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<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=356481615-27032007>Chuck,</SPAN></FONT></DIV>
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class=356481615-27032007></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=356481615-27032007>You are correct - 9V batteries are short on current
capacity, which is precisely why I need to use them. There's more to the story.
The circuit I'm building has to be mounted in an intrinsically safe area, so I
have to limit the total power capacity of the batteries.</SPAN></FONT></DIV>
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<P><SPAN lang=en-us><FONT face="Arial Black" color=#800000
size=2>Rick</FONT></SPAN></P>
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<FONT face=Tahoma size=2><B>From:</B> dprglist-bounces@dprg.org
[mailto:dprglist-bounces@dprg.org] <B>On Behalf Of </B>Chuck
McManis<BR><B>Sent:</B> Monday, March 26, 2007 3:56 PM<BR><B>To:</B>
dprglist@dprg.org<BR><B>Subject:</B> [DPRG] Re: 9 volt batteries in
parallel<BR></FONT><BR></DIV>
<DIV></DIV>Given the energy density of 9V batteries and their internal
resistance, ganging them up in parallel is generally a waste of time (by which I
mean a different solution will solve your problem within design requirements)
<BR><BR>8 x Sub-C NMh batteries can give you 9.6v at up to 35 amps in a package
that is comparable in size volumetrically to about 6 or so 9V batteries in
parallel. <BR><BR>3x Lithium (9v nearly exactly) will give you better current
than alkaline 9v (and even NiCd 9v) with less volume than 3 9V batteries in
parallel. <BR><BR>--Chuck<BR><BR></BODY></HTML>