Les Jones: 9 Volt Batteries Contain Six AAA Batteries

January 12, 2007

Nifty > 9 Volt Batteries Contain Six AAA Batteries

More things I didn't know: there are six AAA batteries inside a 9 volt battery. Actually, they're AAAA batteries which are smaller diameter, but they'll apparently work in many devices that uses AAA batteries. UPDATE: One person at the link below reported that it damaged his electronics, so reserve this for McGyver-style emergencies. And who doesn't have those?

Hard to believe, but here's a video demonstration. This is definitely going on this year's list of 2,007 things I learned in 2007.

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Comments

Well I have learned something new today.

Posted by: Michael at January 12, 2007

they didn't used to... they used to have 6-7 "prismatic" cells in a stack. When I was a kid I ripped quite a few apart when they died...

Back when I was selling batteries for my soul.. er.. a pittance, AAAA batteries were a new thing, made available for a slew of new pen-sized devices, mostly lasers and little pen-clocks. I bet they just shifted production over when it became cheaper to cram the cases full of these instead of the prismatics.

Posted by: drstrangegun at January 12, 2007