18650 lithium battery group has a protective board, which can control the lithium battery cell to work in the specified working environment without explosion, combustion and other phenomena. 18650 lithium battery is a relatively common lithium battery in electronic products. When using it, it is found that sometimes the 18650 lithium battery cannot be charged. What is the reason?
1. The electrode contacts of the battery are dirty. The contact resistance of is too large, resulting in too large voltage drop. When charging, the host thinks it is full and stops charging;
2. The internal charging circuit is faulty and cannot be charged normally;
3. The internal failure of the 18650 lithium battery is faulty.
18650 Solutions for the battery not charging:
1. The charger interface is aging or the charger itself is damaged, replace it with a new charger for testing.
2. The charging hole metal is oxidized to cause poor contact, which is a hardware failure. It needs to be contacted for after-sales inspection and maintenance.
3. If there is any problem with the charging cable quality, replace it with a new cable.
4. The battery itself has ended or damaged, just replace the battery directly.
The recycling life of lithium batteries is about 600 times. If the charges are too many times, the thermal motion of the molecules will gradually destroy the microstructure of the internal molecular arrangement, and the storage charge efficiency will gradually decrease. "The freezing process can easily destroy the original internal structure of the battery. It may increase the ability to charge in a short period of time, but it may not be effective for long-term use.
18650 lithium battery repair method
1. Take off your battery after using it and use the temperature. The battery will greatly shorten the usage time when the temperature is unstable, because the battery is not electrically active and a considerable part of Lithium ion has memory charge. Use this method to release part of the memory charge. When winter is here, put it outside for a while, and then go to the house.
2. There is another method, remove the battery and put it in the room.
2. There is another method. Remove the battery and put it in the room. About a week, the power will be consumed slowly. You need to use the machine to completely consume the power. Then, then fully charge it. It is estimated that your charging time is definitely very short. After the rush is full, disconnect and then rush again. Repeat it several times. It is absolutely effective.
3. If you measure the 18650 lithium battery pack and the battery has no voltage, there are two situations at this time. One is that the battery is originally good, and it is caused by long-term storage of power. This kind of battery has a certain chance of recovery. Generally, the lithium battery pulse activation instrument (lithium battery charge and discharge instrument) is used to charge the battery multiple times in a short time, which may be repaired.
4. Check the battery capacity, set the multimeter to measure the current passing every hour, and place the two metal rods at the metal end of the positive and negative electrode of the battery.
