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Among them, the active substance of the positive electrode plate is lead dioxide powder, which looks a bit brown after overflowing with electricity.

The active material of the negative electrode plate is sponge like lead powder, which becomes a gray color of metallic lead after overflowing with electricity.

After discharging, the secondary boards are all gray white.

During discharge: the positive electrode plate converts lead dioxide into lead sulfate, and the hydrogen ions in the acid are converted into electrons and water.

The lead powder on the negative electrode plate is also converted into lead sulfate, and the sulfate ion loses electrons and appears in the negative electrode.

Electrons generate current in the external circuit.

When charging: Contrary to the above process, lead sulfate is converted into lead dioxide and pure lead with different energy states.

This is the principle of lead-acid batteries. To make it, just purchase the above materials and it will be fine. I think all you need to know is to understand, and if you want it, it's best to buy and save time!

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