When you are plugged in, dc volts come from converter or inverter charger. And you have power..
However if use/store switch is off the batteries are not connected to the coach or charger and discharge.
If they are down that low, check water levels and charge with a battery charger. Not good to discharge batteries below 50% or 12.2 volts.
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U.S. Coast Guard retired- 1956-1985
Pensacola, Florida
2016 Siesta 24ST
1972 Moto Guzzi Eldorado
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