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I have an old military canvas tent set up on my buddies property for the winter. It has a 21 watt (I think?) solar panel on the roof that feeds a 20,000 Mah power bank, which I use to charge my phone and run a couple of small led lights at night. It works great in that situation but I doubt I'd carry it with me if hiking or camping. Like others have said just get a power bank of appropriate capacity.
