Battery Barney Tips – AA +Cardboard=C Do You Understand That Equation?

AA batteries are, by far, the most common alkaline cells, and that’s the size you most likely have lying in your junk drawer.

Not that many devices use C cells, so they are much less likely to be lurking in the corner of that drawer.

AA’s and C’s are the same height and the same voltage.

A clever Lifehacker tip shows you how to  wrap a little cardboard around a AA battery so it will fit into the slot intended for a C cell.