[cbr]

I looked into this some and found some of the most useful advice was for people going to Burning Man. For example: https://www.theplayalabs.com/shopping-list-solar

My understanding is that for anything big like a fridge (even a minifridge) the efficiency and reliability of standard well-optimized 120V AC appliances means it's worth it inverting to AC instead of sticking to DC. Lots of RVs use/used 12V DC systems so things are available, they're just not very good. Inverters are very efficient these days. Plus it's really helpful to have a way to run AC things you already have if you need to.

Though if you only want lights, I do see how DC could make more sense if you can either find or DIY the right electronics to handle the voltage issues.

[zaarn]

I'll probably not hookup fridges or anything large like that. My laptop would be fine, it uses a switching power supply to 19V (though it charges of 12 to 24V just fine).

Most of what I want to power basically uses a power supply to go to DC already including router and wifi, so it's not a problem, I just need to either find the right DCDC converter or solder one myself (I'm confident I can solder something together that should be able to hold 4 or 5 amps, above might need thicker copper plating on the PCB).