The 18650 battery pack has basically become a standard battery specification, but one problem that is easy to encounter when using it is that there will be loss. In short, it is broken, so encounter this. How to fix the situation?
Generally, 18650 lithium batteries will use parallel connection to increase the capacity, that is, through several battery combinations, so that the battery capacity can be improved. In general, when electric vehicles, laptop batteries, etc. are used, several batteries are connected in series and the voltage is increased to 36V48v72V, etc., but when used, it is easy to appear one or two batteries. More, just like the short board principle of wooden barrels, it will naturally affect the capacity of the overall battery pack. In this case, we need to replace this battery, in order to better improve the battery life, then, what are the common problems in the use of 18650 lithium battery?
1, Battery wear detection
If there is damage, there will be a situation where the battery voltage does not go up and the capacity is reduced. We can directly measure with the voltmeter when performing the test. If the voltage on both sides of the battery pack is lower than 2.7V, Or if the voltage is not detected at all, it means that it is damaged.
If the battery voltage is lower than 2.7V, the repair we can do is to charge the battery with the charger (4.2V). After about 10 minutes, if there is a voltage rise, we need to do Just continue to charge it, and then fill the voltage after the power is full.
If the full-voltage is 4.2V, it means the battery is normal. The main reason is that it consumes too much power during the last use, which causes the battery to be completely cut off. If the full voltage is much lower than the 4.2V value, it means our battery is damaged. If you have been using it for a long time, you can replace this battery in time, otherwise there is no other way to fix it.
2, Battery pack repair
The 18650 lithium battery pack is easy to be damaged because one or two of the batteries are damaged, and the entire battery pack cannot be used. At this time, what we need to do is to test the voltage and capacity of each battery. Whether there is voltage or voltage is severely low, and there is a large gap in capacity. When the battery is detected, we can replace it. However, when replacing it, it is necessary to change the capacity. A battery with similar internal resistance.
Generally speaking, after replacement, the life of the lithium battery pack is greatly improved, which is a more common method and a more cost-effective method.
18650 lithium battery has a lot of precautions when it is used. We must pay attention to the protection board. At the same time, we must also pay attention to limit the occurrence of overcharge, over discharge, short circuit, etc., so that we can do it. The life of the lithium battery pack is greatly improved. Lithium batteries should not be short-circuited. We must pay special attention when testing. When charging, we must pay attention to the fact that it is not possible to exceed the rated voltage and current. In addition, we must also grasp the charging time and cannot charge too long. time.
The above is the solution to the problem of 18650 lithium battery, I hope to help everyone. If you have a friend with a lithium battery pack, you can also contact us. We are a 3000mAh Li-ion battery manufacturer, we provide long life 18650 battery, if you have any needs, please contact us.