PS - My bad. The Renogy unit I quoted above does NOT include a charger. I’m rethinking that. It seems they did have an inverter/charger but not sure if it’s discontinued.
Unfortunately fossil fuel power is not a great option. The data closet is furthest away from the outdoors. I am absolutely in love with the idea of propane powered generators though, the ability to store propane for years is appealing, so long as you can store it away from the main building, which I cannot. Same of course for gasoline. I have no separate shed/garage in which storage of those would be safe.
So overall the solution for me has to fit in the bedroom closet.
Also would love, in a perfect world where I can afford to buy an ugly ass stainless steel truck an outdoor generator. The yearly maintenance costs alone are more than my budget. :) Also, no access to natural gas. This is an electric only neighborhood.