9 Volt Batteries Contain Six AAA Batteries

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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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4 Responses to 9 Volt Batteries Contain Six AAA Batteries

  1. Michael says:

    Well I have learned something new today.

  2. drstrangegun says:

    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.

  3. simon says:

    actually their called AAAA’s or quadrouple A’s and i think that you can actually use them as triple A’s sometimes but i havn’t tried to use them as AAA’s

  4. Jen says:

    NOT TRUE, I TORE ONE OPEN NOT TO FIND ANY KIND OF BATTERIES.