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lead acid battery

There are various parts included in a lead-acid battery. The lead-acid battery suppliers follow the proper construction and work frame to make every unit of a lead-acid battery.

Similar to lead acid, UPS battery also comprises of multiple distinct units that are used by UPS battery suppliers in China. However, here, we are talking about lead acid batteries. The following components show the construction of a lead-acid battery:


The lead-acid batteries container is made of glass, lead-lined wood, ebonite, bituminous hard rubber, ceramic materials, or shaped plastics, and is seated at the top to prevent electrolyte discharge. There are four ribs at the bottom of the container, two of which support the positive plate and the others support the negative plate.


The lead-acid cell plate comes in a variety of shapes and sizes, but they all have a grid constructed of lead and active material. The grid is necessary for carrying electric current and evenly dispersing it across the active material. The active material will loosen and fall out if the current is not dispersed evenly.

Active material:

The active material of the cell is the substance that participates actively in a chemical reaction while charging or discharging. The active ingredients in lead-acid are:

  • Lead peroxide forms the positive active material.
  • Sponge lead forms the negative active material.
  • Dilute sulphuric acid is used as an electrolyte.


The separators are made up of chemically treated Leadwood, porous rubbers, or mats of glass fiber. They are a thin sheet of non-conducting material, and they are placed between the positive and negative. They are grooved from one side vertically and are smooth from the other side.

Battery terminals:

The positive and negative are the two battery terminals. The diameter of the positive terminal is 17.5 mm, which is larger than the negative terminal of 16 mm diameter.

Working of the lead-acid battery:

The sulphuric acid dissolves, then their molecules break into positive hydrogen ions and negative sulphate ions. They can move freely. When two electrodes are submerged and connected to DC, the positively charged ions move towards electrodes and connect to the negative terminal and negatively charged ions move towards electrodes and connect to the positive terminal.

Each hydrogen ion takes one electron from the cathode, and each sulphate ion absorbs two negative ions from the anodes, forming sulfuric and hydrogen acid when they combine with water.

The oxygen created by the equation above reacts with the lead oxide to make lead peroxide (PbO2.) As a result, while the lead cathode remains lead during charging, the lead anode is transformed into lead peroxide, which has a chocolate color.

If the DC supply is disconnected and the voltmeter is attached between the electrodes, the potential difference between them will be displayed. If the electrodes are connected by wire, current will flow from the positive plate to the negative plate via an external circuit, indicating that the cell can supply electrical energy.

Mathew Richard
Mathew Richard
Mathew Richard is a business professional and loves to express his academic and practical knowledge through blog writing. He specializes in writing about various aspects of the B2B marketplace. He also reads and pens on product manufacturing.

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