Further thoughts on this issue: I was researching the lighter-weight lithium versions to replace my current heavy backup portable power unit. For home, this unit helps out during power failures. For travel, it is backup power for the CPAP and a jump starter for the truck if needed; I usually travel alone exploring the back country and it would be rather stupid to go without backup power.
Yes, solar "generators" are pricey. However, the lithium Kodiak at 20 pounds has WAY more power than my current lead-acid Duracell unit. My aging back does not like me to haul heavier stuff around and the weight factor is attractive. So is the plug-and-play. The Inergy Kodiak recharges quickly with AC or 12V from a vehicle or from solar. I would probably never use solar with it.
One YouTube review of the Kodiak shows an RV plugged into its 30amp socket and the reviewer using equipment within the RV with the Kodiak as the power source. Nice! Other brands don't seem to have that socket, but you might be able to use an adapter.
I'm not saying I'll buy one, but it is good to know what options are out there.