>>2459065If I were car camping in the desert I'd definitely want a solar panel, but for hiking it doesn't seem very practical given the extra pound. Seems they cap out around 25 watts, which would charge a 20k battery in like 5 hours, and that's with strong direct sunlight to hit the full 25 watts. Realistically anywhere other than desert climates would take two days to fully charge a pack, just too sporadic to be worth it imo. I'd be stopping for groceries every week or so anyway.
>>2459066yup, trouble is finding a high wattage case. A lot of what I'm looking at costs about exactly the same (case+batteries) as a new Anker off Amazon (which does use quality cells, Panasonic iirc). And buying like-new off eBay is usually the best deal.
https://a.aliexpress.com/_mONmyTKThis is the most ideal case I'm finding, 22.5w. I'd really like a 60w case at minimum, that'd be about two hours to charge 20k mah.
>>2459068There's plenty of models that do. Can't seem to find a good balance between wattage, capacity, and weight though. A used Anker off eBay is probably the easiest thing to do, unfortunately.