The batteries need to be connected together - and to the RV load/charger.
For 2 12v batteries, they should be connect positive to positive and negative to negative (parallel connection)
The leads to the RV then connect to the batteries (ideally positive leads to one battery and negative to the other, but any combination will work.)
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Greg
Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)
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