If the lithium battery cannot be charged if left for a long time, it can be repaired by charging it normally 3-5 times. If the charger is broken, you can replace it; if it is the battery itself, you can only replace it with a new one.
This is not necessarily a problem with the battery itself. It is very likely that there is a problem with the charger, charging socket and charging socket. You have to check first. If left for a long time, self-discharge will cause the battery to discharge. At that time, the capacity will be lower than normal, making the battery too weak and unable to charge. But lithium batteries are easy to activate. After 3-5 normal charge and discharge cycles, the battery can be activated and restored to its normal capacity.
The reasons why the lithium battery cannotnot be charged:
1. The lithium battery is in an over-discharged state.
That is, the lithium battery is discharged very weakly, in a deep discharge state, and the energy is basically exhausted, so it is as low as the lithium battery cut-off voltage. At present, an activation method can be adopted, but its effectiveness is uncertain.
2. There is a problem with the charger or charging line.
First of all, you need to check if there is any problem with the charger. The method is very simple. You can directly measure the output voltage or connect a load with the corresponding voltage to observe. problem with the circuit, you will have to put some effort into it. After all, it involves When it comes to problems such as circuit hardware, we can directly disassemble and analyze them if necessary.
3. The lithium batteryium will fail after prolonged use.
The possibility of this happening is relatively low, but it cannot be ruled out. You should familiarize yourself with your own battery and replace it after how long it has been used.
4. There is a problem with the battery charging IC or BMS system.
Due to the imbalance of battery cells and other reasons, problems occur in the battery management system, resulting in error of judgment of the management IC and the inability to detect voltage or current.
How to repair lithium batteries used in electric vehicles?
The undervoltage protection function of electric vehicles is to prevent overvoltage Excessive battery consumption while driving electric vehicles. Protective mechanism put in place for the discharge. So whatWhat should I do if the lithium battery cannot be charged after undervoltage?
1. If the lithium battery cannot be charged after undervoltage, the car owner can choose the fast charging method, directly use a high-power charger to charge, or directly go to a fast charging station to store the lithium battery. battery. Lithium battery. Once it is fully charged, use a multimeter to measure the voltage of the lithium battery to see if the voltage has recovered.
2. You can also use lithium batteries of the same specification and use wires to connect two lithium batteries in parallel for repair. However, you need to connect the positive and negative poles when wiring and use the new lithium. Battery to replace the old battery. Discharging can restore voltage. After discharging for a while, you pou use a multimeter to measure and check whether the voltage of the old battery has been successfully restored.
3. Or use a charger with lower power than the original one. Typically, charging takes about half an hour. Using the original charger can effectively restore the battery.
The lithium battery of the electric bike is too discharged. How should I repair it?Generally, it can only be replaced but not repaired. The lithium battery of electric vehicles has a usage limit:
If you feel that you can normally travel the full distance after using it. a period of time, now you can barely drive half of it. If the battery is discharged, the life of the lithium battery is over;
2. If you remove the battery of an electric car and notice this. the battery inside has swollen, it needs to be replaced;
3. Yous can buy a new battery and install it. The general market price is between 300 and 500. Pay attention to whether it is an old battery. or a new battery.
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Once the lithium battery of the electric bicycle is too discharged, it can no longer be recharged, so you can repair it yourself.
1. Once the electric bicycle lithium battery is over-discharged, it cannot be recharged because the battery capacity liquid is reduced and vulcanized. If it's not serious and only loses power occasionally, you can add a little diluted solution. sulfuric acid or sulfuric acid diluted 1:1.28.
2. Once an electric bike's lithium battery has been over-discharged for a long time, it cannot be recharged. If it loses power for a long time, the battery will be seriously vulcanized. the battery needs to be replaced.
Detailed information
How to properly maintain the battery:
1. From the time the battery leaves the factory to the time it is used. is installed in the car and then in your hands A rollover process During the rollover period, the battery will have insufficient capacity due to self-discharge. Therefore, the battery should be charged with a built-in charger until it is sufficient.
2. If you go on a business trip for a long time, the battery should be fully charged before storage, and the battery should be recharged once a month in the future to prevent it from being damaged by sulfate plate due to long-term storage of battery power loss may lead to capacity reduction or even disposal.
3. When using electric vehiclesIn summer, you should pay attention to the following points:
Avoid exposure to the scorching sun, and charging in high temperature environments is strictly prohibited.
Avoid charging immediately after driving in high temperatures to prevent the charging time from being too long (normally around 8 hours).
If the power box becomes hot or the indicator light does not turn green when charging the battery, you should promptly go to the battery store or after-sales service point of our company for inspection and maintenance of the battery or charger. .
Baidu Encyclopedia-Electric Vehicle Battery