timjcarter9 wrote:
Yeah that is what I thought. I have dual battery capability so will add the deep cycle to the truck. Would only be running max two hours before using the vehicle again to go out and do whatever we do.
Even with a diode or relay battery isolator, running a dual battery system on your truck that way will result in short battery life.
First, you want a deep cycle for the inverter, but a starting battery for the truck. Not a good idea to charge two different types of batteries from the same changer.
Second, even with identical batteries, if they are discharged differently but charge together, neither one will be charged correctly. Usually what happens is the fuller battery is overcharged an "cooks" off "water".
There is no reason why you shouldn't be able to run that same inverter powered from the trailer batteries. That's what I would aim for.
That said, I like your modification. Makes it quick and easy to get 120 VAC for all those other tasks that happen near a tailgate
