There is nothing wrong with this solar panel. This is a 60W solar panel, so it will charge your devices slower than others compared to higher power solar panels. But that's to be expected since you're not paying the price of a higher wattage solar panel. I would recommend using this solar panel not so much as a 'charge things from empty to full capacity' type solar panel, but more as a 'maintain battery level and charge slowly over time' type. So what you basically want to do is start charging your devices with it as soon as your hike or train begins. This keeps your devices up to date. As I said, there is nothing to complain about. The performance of the solar panel is as expected at this price point.
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