery"! But here you need to do one more thing: keep the battery power below 20% once every two weeks to maintain battery health. First of all, we need to know that lithium battery is a very troublesome battery. If you keep it charged and discharged, it will hang up early; if you keep it discharged to 0%, it will hang up early; even if you don’t let it discharge, it will hang up early. Hang up!

　　Lithium battery due to its own physical characteristics, if the battery does not fully discharge and activate the internal power storage structure for a long time, it will cause the battery to die early. But if you keep him discharging every day, it will also make the battery die. Therefore, in order to solve this contradiction problem, the best way is to keep the battery below 20% (don’t use 0%) every two weeks. Recharge it later, you can maintain the health of the battery well and let him stay with you for a long time!

　　Of course, this is mainly because you often plug in the electrical appliances without unplugging it. If you discharge the battery to less than 20% every day, then there is no need to do this unnecessary thing.

　　To what extent is the battery "dead"?

　　Actually, you can figure it out in two simple steps:

　　The first is that the lithium battery will expand after death. Please note that this is not an explosion. This is just a mechanism to remind you that the battery has been broken. If your iPhone or other devices suddenly "get fat", please change the battery as soon as possible!

　　Second, if the battery is not getting fat, but your phone’s battery power is obviously less than before, then you are advised to send it for repair as soon as you rule out that the power consumption is not caused by your App.