Can I just plug my RV travel trailer’s 30 amp shore power line into an adaptor and into my 120v outlet of my Bluetti? I understand it won’t be enough power for my AC, etc, but just to keep me going if my deep cycle lead acid batteries are low and I don’t want to fire up my generator?
You can as Bluetti admin stated above. However, I would unplug or turn off your RV on board power converter / 12 volt house battery charger since it will try to charge your house batteries which will consume a large amount of power from your Bluetti.