Although I've had the panels for a little over a week and haven't been able to test them in the desert, I was able to test them on my road. with some fixed afternoon sun. I plugged it into my Jackery 500 and without really knowing how to position it exactly, I was able to get about 52 watts of input power into my Jackery, which was a huge win for me considering it plugged into my outlets too home is connected I only get 85 watts. I really like that the solar controller also includes USB charging ports so I don't have to use my jackety to charge these devices and waste electricity on it, or I can charge my device while charging my jackety at the same time. that the legs aren't adjustable, so unless you prop them up with something else (like rock, wood, etc.) they just have a corner, I wish the legs themselves were a little more rigid and maybe adjustable (knowing they were is). add a little weight to the product). However, this shortcoming does not reduce the value of this product for me.