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Date:         Wed, 21 Feb 2007 21:26:46 -0700
Reply-To:     David Etter <detter@MAIL.AURACOM.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Etter <detter@MAIL.AURACOM.COM>
Subject:      Re: was fav 12 V acc, now 2nd battery relay system
In-Reply-To:  <45DC8E49.32117.1955362@john.cook58.verizon.net>
Content-type: text/plain; charset=us-ascii; format=flowed

The loss of potential across the diode is negligible. I still get up to 13.7 volts on my aux. read directly off the posts and it is monitored continuously. I get 14.2 volts simultaneously on the main. So yes there is loss , but so what, my aux. is a AGM and float levels are to be less anyway. David

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>High current diodes are great, in theory, and will keep current flowing in the >correct direction. But they have a problem when it comes to 12V multi-battery >charging systems. That is, the forward voltage drop will likely be over a >volt, depending upon actual current. How do you compensate for that? > >//Jack > > >Date sent: Wed, 21 Feb 2007 18:49:34 -0700 >From: David Etter <detter@MAIL.AURACOM.COM> > >> If the main battery was depleted, having my aux. battery on a 10ga. >> wire from the alternator with an inline 50amp diode prevents the aux >> battery backing up into the main battery through the alternator >> connection. Thus you will not ruin the aux. battery attempting to >> equalize the depleted Main.


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