 Size comparison Triple A at bottom, quad A at top, penny at left |  inside of a 9 volt battery |
Monday, January 28, 2008
What is inside a 9 volt battery
The inside of a 9-volt battery contains 6 quadruple A. Some people mistake them for triple A but they are a little to short, but if you take one of the metal tabs and fold it over on itself you can then use the quad A in a device that used triple A batteries.
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