Hi all, would be grateful for some advice with any solutions to renewable sources of power if one wanted to go off the beaten track for a few days for some wild camping in remote locations, away from any power sources. I looked into foldable/flexible solar panels, but they only seem to charge up to 12V non Li-Ion batts. Am I stuffed if the battery runs out? Why is there no wind up or solar renewable sources for those of us who want to escape to the wilderness?? I thought I could get two 36V and only use it for hills, but I intend to have a monowheel bike trailer with a week's supply of camping gear. Please brainstorm any solutions.