What is overcharging and how does it affect battery performance?
Overcharge refers to the behavior of the battery to continue charging after a certain charging process is fully charged.
Since the negative electrode capacity is higher than the positive electrode capacity at the time of design, the gas generated by the positive electrode is permeable to the cadmium generated by the negative electrode through the separator paper. 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 generated oxygen is too late to be consumed, which may cause the internal pressure to rise, the battery to deform, and the liquid to leak. And other undesirable phenomena. At the same time, its electrical performance will be significantly reduced.