Mildly Interesting

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

submitted 11 months ago* (last edited 11 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] 6 points 11 months ago

The voltage of batteries in series adds and 1.5V * 6 = 9V, that's why.