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Old 12-20-2019, 05:11 PM   #1
prndl
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M.O.C. #19630
Two Batteries, One Charger-What switch?

A simple question. I have two 12V batteries.They are connected via a 1-2-All switch. I need a charge switch that will sense the battery that is low and send the charge to it. I had a simple one on my motorhome that cost under $40.
The ones now are mostly for solar charging or for a chassis battery and house battery on separate circuits.

Just a simple automatic switch is all I need. Any suggestions?
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Old 12-20-2019, 08:08 PM   #2
AZ Traveler
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M.O.C. #20477
I would removed your 1-2-all switch and replace it with a simple on off switch. There is no reason to run off a single battery in a trailer. If you run the batteries down you can always connect to shore power or your truck to bring jacks up and slides in.

With that connection you will always recharge both batteries. The 1-2-all switch is for boats or MH where you want to save a battery to start your engine.
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Old 12-20-2019, 08:42 PM   #3
prndl
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M.O.C. #19630
Appreciate the reply but my example was a basic setup. I am running two banks of 6V batteries. Someone made a basic switch that would give the charge to whichever bank was low. I may just charge the low bank during the daytime with the generator, then flip the switch and use the other bank over night. Seems the simplest way.
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