In moving back to the thread topic, here is a solar panel to consider. Too late to help the original poster, but for anyone willing to splurge for the premium price of fold up portable panels, these CIGS panels are very durable, waterproof, light weight, can be rolled up for storage (the grommet version), and work very well in shady conditions! Expensive, yes, but should last a long time. Note that the Hobo discount has expired but BougeRV always seems to be offering some sort of discount anyway, and there are other reviewers on YT also offering codes: