Dometic Refrigerator Model 2652 - Battery drain

The way generators work - and this is why I'm trying to avoid them - is that after you've quickly charged the bank to ~80% in an hour or two, you then need to run it 5 or 6 hours to bring the battery to 100% full.

But this is kinda irrelevant because if he needs to put in a bulk amount of charge twice a day, this is still a lot of amp-hours for a meager DC circuits of the fridge. Something is wrong - either other loads running, or fridge in 120V mode.