Prevoiusly neglected and problematic Onan replaced by a battery storage mount.
I bought this
I can mount it to a hitch carrier or on my enclosed trailer tongue. I have a ramp to facilitate moving it.
Inverter, the correct plug in for the RV cord, much quieter than the Onan, and remote fob start/stop. The hassle is dealing with gasoline. I had mounted an external electric fuel pump for the failed one on the Onan and re-purposed that pump with a long enough hose to reach the genny. To refuel, I just run the hose to the genny and turn on the pump. I do have a small gasoline rated ball valve near the fill end of the hose to avoid spilling.
I don't run it much exept for occasional A/C or powering a toaster oven or microwave. Solar takes care of battery charging.
Two years of trouble free service so far.