From: John Larkin
Subject: Re: Reducing contact resistance for low volt use?
Date: Wed, 11 Dec 2002 08:21:02 -0800
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On Wed, 11 Dec 2002 05:37:37 GMT, jmuchow@SPAMMENOTcamlight.com (John
>>>>there's lots of stuff like this...
>Thanks for the links John. It seems that I was using the wrong search
>terms when I went looking for the stuff. The Chemtronics CircuitWorks
>Silver Conductive Grease looks good.
>I also received a tip about Conducto-Lube, but their web site had no
>tech info on the stuff other than the MSDS which stated that the stuff
>was 65%-75% Silver and 25%-35% Mineral Oil. No conductivity data.
>The Chemtronics Silver Conductive Grease MSDS states that Silver is
>55%-85% and Silicone Oil as 15%-45%.
>So, one could be better than the other, no way to know. I guess that
>they are about the same, more or less. If I wanted to, I could
>probably separate some of the oil (let it settle?) from the silver to
>decrease the resistance...but only up to a certain point. Might be
>best just to use it as is.
>The carbon-filled greases also seem to be pretty good but the silver
>ones have lower spec'd resistances so I'll probably go with them.
>Thanks again everyone for your tips, links, and suggestions!
>John "I gotta get better at using those search engines" Muchow
But you should realize that 'conductive' grease and epoxy are, in
bulk, not very conductive. It's best to make a solid metal contact
that fits the battery terminals well, and fill in the small remaining
gap with stuff like this.
Hey, how about a bundle of pogo pins? I just bought a three *pound*
bag of pogos on ebay... several thousand for about a penny each.