Looking at the list that foggy provided--the closest to the RV roof air conditioner is the circular saw--and that gets 2 hours of run time. So you would need 4X that capacity for overnight.
Although LiFePO4 batteries are apparently more expensive--that does not hold up iv you want to keep the the battery unit for 10 years. Although 1/2 the weight of FLA batteries, the weight adds up quickly in either an RV or boat.
Our current RV is on a sprinter 3500 chassis-(One ton), we have towed a 4300# car a number of thousands of miles. I would say that is about the size limit as what I would want to tow. We are going to tow our Caracal cat to Hontoon, so we will see how that works behind the Sprinter. We had a Road Trek one ton with "towing capacity" of 6800 lbs listed. We towing the first 25 fir short distances. That was marginal. There is no way I would even consider a C dory 25 behind a sprinter chassis.
In our rv, we have a 3500 watt Onan diesel generator--that is fine for the most of our challenges with power--such as the 15000 BTU roof air. Some owners have gone to 2 100 amp hours batteries. The sprinters have 200 amp output LN alternators--but there is danger of these overheating, so they are limited in run time to less than 50 when charging the Li battery bank.
No free lunch here.
Bob
Although LiFePO4 batteries are apparently more expensive--that does not hold up iv you want to keep the the battery unit for 10 years. Although 1/2 the weight of FLA batteries, the weight adds up quickly in either an RV or boat.
Our current RV is on a sprinter 3500 chassis-(One ton), we have towed a 4300# car a number of thousands of miles. I would say that is about the size limit as what I would want to tow. We are going to tow our Caracal cat to Hontoon, so we will see how that works behind the Sprinter. We had a Road Trek one ton with "towing capacity" of 6800 lbs listed. We towing the first 25 fir short distances. That was marginal. There is no way I would even consider a C dory 25 behind a sprinter chassis.
In our rv, we have a 3500 watt Onan diesel generator--that is fine for the most of our challenges with power--such as the 15000 BTU roof air. Some owners have gone to 2 100 amp hours batteries. The sprinters have 200 amp output LN alternators--but there is danger of these overheating, so they are limited in run time to less than 50 when charging the Li battery bank.
No free lunch here.
Bob