Mildly Interesting

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This 9v battery contained six cells stacked like a layer cake (lemmy.sdf.org)

submitted 9 months ago* (last edited 9 months ago) by [email protected] to c/[email protected]

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Picture of a disassembled Duracell 9v battery. Below the terminal assembly is a clear plastic case where you can see six sets of stacked rectangular terminals and fillings.

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[–] [email protected] 1 points 9 months ago

Battery chemistry produces fixed voltages depending on what you use. It depends on where the active components sit on the electronegativity table.

The typical ones are:

Zinc-carbon and alkaline - 1.5 volts per cell.

Lead acid - 2 volts

Nickel Cadmium - 1.2 volts

Nickel Metal Hydride - 1.4 ish.

All the Lithium ion combos - 3.4 to 3.7 volts.