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What Is Affecting The Battery Capacity Of Lead-Acid Batteries?


    The capacity of a lead-acid battery refers to the capacity that can be obtained from the battery under certain discharge conditions.

    The capacity of lead-acid batteries is divided into theoretical capacity, actual capacity, and rated capacity. The theoretical capacity assumes that the active material in the battery can all participate in the reaction when it is discharged. Combined with the reaction equation of the battery and the electrochemical equivalent value of each component, it is calculated according to Faraday's law. The actual capacity refers to the amount of electricity actually released by the battery under certain discharge conditions, which is always lower than the theoretical capacity. The rated capacity is the minimum amount of electricity that the battery should discharge under the specified discharge condition F when the battery is designed and produced.

    Generally speaking, the factors that affect the capacity of lead-acid batteries refer to the influence on the actual capacity of the battery. Because once the total amount of active materials of the battery is determined, the theoretical capacity of the battery is determined, and the rated capacity is also a reaction of the actual capacity. Because whenever the rated capacity is said, the discharge current value must be determined, and the discharge termination voltage is usually agreed upon. And if we talk about the actual discharge capacity of the battery, the factors included are the most comprehensive, including not only the influence on the theoretical capacity but also the influence factors on the rated passenger volume.

    There are many factors affecting the battery capacity, which can be roughly divided into two categories: one is the production process factors, including the number of active substances. Plate thickness, active material porosity. The true surface area of ​​the active substance. The center distance of the plate, the composition of the active material: the second is the use of factors, including the current density of the discharge, the terminal voltage of the power collection, the temperature of the electrolyte, and the density of the electrolyte.