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Edited 8 months ago

Why did we all decide on cylinders as the battery shape? with the exception of button cells and the occasional D battery, most consumer batteries are all cylinders. I want something really strange, like a AA battery shaped like a tiny bowling pin, or a lantern battery that's a little mlp figurine with the terminals on the hooves

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@Dio9sys 9-volts are rectangular, tho (but, inside it's two cylinders).

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@hrbrmstr they simply hide the cylinders from the public

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@hrbrmstr (fun fact: unwrapping a 9 volt battery is how you get AAAA batteries for small hobby projects!)

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@Dio9sys I believe because it's two plates separated by electrolyte and then rolled up like a pastry. Basically, the same reason strudels or maki rolls are cylindrical.
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@monsieuricon hmmm, fair, though now I want to make origami out of lithium strips and turn that into batteries

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@Dio9sys Got curious, found this discussion on it. Most boring answer is likely: we were already manufacturing cylinders so it was easiest
https://electronics.stackexchange.com/questions/337176/why-are-lithium-ion-cells-mostly-round

And custom shapes are a manufactory nightmare πŸ˜…

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