I had a 3500 champ with remote start. I built an insulated fan cooled metal box to hold it. It quieted it some but it was still too loud.
As others have said, depending where you use it there may be a problem with noise. Its one of those things of yes you can do it but should you.
To me when using a gen its all about being courteous. I would choose sites that let me back into towards the woods and try to be away from others. I have strung clothes lines between trees and my rig to hang blankets and helped with the noise.
The main issue when charging batteries is getting the energy out of the gasoline and and into the battery. The only problem with the generator is the noise. The weak link is the charging source such as the RV converter. The other weak link is the under sized wire from the converter to the battery. Many converters will only go to 13.6 volts with only 13.4 or so reaching the battery. It will take DAYS to charge at that rate. No I'm not joking. Days.
Upgrading the converter and wiring is mandatory if using a generator. Adding more batteries can help only if it buys you time so as to not have to run the generator and then go to a plug in site. It's not easy to be your own energy company and its common to spend thousands to make it happen.
I'm now running a honda 3000 remote start bolted in the truck bed with a ventilated insulated cabinet. We only run it for heavy loads like Ac, micro, toaster or hairdryer. We have run the Ac for a few hours if caught in a hot area. We normally keep moving with the temps. To us the problem with RV furnaces isn't the propane use, it's the 5.5 amp draw. I now have it covered with solar but if on gen it could easily add an hour or more of gen time per day.
I park the truck and direct the noise away from others. People have told me that they didn't know we had a generator. Our other power needs come from 520 watts of solar. We usually burn 60 to 85 ah everyday unless we get caught where its a little colder than planned and then have hit 120 ah.
Your rig is pretty much going to use 36 ah a day just to sit there with the monitor panel, propane detector and frig on gas mode. From there add in water pump, TV, phone and laptop chargers and you will be seeing at least 50 amp hours .
So running an upgraded RV converter will take 2.5 hr to replace that energy plus you are using more while that is going on. It will also be more than 2.5 hours because of system inefficiency and the last amps go in very slowly.
I ran on generator only last year but had also upgraded to a $400.00 50 amp industrial charger with a finish charge voltage of 15 volts. It's a trade off of being aggressive with the batteries but short on generator run time. You can't be easy on the batteries and short on run time.
If you dont get the charging portion nailed down its Gunnar sock big time. My first year with the TT and champion with a cheesy converter kept putting us in an RV park every third night. We would never get a full charge by checkout time and then last for 2 nights again with the second night of little or no TV.
You can do it if you upgrade to a converter that does 14.4 and go with led bulbs, small led TV and be very conservative. Someone just mentioned above a champ inverter that would be quieter. Id stretch the budget or charge it to break into the quieter inverter category or its basically going to be a pita.
After you get the hang of that. Go with a Bogart engineering solar system. Wire it for expansion and maybe start out with 200 watts.
Also, when I say 60 to 80 ah I'm talking about following the nice weather to Arizona and not doing a lot of furnace time. We do run a 40 inch led TV that pulls 6 amps
