@astrid AAAA - Also a battery

9V batteries contain 6 AAAA batteries

@kwayk42 that little factoid about 9V batteries (usually) being nothing more than six AAAA batteries in a trench coat will never not be mind blowing to me.

@astrid

@sysop408 @kwayk42

Huh. So 9V batteries are _actually_ batteries!

@mattdm yeah that brings up so many questions. So few things use AAAA batteries that most people don't even know they exist.

On the other hand, 9V batteries aren't at all uncommon yet manufacturers will often make 6 AAAA batteries first and then use those to make a single 9V? Wouldn't it be more efficient to make the 9V directly and make fewer AAAA's?

This has been bugging me ever since I learned this.

@kwayk42

@sysop408 @kwayk42

Apparently this: https://onlinelibrary.wiley.com/doi/10.1002/9781119163824.ch1

(Says a PBS article I found.)

@mattdm I'm not sure what I was supposed to be seeing in that article. Would it make more sense if I had a subscription to read the full article?

@kwayk42