Renogy 30W Portable Solar Panel with 2 USB &1 DC Charging Ports, IP67 Waterproof, 18-month Hassle-free Warranty, Only 0.56kg/1.23lbs

I got my Renogy E.Flex 50 directly from Renogy to charge up my Renogy Phoenix 300 Power Station. After performing some tests, I found that the solar panel proved themselves in the recharging the Phoenix 300 and much much more. All of my tests met all of the advertised charging output times with my power station. Next, I tested the E.Flex 50 solar panel directly charging things like my Anker power blocks, E.Lumen 500 flashlights and Dell Inspiron 15 5000 Laptop. Once again, all my tests and recharging times were as good or better than 110 volt charging methods. My direct recharging of my Dell computer started at 67% battery capacity and within the first 45 minutes went up to 94%. That is a 27% increase in less than an hour. Somewhat impressive in my book. I look forward to using my panel for my many camping trips with my T@G Teardrop camper along with my frequent tent camping trips to the Colorado river north of Yuma. I did have a charger controller question, which I posed to Renogy Support. They responded promptly and accurately to my question. (Controller output voltage switch is Off, 16V, 19V) I even verified this output from the built-in charge controller DC Output Port and the measured output voltages were spot on. I would recommend this product.