[mikestew]

With the kind of draws described, I believe OP got the terms confused and meant "200ah". We've got a 200ah house battery in our RV, and you can run low-load stuff like a laptop and a monitor for a long time on that battery. Hell, fire up the 1100W microwave and heat some lunch. Just do it early so that the solar panels can refill before dark.

[PaulLeiby]

And of course 200 Ah (@12VDC) is 2.4 kWh. BTW, I have a couple of these LiFePo 100Ah batteries, and they are great. But I do get a kick out of how the capital cost is about $800 USD to store 1 kWh, or $0.15 worth of electricity (omitting solar cell cost solar charge controller cost, which are comparatively minor)! Still, the grid independence (for sustainable Tiny Electrical Living) is a wonderful thing.