No Battery Power to Camper

Generally, the house batteries have to be turned on, for the converter to charge them. With the batteries dead, they cannot operate the house battery relay. If the house battery switch by the door was left off, it is still off, even if you attempt to turn it on, it will not, without power from the batteries. (the relay stays in whatever position it was last in). You may need to use a portable automobile type charger to get the batteries charged up, and even some auto chargers require that the batteries have some juice left in them, for the charger to charge up the battery.

There is a very good possibility that the batteries are no good now that they have been killed completely, and even if they do recharge, they will have a much shorter lifespan and not hold a charge as well as before.

Charles