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I know this seems to be a controversial topic here for some reason, but I'm interested in exploring how it might be possible to use foldable portable solar panels to charge the car. I know there are a lot of reasons that this may be a bad (and certainly a cost and time inefficient) method of charging, but I just want to focus on how I might go about this in theory if I wanted to try.

The (hypothetical) scenario I have in mind is that I'm doing some long term car camping out west in a Model 3 LR AWD. I may be doing long day hikes in an area with pretty much constant sun, and may be sleeping in a campground with no available power at night either in the car or in a tent relatively close by.

I know it would be relatively easy (but not cheap) to fit about 1-1.5 kW DC worth of foldable solar panels into the trunk while still having plenty of room for camping and other gear. This is an example of a folding panel in the right size/power range (assuming two to three of them). I'm sure there may be better ones out there, but it's just for example. At 1.5 kW, you could theoretically charge at 3-5 mph, depending on charging losses. With the summer sun, that could be 30+ miles per day and 60+ over a two day hiking trip.

So, even though it's not really a very practical option, I'm interested in how I might pull this off.
  1. What type of inverter would you use?
  2. Would the most efficient/simple route be solar panel -> inverter -> 120V outlet -> mobile connector?
  3. Will the car handle potential sudden variations in amperage without stopping charging?
  4. Will the car be able to automatically start charging again if the power cuts out (due to passing clouds, etc.) and comes back?
  5. Are there any other technical roadblocks I'm missing?
Thanks for your input! Again, I know this isn't a practical (or cost effective) method to charge a car on this sort of trip, but it's an interesting thought exercise!

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