TOM WALKER wrote in a message to MATT MC_CARTHY:

MM> TW> BUT that WOULD not "By Definitioon" be a
"N" Cell, but simply a
MM> TW> 12 Volt Battery. ALL the cells in the series I am talking about, A,
MM> TW> AA, AAA, AAAA, SC, C, D, F, Super F, G, J, N, 6 all have a nominal
MM> TW> voltatge of 1.2 to 1.5 volts depending on their Chemical Composition.
MM> TW> They are individula Cells. Something with 12 volts, even if it was
MM> TW> close to the N cell size, would not be an "N" CELL.
But a stack of
MM> TW> cells, most likely without any official designations, to make up the
MM> TW> 12 volt stack.

MM>I hate to admit it, but the 'cell factor' went clear over my head for one
MM>little application I have that uses a 12V x 7mm battery that has not been
MM>available for some years.  I can probably 'make' a better one with
MM>a stack o
MM>small lithium cells or 'hearing aid' type alkaline cells, whichever
MM>I can fi
MM>that would fit!

 TW>  That could be posable as there is a mind boggiling assortment of
 TW> smal  cells avaialble. And with a little engunity one might be able
 TW> to build  a suitable 12 volt pack.
 TW> OF course those without somewhat size limitations have it easier .
 TW> I saw an interesting solution to getting a 90 Volt pack for an old
 TW> Farm Radio. It was by snapping Ten 9 volt batteries together.
 TW> Of course it would not last as long as the NO longer avialble
 TW> origional but it would allow you to Demonistrate yuor prized
 TW> posession. 

I remember seeing projects in the old Popular Electronics that used a 90V
battery,  most notably the original "nonsense box" (a set of
astable oscillators using neon bulbs) that the original author potted in
clear acrylic!  I also remember "9V" batteries in other than the
original size, all rectangular but some significantly larger than the
"standard" size.  And then there were all those other voltages, 
22.5,  45,  and 67.5 as well.  I *think* I saw mention of a 135V battery
once.

I'm gonna have to do some digging,  see what info I can come up with.

Interestingly enough,  the 15V,  22.5V,  and 30V units are still out there
and still used in some applications.  Some years back I was working on
garage door opener radios and the transmitters in those used a lot of the
15V ones for one example.

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