How many mAh or Wh to run a Fridge all night?

Anyone have a ballpark idea how many mAh or Wh it takes to run a fridge all night?

Reason I ask, I have decided instead of running dual batteries I am going to get one of those portable power banks that have 12V, USB, and 120V inverters.
For me, it will be more versatile, especially since I also have a Jeep that I take trips in and can use it in it also.
There are tons of them out there in all sorts of capacities, just trying to get an idea of how large of one I should get.

 

First you nuts if you going run it on just batteries. But my math can be wrong but I'll give it a shot.

A Dometic RM4223 (Just an example) draws 10A @ 12VDC.

So a 10AH battery will provide 1A for 10 Hours or 10A for 1 Hour. So for 24 Hours you theoretically need 240AH and your battery will be toast.

Forgive me if I'm wrong its been a while.

 

Sorry apparently there is more efficient fridges out there.

But you get the idea on the math.