What is overcharging and how does it affect battery performance?

Overcharging refers to the behavior that the batterycontinues to charge after it is fully charged after a certain charging process.
Since the capacity of the negative electrode is higher than that of the positive electrode at the time of design, the gas generated by the positive electrode passes through the separator paper and recombines with the cadmium generated by the negative electrode. Therefore, under normal circumstances, the internal pressure of the battery will not increase significantly, but if the charging current is too large, or the charging time is too long, the oxygen generated will not be consumed in time, which may cause internal pressure to increase, battery deformation, leakage, and other bad phenomena. At the same time, its electrical performance will be significantly reduced.

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