FAQs about 18650 Lithium Batteries: One-stop Solutions To Difficult Problems

FAQs about 18650 lithium batteries: one-stop solutions to difficult problems

Due to their high energy density and wide application, 18650 lithium batteries have become an indispensable component of modern electronic devices and energy storage systems. However, during use, users may encounter various problems, such as capacity reduction, abnormal charging, heating, etc. In order to help users better understand and use 18650 lithium batteries, this article will provide detailed answers to common questions and provide a one-stop solution.

1. Capacity-related issues

Why is the battery capacity decreasing significantly?

Reason: The battery capacity may decrease due to long-term use, overcharge and over-discharge, high temperature environment or battery aging.

Solution: Avoid overcharge and over-discharge, control the battery operating temperature, and check the battery status regularly. If the battery is seriously aged, it is recommended to replace it with a new battery.

Is it normal that the capacity of the new battery is not as good as the nominal value?

Reason: There may be differences between the battery capacity test conditions and the actual use conditions, resulting in the measured capacity being lower than the nominal value.

Solution: Use a professional battery capacity tester for testing to ensure that the test conditions are consistent with the nominal conditions. If it is still lower than the nominal value, it may be a battery quality problem. It is recommended to contact the supplier.

2. Charging related issues

What should I do if the battery cannot be charged?

Reason: It may be due to battery over-discharge, charger failure, or battery protection board triggering the protection mechanism.

Solution: Try to charge with a low-current charger to check whether the charger is working properly. If it still cannot be charged, it may be that the battery is damaged. It is recommended to replace a new battery.

Is it normal that the battery is seriously heated during charging?

Reason: It is normal for the battery to heat up slightly during charging, but if the heat is serious, it may be due to excessive charging current, increased battery internal resistance, or high ambient temperature.

Solution: Reduce the charging current, check the battery internal resistance, and ensure that the charging environment is well ventilated. If the heating problem persists, it is recommended to stop using it and check the battery status.

3. Discharge related issues

Why is the battery discharge time shorter?

Reason: It may be due to decreased battery capacity, increased internal resistance, or increased device power consumption.

Solution: Check the battery capacity and internal resistance to ensure that the device power consumption is within the rated range of the battery. If the problem persists, it is recommended to replace the battery with a new one.

Is it normal that the voltage drops too quickly when the battery is discharged?

Cause: It is normal for the voltage to drop quickly at the beginning of battery discharge, but if the voltage drops too quickly, it may be due to increased internal resistance of the battery or excessive load.

Solution: Check the internal resistance of the battery and ensure that the load is within the rated range of the battery. If the problem persists, it is recommended to replace the battery with a new one.

IV. Safety-related issues

Can the battery continue to be used if it is swollen and deformed?

Cause: The battery may be swollen and deformed due to overcharge, overdischarge, high temperature or internal short circuit.

Solution: Stop using the swollen and deformed battery immediately and dispose of it properly. Continued use may cause battery leakage, fire or even explosion.

How to deal with battery leakage?

Cause: Battery leakage may be caused by damaged shell, overcharge, overdischarge or internal short circuit.

Solution: Stop using the leaking battery immediately and place it in a safe place. Wipe the leak with a dry cloth to avoid direct skin contact. Hand over the leaking battery to a professional organization for treatment.

V. Storage and maintenance related issues

How to store batteries that are not used for a long time?

Recommendation: Keep the battery power at around 40%-60%, store in a cool and dry environment, avoid high temperature and humidity.

How to extend the battery life?

Recommendation: Avoid overcharging and overdischarging, control the battery operating temperature, check the battery status regularly, and use appropriate chargers and equipment.

VI. Conclusion

There are many common problems with 18650 lithium batteries, but through scientific analysis and correct handling methods, we can effectively solve these problems and ensure the safe use and performance of the battery. I hope that the answers to the common problems provided in this article can help you better understand and use 18650 lithium batteries and provide reliable power guarantee for your devices. If you encounter problems that cannot be solved, it is recommended to consult professionals or contact battery suppliers.