DOKIO300W 18V Portable Solar Panel Kit Folding Solar Charger with 2 USB Outputs for 12v Batteries/Power Station AGM LiFePo4 RV Camping Trailer Car Marine…

I purchased this for use on my 38 ft cutter sailboat. It is on a flexible frame I built on top of my Bimini and it consistently outperform specs it is 6:30 a.m. right now and it is already putting out 18.6 volts at 331 lots peak sign it is pushing 370 Watts on a 300 operating panel fully charges my house batteries which are two 200 amp hour sealed lead acid in about 4 hours work so well im purchasing another one to run hydroponics in the bow! Well done as long as it holds up it's a great product for the price

I gotta tell you, I decided to level up my pop-up trailer game by adding two 6v golf cart batteries and a solar panel. So, picture this: I slap the panel on the roof before popping up the trailer, and bam! It's like magic - all hooked up to my batteries and ready to roll. Let me just say, it's been about four days since I've been using this setup, and let me tell you, it's working like a charm. Plus, a sweet bonus is that it charges my Jackery like a boss. Totally worth it, highly recommend!

I got a Goal Zero Yeti 500W Power Station that arrived pre-charged with about 83%. Hooked up the panel and the adapters and immediately it picked up a charged with the panels laying flat on a completely overcast day at 10 am. and it read about 55 W but then fluctuated 45-50W. Which is fine I am satisfied. Leaving me to review it at 4/5 stars. I am going to wait for a full sun day to see what I get and re-review and also see what it takes to get that 18% to full charge on this cloudy day.. I would say that this is very heavy. It is portable and folds nicely flat. It would ne nice to take camping and while going out fishing or hiking a few hours I would imagine it would recharge a GZ-PS while away for lights, phone charging etc . Is it enough to also power a Wynter cooler? We will see...

Performance:I bought 2 of these for temporary use on my sailboat. The idea was that I could normally keep them stowed and set them up when at anchor to help keep my batteries charged. I've used them for about 6 months now and I can definitively say they are terrible. The absolute maximum power I have ever seen them produce in any sun condition is about 50-55% of what they are advertised at. The normal amount with no shading and pointing at the sun is about 42% or 125 watts. I didn't expect these to fully live up to the 300 watts they are advertised at but this is pathetic. I have other panels that will produce as much actual power as these will that are MUCH smaller.Convenience:The fold up design of these panels is the primary convenience factor that I bought them for. They do fold up and stow away as I needed them to. Having said that, they are pretty large even when folded up.These panels have no holes for tying them down or securing them in any way. They are rather difficult to secure easliy. This is a real pain for a portable panel.Durability:These panels are semi-flexible and seem to be relatively tough. They have survived being blown over a number of times due to the lack of securing points. I was concerned they would be damaged but their power output is no more abysmal than it was when they were brand new.The weathering of the fabric that holds these panels together is really bad. You would think that fabric that makes up the frame of a solar panel would be UV resistant. I assure you that it is not. These panels showed significant degradation after the first couple months of use. They still look new on the back but are falling apart on the side that faces the sun.The 12V plug that attaches to the panel is not color coded or marked in any way which makes it easy to connect it backwards.I spent a considerable amount on my two panels and I am very disappointed in them. They both perform exactly the same so I don't think this is a case of a defective panel. I wish I had bought different panels.

Works great it's putting out close to 140 watts in my area due to the weather being cooler at times then there testing requirements on panels I'm going to buy 2 others soon the 300 watt 12 volt and 300 watt 24 volt system I highly recommend this item