Today was the perfect day to try out my Ravpower solar panel. I plugged in my phone (under the pillowcase so as to not get too hot) at 3:12. It was at 58%. I looked at it about 3:45 and uttered an expletive! 81%!
Keep in mind that the energy is going to only one devise. There are three USB ports, so if you have three devises charging, it will take longer. On the flip side, that’s not the perfect angle, nor is it the perfect time of day.