Cascadia Replacement Fridge?

Not saying they won't work. Saying that for them to work you need to figure on the cost of multiple inverters and batteries you will go through, and likely at least a few road service calls for jump starts.

 

Not really. The newer Cascadias have battery protection circuits, it's nearly impossible to run down the batteries.
As for the inverters, if you buy a good one, they shouldn't die from normal use.
And as long as you keep it on shore power while parked for more than 10, the batteries are well within their normal cycles.

 

If this one dies today, I could replace it two more times for about the same money as a $600 truck fridge, with twice the room and a real freezer. That would be 21 years of use for the same $600.

 

I understand a DC fridge on a bedroom circuit will shut down [the circuit] before voltage gets too low. But we're talking about an inverter direct wired to the battery. My fridge circuit in my Cascadia has shut off before after long times with no APU or engine run, but there was always sufficient power to start the engine, even cold.

You lose most of that insurance when you rely on inverter running continuously.

 

You're right, I forgot about that detail. Then again, my truck has the worthless EPU, so my fridge is run off the secondary batteries. If I run AC for 10hrs, my fridge is off in the morning. I plugged my Igloo into the dash, I'm not taking chances with my Miracle Whip and lunchmeat.

 

Don't bank on the batteries lasting 10hrs.. (my experience )
Cascadia has an odd size is why you need the one designed for it. You can rig what you want and lose space.

 

That's what I meant. AC is still running after 10, but my fridge has cut out.

 

I'll usually be at 12.3v after 10 hours if I don't run anything else except my refrigerator. You should be fine if you get an energy star model.

 

Do they make high-end inverters that actually shut off at a prescribed voltage to allow enough to crank an engine cold? (say in case you forget to shut off the inverter and you're in a hotel for a long night) or would they not be too reliable?

 

I'm sure a protection circuit could be wired up. I'd use a programmable logic controller, myself.