Why can't the 18650 lithium battery be charged? How to deal with it?

The 18650 lithium battery is a more commonly used lithium battery in electronic products, and is often used as a battery in the battery of a notebook computer. When we use it, we find that sometimes the 18650 lithium battery cannot be charged. Let's break down the reason. 1. The electrode contacts of the battery are dirty, the contact resistance is too large, and the voltage drop is too large. The host thinks that it has overflowed during charging and stops charging; 2. The internal charging circuit fails and cannot be charged normally; the 3.18650 lithium battery has an internal failure. 18650 battery can not be charged processing method 1, the charger interface is aging or the charger itself is damaged, replace with a new charger to detect. 2. The metal of the charging hole is oxidized to cause poor contact, which is a hardware failure. Contact the after-sales service for specific testing and maintenance. 3. There is a problem with the quality of the charging cable. Replace with a new one. 4. The battery life is exhausted or damaged, just replace the battery straight. 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: What are the charging management chips for lithium iron phosphate batteries?