Over-charge, that is, the battery charging current is greater than the battery acceptance current, and the overcharging is mainly the side reaction of the electrolytic water. Since the battery positive electrode produces oxygen to the negative electrode, the amount of oxygen recombination, heat, so that the amount of charge is actually converted to heat to heat the battery temperature Elevation, no control, will cause a large amount of loss of water, severely deformation, etc. Under the inclusion, it is often unsettled, and it will gradually form a thick hard sulfate, which is almost unsolveled, that is, "irreversible sulfate", using ordinary methods, unable to charge electricity Therefore, the capacity will be rapidly attenuated once a time.
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