Causes of 18650 battery not charging

What should I do if the 18650 battery cannot be charged? There are many cases where the 18650 battery cannot be charged into the battery. For different problems, corresponding repair methods should be taken to solve the problem of the 18650 battery cannot be charged into the battery. So when the battery is not charged, what are the solutions? 18650 lithium battery parameter 1.18650 external reasons for battery charging failure (1) battery charger problem 1) charger failure, that is, after a period of use, the charger is damaged due to failure , The charger cannot charge normally. In this case, it is recommended to replace the charger. 2) The charger does not match. It may be that the current and voltage supplied by the charger are too low to charge the battery; or the voltage is too high and the current is too large, which damages the battery during charging and makes it impossible to charge. (2) Environmental factors affect battery charging 1) The charging environment temperature is too low. The 18650 battery has low temperature charging and discharging limitations, which may be due to the low temperature of the charging environment, which leads to charging failure. In this way, the battery can be charged within its specified charging temperature range, which is generally ok. If not, it is estimated that the battery has been used for a long time at a too low temperature, causing battery problems. So we must replace the battery. 2) The temperature of the charging environment is too high. Generally, the 18650 battery temperature protection mechanism can be caused by high temperature protection, resulting in failure to charge. You can set the battery's allowable charging temperature range. If this is not the case, it may be because the battery is operated at high temperature and the diaphragm is broken The battery or other chemical reaction makes the battery unusable. We have to change the battery. 3) The charging environment humidity is too high, causing circuit failure or short circuit, now please dry the battery and charger to charge, if not, it is necessary to check whether the charger is damaged or the battery is damaged, and replace accordingly That's it. 2. The 18650 battery itself 1) No matter which manufacturer processes the battery, there will be self-discharge. When the battery is used for a certain period of time, the self-discharge will become larger, which will gradually cause the internal short circuit of the battery. Usually, the battery separator is bad. In this way, if you know the knowledge of the battery, you can replace the defective battery. Not recommended for non-professionals. 2) When the battery is packaged, the consistency error of the battery is too large. At the beginning of use, the problem is not serious, but after a certain number of cycles, this error will cause the performance of the battery, and eventually most or all of it may be scrapped. This can only be replaced by batteries. 3) The battery tabs are welded off. There are two reasons for this. One is the welding of single or multiple battery tabs accidentally caused during use. The other is the battery processed by the battery manufacturer. In the process of using the battery, a large current can be discharged instantaneously, which may cause poor welding of the battery tabs or rupture of the battery diaphragm, resulting in an open circuit or a short circuit. The layman recommends buying new batteries. 4) The failure of the battery protection board may be caused by careless use, resulting in circuit failure or software failure of the battery protection board. Of course, if you are a professional and have corresponding maintenance tools, you can also buy a suitable battery protection board to replace it. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What is the maximum capacity of the 18650 battery?