Axecollector took apart a 9 volt batter.
I remember thinking at one point that a 9 volt battery was just a small box full of acid or something, but as you can clearly see, this one is is just constructed of six smaller 1.5 volt cells wired in series.
I’ve been collecting disclaimers lately and he’s got a good one!
Disclaimer: I am not an electrician. There really isn’t any easy way to hurt yourself doing this that I can think of, but I guess someone out there could probably find one anyway! This article is not intended as professional advice, and I take no responsibility for any harm this information may cause you now or in the future. There. I said it. Now go rip apart some 9 volts and see for yourself! [via] - Link