battery

Forgot to mention, try to never run your house batteries down to 12 volts which is "dead". This damages battery innards and shortens useful life severely. A newish healthy battery should be fully charged but not over-charged for adequate performance and useful life. Camping while connected to shore power is best with a standard house battery system. BTW, many/most RV's do not have provision to charge the engine starting battery while connected to shore power. I added a Trik-L-Start device which routes some of the charging current from the converter charger to the engine starting battery. A simple battery maintainer/trickle charger may be used to charge the starting battery if 110vac power is available.