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Here's how the conventional lead-acid liquid cell car battery works.

The purpose of a car battery is to provide electricity to start the engine, spark for ignition and to power the lighting and electrical systems on the car. Once the car is started, the alternator takes over major electrical duties by keeping the battery topped off at full charge.

The battery is comprised of 6 cells, each of which have 8 plates inside. Four of the lead plates are positively charged, and are coated in a lead paste, and the other four are negatively charged and are coated with lead oxide paste. The plates are interlined with each, though protected from touching each other, separated by their own individual pouches.

The entire lead-plate assembly is encased in sulfuric acid, which provides sulfate for the lead and lead oxide to react to. The result is the emission of free electronics, which flow through each plate causing a current. The flow of electrons create electrical energy when a resistance or load is placed across the battery's terminal.

In this video a Type 24F battery is safely drained, neutralized, cut open and examined. The plastic top is plastic welded on, with factory fill ports at the top. With the top ground off, the 6 individual cells can be seen, with a lead conductor wiring all the negative plates, and another wiring all the positive plates together, leading out to the battery lugs or terminals.

Safety warning: Use protective equipment when cutting open batteries. Sulfuric acid is extremely corrosive to skin and other objects. Have baking soda and water nearby to neutralize any spills and work outdoors to vent harmful gases that may evaporate from the solution. Lead is also very poisonous, use gloves and a toothbrush when handling.


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