First of all, it should be mentioned that the product was stolen when it was delivered, but the supplier sent me a new device directly and easily. I would even give extra stars for that. I had the solar panel with me on vacation in Italy. 4-5 hours charging time and it was fully charged. I don't know whether the power bank really has 10 Ah, but it's enough to fully charge my smartphone twice and that's enough for me. The output socket also offers enough power to charge my JBL Extreme 3. With the battery fully charged and the JBL LED flashing red, the solar station managed to charge about 85% before it was empty and that is definitely usable! Even some smartphone chargers cannot charge the JBL Box, hence the example. I currently have the panel in constant use and will be taking it to a festival next week. Since I had it in the windshield on the trip to Italy and charged it on the way, I know that it works. So I'm sure I won't be disappointed. What's still pending is a test by hanging the panel on the backpack, but I'm assuming poorer performance. 1. I don't want to constantly walk in the blazing sun and the panel won't load very well in the shade. 2. The angle is certainly not optimal. As for weatherproofing... Anyone trying to set up the solar panel in the rain must not have understood the concept. ;-) I'm super satisfied and will probably buy another one, after all you have several devices to charge. Kind regards