solaroak Foldable Solar Panel 200W Outdoor Water Resistant SunPower Battery Charger for iPhone,iPad,iPod,Samsung,Camera,All Cellphone and More

It took a bit to get a sunny day for a really good test of the 200 watt panel. I had it out before and it did OK under full cloud cover (about 15% of specs) but it really shines under full sun (pardon the pun).The build quality is good. It feels sturdy and I don't believe the panels will warp over time. When you open up the panel you will notice that there are grommets sewn in so you can attach the panel to any number of surfaces, or just stake down in cases where it might be windy. There is a large pouch that is big enough to carry a small PWM controller and some extra cabling/adapters if you need. The connector cables from the panel are MC4 but the wiring is black for both cables. They are marked with stickers, but I used some red electrical tape to distinguish the positive cable from the negative.What I was really happy about was seeing 16.6 to 17.2 volts output. The panel is listed at 16.5 volts, so that range is right where it should be. I never hit 200 watts, but I'm more concerned about the amps than the wattage. It was interesting to see 9.5 amps. The panel is listed at 12.1 amps. Their 150 watt panel is only listed at 5.91 amps (I managed 7.2 amps in my own usage on the 150 watt panel), so it would seem that 9.5 is a bit more realistic than 12.1. I figured that was a mistake in the listing given the stats of their 150 watt panel. If it did 12.1 amps I would be exceptionally happy, but 9.5 amps is more along the lines of what I expected and I am very satisfied with that number.I'm extremely happy with this panel. It's portable, it's durable, and it works as well as advertised. It's a bit heavier than the 150 watt SolarOak panel, but the dimensions when folded are the same, there is just one extra fold out for the 4th panel.

It is clearly durably made with a bag to protect it which I like. It was charging things and a nice little clip considering the partially cloudy weather. It has the usual cables and attached to my power station just fine.