Power/electrical question regarding running refrigerator

Hey guys I am working on my build and plan on getting a Dometic CFX3 95DZ refrigerator. On my 2021 TRD Pro I have the 120V/400W-deck-mounted AC power outlet in the bed. My thought is to connect the refrigerator to that, but I am thinking about installing a second battery in the engine compartment. I would like to have the outlet in the bed run the refrigerator off the second battery, but wanted to get some ideas from people who actually know what they are doing.

What would be the right/best way to run this? We are going to be camping for multiple days without power (and without running the TRD) so I need a solution that would accomplish a trip of this duration.

Thanks guys.

 

Okay I am going to close this thread since I can see now that this topic has been discussed a zillion times.

 

Mods please close this thread. I don't see any tools to do that.