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Old 01-20-2012, 10:20 PM   #9
Barb&Tim
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Join Date: Oct 2010
Location: Fayetteville, NC
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Quote:
Originally Posted by Bill View Post
Dave -

I'm not sure why it would be a concern. After all, if you boondock for a night or two on battery-only, then start the car in the morning, the alternator in the car sees the car battery (presumably still well charged) and the trailer battery (considerably discharged), and no one gets upset about that. With a good charging system, the weaker battery simply hogs the charge current until its state of charge comes up to something approximating the stronger battery.

Maybe I'm missing something ...

Bill
I second Bill's thought on this. I see no reason not to use the existing converter with an isolation relay to charge both batteries.

Tim
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