Originally Posted by Papaj71
My coach batteries are dead. Is it normal to have to disconnect the cables to even get the charger to start? I have one of the batteries charging now.
Were the house batteries disconnected during storage or can you hook up shore power during storage? Did you measure the batteries at their terminals or somewhere else in the circuit? House batteries will be drawn down by phantom drains like radio presets, detectors, thermostat, etc. Even a battery disconnect doesn't 100% prevent drains. With disconnect on, remove battery cable and bridge the gap with an ohmmeter. You'll then know how much is being drained when 'disconnected.'
Disconnecting cables to get the charger to 'start' sounds like a dirty or bad connection somewhere. I'd remove, clean, and re-attach each cable, including ground connections.