What is the reason why lithium batteries cannot be charged
2025-06-03
There are many types of lithium batteries. If they are divided into two categories, they are lithium metal batteries and lithium-ion batteries. The charging methods basically include constant current charging, constant voltage charging, pulse charging, etc. Different charging methods are used at different stages. If you cannot charge, there are only a few situations:
1. The lithium battery is in an over-discharge state
That is to say, the lithium battery is discharged very low, in a deep discharge state, and the power is basically used up, so low that it is as low as the cut-off voltage of the lithium battery. At this time, you can use the activation method, but this may not be effective.
2. The charger or charger There is a problem with the power circuit
First, you should check whether there is a problem with the charger. The method is very simple. Just measure the output voltage or connect a load of the corresponding voltage to observe. As for the problem with the circuit, it will take some effort. After all, it involves circuit hardware and other issues. When necessary, directly disassemble and analyze.
3. The lithium battery has been used for a long time and the battery has failed
The possibility of this happening is relatively small, but it cannot be ruled out. You should be familiar with your own battery and change the battery after a long time of use.
4. There is a problem with the battery charging IC or BMS system
Due to the imbalance of the battery cells and other reasons, the battery management system has problems, which causes the management IC to misjudge and fail to detect voltage or current.
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What to do if lithium batteries cannot be charged
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