The voltage regulator does just that, maintain a fixed voltage. Typical is ~13.8. The batteries current draw is based on its charge acceptance which will be a function of state of charge, (SOC), and temperature. The other limit will be the wiring resistance of the charging path. Typically, a group 41 will draw about 20 amp/hours from 20% to 80% state of charge. Then it will taper down to as little as 2 amps. Dennis
-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Gerald Masar Sent: Monday, March 27, 2006 1:09 AM To: vanagon@GERRY.VANAGON.COM Subject: charge rate at main & aux batt Just finished installing aux battery in my '90 Westy, using regular group 41 and the existing relay system. Everything is up and running fine. Recent discussions about relays, isolators, separators, over or under-charging, etc., makes me ask this question.: Does the voltage regulator sense when the main battery is fully charged and slow down the rate or something, and if so, what happens at the aux battery if it was still at a lower state of charge? Hope this makes sense, and thanks. Jerry in Arizona |
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