What are the important reasons why lithium-ion batteries cannot be charged?

1. The lithium-ion battery is in an over-discharged state, which means that the lithium-ion battery is discharged very low, in a deep-discharged state, and the power is completely used up, so that it is as low as the cut-off voltage of the lithium-ion battery. At this time, the activation method can be adopted, but This is not necessarily effective; 2. The charger may have a problem with the charging line. First, check whether the charger has a problem. The method is very simple. Just measure the output voltage and investigate the load of the corresponding voltage. As for the line problem, then It takes a bit of effort. When it comes to circuit hardware and other issues, you can directly disassemble and clarify when necessary; 3. Li-ion batteries have been used for a long time, and the environment caused by battery failure is relatively small, but it cannot necessarily be eliminated. The battery itself should be familiar, and the battery should be replaced as long as it takes; 4. The battery charging IC may have problems with the BMS system. The battery management system has problems due to the imbalance of the battery cells, which leads to the misjudgment of the charging IC Cannot detect voltage or current. 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 post: What are the essentials for repairing lithium-ion battery electric vehicles?