Solar with Lithium Battery

100 watts.... as said is something but not much depending on your usage. Run the propane fridge controls, water pump and a few LED lights in the evening. Much more and you will be looking for an additional 100 to 300 watts solar. Especially when the sun is low in the sky. But if the 100 watts gets you through and you pull out with a low battery to charge on the way home that is fine too.

In perfect solar conditions about 20 amp-hours per day.

Look at SiO2 and buy two batteries for the price of one Battleborn?

For estimation purposes, I would assume about 5 amps of solar harvest where conditions are ideal,
but the nice thing about LFP is that it has a higher charge receptivity rate (compared to wet cell) due to low internal resistance...This means that you’ll get better results with just your one panel, though solar is so inexpensive nowadays (often only about 0.85 cents per watt) I’d recommend at least another panel - but if you do so, try to keep the panel voltages approximately the same, else the higher voltage panel will default to that of the lower one (first, confirm the amp capacity of your charge controller)...The other thing to consider with LFP (LiFePo4) is your factory converter-chargers output voltage...always feel free to PM me if needed.

3 tons

Sounds other thing is