What Should I Do If The 18650 Lithium Battery Cannot Be Charged?

The 18650 lithium battery has a wide range of applications. In use, it is a common problem that the 18650 lithium battery cannot be charged, and it is also a more troublesome problem that often plagues users. So what should I do if the 18650 lithium battery cannot be charged, and what is the reason why the 18650 lithium battery cannot be charged? Let's discuss it together.

1. Reasons why 18650 lithium battery cannot be charged

1. The internal charging circuit is faulty and cannot be charged normally.

2. There is an internal failure of the 18650 lithium battery.

3. The battery electrode is dirty and the contact resistance is too large, causing the voltage drop to be too large. 

When charging, the host is considered to be full and the charging is stopped;

18650 battery cannot be charged to the solution:

1. The charger interface is aging or the charger itself is damaged. Replace with a new charger for testing.

2. There is a problem with the quality of the charging line. Replace with new pipeline.

3. The metal in the charge hole is oxidized, resulting in poor contact, which is a hardware failure and requires detailed maintenance after sales. The battery itself has been exhausted or damaged, directly replace the battery.

Principle of 18650 lithium battery repair:

Repair principles 1. Long-term use of lithium batteries will cause a certain degree of oxidation on the metal surface, resulting in poor contact between the mobile phone battery and the mobile phone. The lithium battery has a shorter use time, and the use of rubber sassafras or other cleaning tools can remove the rusty material on the surface. The battery continues to contact the phone. Act better.

Repair principle 2. The deep discharge of the mobile phone is to achieve deeper recharging by depleting the internal electric energy, which requires some non-traditional methods. Find a way to connect the phone to a small 1.5 volt light bulb. The electricity inside the lithium battery will be transferred to the small bulb until all the lights are on. "The mobile phone needs to slowly drain the power through a lower voltage. Normally, if the connected voltage of the mobile phone is lower than 3.6 volts, the mobile phone will automatically shut down. "Charging, the battery can last longer.

Repair principle 3. Low temperature can change the electrolyte of the lithium battery and promote the chemical reaction of the newly frozen battery. The use of lithium batteries is actually a charge and discharge process. During this period, the negative and positive charges in the battery collide with each other. The reason why batteries are becoming more and more impractical is that at normal room temperature, the internal energy of electrons is relatively large, so the battery is in an active state and leaks relatively frequently. When a lithium battery is placed in a low temperature environment, the microstructure of the lithium film and electrolyte on the surface of the lithium battery and the interface between the lithium battery and the lithium battery change significantly, making the battery inactive and reducing leakage current. So after charging, the standby time of the phone will increase.

The cycle life of lithium batteries is about 600 times. If charged repeatedly, the thermal movement of the molecules will gradually destroy the internal arrangement and structure of the molecules, and the storage charge efficiency will gradually decrease. The "freezing" process can easily damage the original internal structure of the battery, and the charging capacity may be improved in a short time, but long-term use may not be effective. Once the microstructure of the lithium battery is destroyed, it is impossible to fully recover. Long-term use of this method will accelerate the loss of mobile phone batteries.

Repair method of 18650 lithium battery:

1. After the battery is fully used, remove the battery and use the temperature for processing. When the temperature is unstable, the battery can greatly shorten the use time. Because the battery has no electricity, a large part of the lithium ion has memory, so it can be part of it in winter The battery is released outside for a while, and then returned to the house.

2. Another method is to remove the battery and put it aside for about a week, so the power consumption will be slow. It needs to be completely consumed by the machine first. Then make full use of it. It is estimated that your current charging time must be very short. When it is full, it will be cut off, and then repeated several times, it must be effective.