What device even uses this??
this post was submitted on 12 Apr 2024
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I took apart a lot of batteries as a kid. The nine volts never had batteries like this inside them.
The carbon-zinc ones never do, but the alkaline ones do, the ones I opened, anyways ( a few decades ago )
some do, i have dissasembled some of them to look like this. not all of them though
Since seeing this picture I have disassembled about 50 nine volts looking for this and have found about 3. Some full of coin cells too.
Edit: I should say it was years ago I first saw this picture. I haven't disassembled 50 batteries in the last 2 minutes
I reject your edit and substitute the original assumption
How many batteries can you disassemble in 2 minutes? I'm starting the timer.... NOW! Go!
Some have stacked flat cells IIRC.