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This 9v battery contained six cells stacked like a layer cake
(lemmy.sdf.org)
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.
Disapointingly, it came wrapped in a branded metal case that you have to pry apart to see the cool layers.
They need to make transparent ones as a special edition xd
They used to think that sort of thing was cool in the 90s.
They were right. I stand by this claim.
I saw one of these at Target the other day in the $5-and-below section. Except it wasn't a full phone, it was a nostalgia grab designed to be a wired "headset" for a cell phone with a headphone jack.