Does the lead acid battery have memory effect?

battery memory effect

The battery memory effect refers to the reversible failure of the battery, that is, the performance that can be restored after the battery fails. The battery automatically maintains this specific tendency after being subjected to a specific duty cycle for a long time. For easier understanding, the battery remembers the node of the last charge and discharge, which makes it impossible to break through this node in the future, resulting in decrease in battery capacity.

Since the negative electrode in the traditional process is burning and the cadmium grains are relatively coarse, if the nickel-cadmium batteries are recharged before they are fully discharged, the cadmium grains are prone to agglomerate and form a secondary discharge platform when the battery is discharged.

The battery stores this discharge plateau and uses it as an endpoint for discharge in the next cycle, although the capacity of the battery itself allows the battery to discharge to a lower plateau. The battery will only remember this low capacity during subsequent discharges. Also with every use, any incomplete discharge will deepen this effect, making the battery less capable.

Lead acid battery

The electrodes of the lead acid battery are mainly made of lead and its oxides, and the electrolyte is sulfuric acid solution. In the discharge state, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in the charging state, the main component of the positive and negative electrodes is lead sulfate.

With the development of battery manufacturing technology, lead-acid batteries have developed into lead-acid maintenance-free batteries and gel maintenance-free batteries. There is no need to add electrolyte or distilled water during the use of batteries. It mainly uses the positive electrode to generate oxygen, which can be absorbed at the negative electrode to achieve oxygen circulation, and prevent the reduction of moisture. The concentration of the sulfuric acid solution will continue to decrease during discharging. When the density of the solution drops to 1.18g/ml, it should be stopped and proceed charging.

Does the lead acid battery have memory effect?

If the battery is a nickel-cadmium battery, and it is not fully charged and discharged for a long time, it is easy to leave traces in the battery and reduce the battery capacity. The battery seems to memorize the user's daily charging and discharging range and mode, and it is difficult to change this mode over time, charged or discharged in a large amount will be no longer available.

Lead-acid batterieshave no memory effect. Although lead-acid batteries will have capacity attenuation when they are not used properly, that is vulcanization, not memory effect. And the memory effect and vulcanization coping are not the same. The way to deal with the memory effect is to periodically deep discharge and empty the battery, and the way to deal with vulcanization is to try to fully charge it every time.