Low voltage charging, use a charger with lower voltage than the original one. When the battery is charged to 20%, the voltage will return to the value, then replace it with the original charger. .
Charging a single battery, charging each individual battery in the battery pack, but pay attention to the charger voltage to be consistent with the single battery. This method restores the rechargeable consumption of the battery. The time is longer.
Precautions for using lithium batteries
What should be noted when using lithium batteries is that the battery will enter a dormant state after being left for a period of time, which will cause self-discharge. The battery is running out of power. At this time, the capacity is lower than normal, making the battery too weak and unable to charge.
Due to the characteristicslithium batteries themselves, lithium batteries have almost no memory effect. Therefore, the new lithium batteries found in users' cell phones do not require special methods and equipment during the activation process.
How to enable cell phone battery hibernation?
1. In this case, the battery has not been used for a long time and has entered a dormant state. A regular charge is useless. You can only remove the battery and activate it with high voltage current. This is relatively technical work. Please don't try it without permission. You need to send it to a better cell phone repair shop. If you have the equipment, you can also activate it directly.
2. If you are at home, you can try switching to a charger with 5V output current and light voltagegreater than 2A, and connect the data cable to activate it. However, please note that. Once the charging sign appears on the screen, you should immediately replace it with the original charger to charge.
Detailed information:
For lithium batteries that have not been used for various reasons for a long time, the voltage will gradually decrease due to self-discharge when the voltage is lower than the minimum threshold voltage defined by. the lithium battery protection board (generally (lithium battery ranges from 2.5V to 3.0V), the output power will be automatically cut off. At present, a multimeter cannot measure the voltage outside the lithium battery and a cell phone or universal charger cannot be used to charge it.This is called battery hibernation.
Solution
Charge with a charger slightly higher than the normal charging voltage of the cell phone, perform strong activation, repair and wake up the lithium battery which is sleeping due to excessive self-discharge. .
Baidu Encyclopedia - Battery Hibernation
For a long time, people who use mobile phones have misunderstood that as long as the mobile phone cannot be charged, if there is no electricity, then you think the phone is broken, or the phone charger is broken, or the charging cable is broken , and you buy either a charger or a charging cable. , after working for a long time, the phone is still not repaired!
That's not the saddest part. The sad thing is that good phones are used like bad phones to be repaired. In addition, the boOur phones are sold as bad phones and are subject to abuse. are there many things like this? I dare say it happens every day It happens!
Actually, sometimes the mobile phone cannot be charged, which is not necessarily an external configuration problem. In many cases this is due to battery hibernation if the mobile phone cannot be charged and is unresponsive. turned on, should the battery be put into hibernation? This is not necessarily true. If your phone cannot be turned on, you can try to follow my activation method. Maybe your phone will light up. Either way, it's free to try!
What are the general characteristics of a sleeping mobile phone? First of all, your mobile phone has not been disassembled or repaired, has not been exposed to water or been bumped. Suddenly the mobile phone turns off. hibernation? To speak franklyent, this is caused by playing all the video games on your mobile phone until it turns off automatically. After the mobile phone is asleep, you cannot charge the mobile phone normally via the mobile phone charger! Of course, not all cell phone models sleep. It also depends on the model. The cell phones most prone to this type of breakdown are second-hand cell phones!
How to activate it? It is necessary to disassemble and activate the mobile phone. First, disassemble the mobile phone, remove the built-in battery of the mobile phone, and expose the positive and negative terminals. Then find an old fashioned universal charger, connect positive. and the negative terminals of the two-wire charger, and connect the wires separately two clips, then fix them with the exposed positive and negative poles of the built-in battery, plug it in and turn it on, the battery will be activatedand after. for two hours, just put the battery back into the phone in the same way and use your phone charger to charge the phone. Charge it normally!
Isn't it very simple? If you are interested in mobile phone repair, you can follow Tao Xiuxia and watch each of his videos carefully, I believe you will benefit!