Effect of lithium battery over-discharge

If the lithium battery has insufficient charging time and low charging efficiency, it may cause over-discharge. What kind of effect will the battery itself have?

1. After the battery has discharged the internal stored power, after the voltage reaches a certain value, the discharge will continue to cause over-discharge, and the discharge cutoff voltage is usually determined according to the discharge current;

2. 2C-2C discharge is generally set to 1.0V / support, 3C or above, such as 5C or 10C discharge set to 0.8V / support;

3. Battery over-discharge may have catastrophic consequences for the battery, especially high-current over-discharge, or repeated over-discharge on the battery.

In general, over-discharge of high-temperature batteries will increase the internal pressure of the battery, and the reversibility of the positive and negative active materials will be destroyed. Even if the charging is only partially restored, the capacity will be significantly attenuated.

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