| dual 12v house batteries -birchaven [message #269925] |
Sun, 18 January 2015 11:43  |
Joe Weir
Messages: 769
Registered: February 2013
Location: Columbia, SC
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Fellow travelers,
My birch has the 2nd house battery at the back under the closet, with a manual cut off in the bathroom under the medicine cabinet.
The batteries are weeks apart in age with the first one getting charged multiple times due to less than full readings, due to the, at the time, undiscovered dead house battery in the back.
I've read in the forum about the evils of having two 12v batteries in parallel, and wonder if I need to "fix" this arrangement, or let it be.
My worries are the long term battery health, 25' of 40 year old cable connecting the two, and the somewhat sketchy looking cut off switch in the bathroom.
I like the idea of having as much battery capacity as possible, but I know just enough about 12v systems to be dangerous.
Is there a recommended primer on rv 12v systems anyone has found handy. I realize there are a lot of EEs on the list who talk circuits faster than I can understand English, I'm talking about a reference for the less gifted.
Better yet, has anyone pondered this before and come up with an improvement in the design?
76 Birchaven - "Wicked Mistress" - New engine, trans, alum radiator, brakes, Sully airbags, fuel lines, seats, adult beverage center... those Coachmen guys were really thinking about us second hand owners by including that beverage center...
Columbia, SC.
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