My solar panels arrived a few weeks ago. I hooked it up to a Victron SmartSolar MPPT 75/10 solar charge controller and recently tested it on a cloudy day. I noticed a few visible defects on the cells and was concerned that this might result in poor performance. In bright but cloudy light, the panel delivered between 30 and 80 watts. On the few occasions I've had bright, direct sun (Louisiana midday in May), the panel managed 125 to 130 watts. I am very satisfied with the power generation. We had multiple showers and I didn't turn on the panel. The body does not absorb water and dries quickly. The panel is very light and portable. My purpose of this unit is to feed during primitive camping while kayaking (to run CPAP, two tablets and two phones). The panels slide easily under the kayak seat. The only (slightly) negative comment is that the wire is listed as 10 AWG but appears to be much smaller. I didn't measure the wire diameter (this was necessary before soldering to a longer wire and heatshrinking it), but I'm assuming it's probably 14-16 AWG. This doesn't bother me at all as it put out more than the rated power through this cable.