Matt Mc_Carthy wrote in a message to TOM WALKER:

 MMC> 25 Jun 2005, 15:42, TOM WALKER (1:123/140), wrote to ROY J.
 MMC> TELLASON: 

 MMC> Hi TOM.

 RJT>>And then there's one that's roughly the same size as the N cell 
 RJT>>but puts ou 12V!

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

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

 MMC> Thanks for the mental 'wake up'!   :-))

There were batteries for some "dog collar" applications that were
like this, assorted voltages and we used to find substitutes like that, 
take a stack of smaller cells and a bit of heatshrink...

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