Alternative/Off Grid Methods to Charge a Power Bank
Just looking for some help brain-storming I guess.
I'm wondering about what are some possible options to charge a power bank off-grid?
E.g. 2 week camping trip without mains power, how would I keep it charged?
I've seen things like portable solar panels, so I'm interested in peoples opinions and experiences of these things. What are their pros and cons, and what other options are there?