Vanagon EuroVan
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (February 2010, week 2)Back to main VANAGON pageJoin or leave VANAGON (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Wed, 10 Feb 2010 17:42:50 -0500
Reply-To:     Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject:      Re: CONFUSION
Comments: To: Arkady Mirvis <arkadymirvis@GMAIL.COM>
In-Reply-To:  <9E960C65C6A64A67ACCB3B42327F4888@Guenther>
Content-Type: text/plain; charset="US-ASCII"

Ark, Luckily you had the fuse there so as to not melt a bunch of wiring. Yes at engine start both batteries will try to support the 200-300 amp starter load. You have a have to have a method of isolation and if the starter can draw off both batteries then all the wiring and devices has to be up to the task. If using a relay it has to be disabled during cranking.

Dennis

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Arkady Mirvis Sent: Wednesday, February 10, 2010 2:24 AM To: vanagon@GERRY.VANAGON.COM Subject: CONFUSION

I confronted a situation I need help to understand.

The main DIEHARD INTERNATIONAL battery was purchased April 2007. In autumn of 2009 I placed under the Westy's rear seat DIEHARD battery, bought April 2002 and previously used in diesel 1991 Jetta with no problems to be an aux. battery. AWG 10 copper wire connected the aux. battery to the alternator via 30 amp. fuse. I didn't install battery separator. Routine checking a month ago discovered the fuse being blown. I replaced the fuse. A week ago I found the fuse being blown again. The only heavy wire is the one connecting starter to the main battery. In my set up the aux. battery is connected to main battery's positive post via alternator terminal and the wire from the terminal to the positive post. I suspect that the fuse blows because at engine start the starter pulls heavy current from the aux. battery. I have no means to measure the current ( amps ) flow at engine start. Any thoughts why the 30 amps fuse blows? Any suggestions on the best aux. battery set up. Thanks in advance. Ark


Back to: Top of message | Previous page | Main VANAGON page

Please note - During the past 17 years of operation, several gigabytes of Vanagon mail messages have been archived. Searching the entire collection will take up to five minutes to complete. Please be patient!


Return to the archives @ gerry.vanagon.com


The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.

Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.