#### GaryS1964

##### Senior Member

The Dometic manual says the control panel draws 3 amps which I assume is continuously. The AC heater draws 5 amps which I assume is intermittently. So worst case the refrigerator is drawing 8 amps/hour. For a 5 hour trip that would be 40 amp hours.

I'm not expert on batteries so I don't know if I can add the amp hours together for 420 AH or if I have 210 AH which means I would have 105 AH to use to power the refrigerator allowing discharge down to 50%.

It appears that I have sufficient battery power to run my refrigerator while towing. Am I missing something?