Originally Posted by f1100turbo
It's very uncommon to get two batteries unless you specify and then you'll pay for additional including extra wiring.
Did you disconnect battery since delivery?
If your unit isn't plugged in while not in use parasitic draws will run battery dead unless disconnected.
We brought home the trailer friday night and it was immediately plugged in until we unhooked sunday night and left, the campsite was 45 minutes away and a little after 2 hours all the lights had dimmed etc.
The initial setup with jacks and tongue and slide all was performed with the trailer connected to the truck.
I have been talking with Rick @ Prime Time and he is checking to see if we should have gotten two batteries.
The dual purpose battery is a definitive issue that will have to be fixed as we want a deep cycle.