Amazon.com : DOKIO Flexible Solar Panel 4x100w(400w) Semi-Flexible Bendable 12V Monocrystalline Off-Grid for RV Boat Cabin Van Car and Caravan RV Boat Camper : Patio, Lawn & Garden

I ordered 10 of these panels, and out of ten two do not produce any power at all, and a third had a bus bar end sticking out from the wire connection box. Fortunately, Amazon made an easy exchange but certainly require testing and inspection of all panels before any installation. All panels have inconsistent amount of over application of adhesive around the wire entry box with some looking messy even if functional and weathertight. Most electronics have a defect of one in a million or less, but this product clearly lacks quality control and has inconsistent production quality as is visible from panel to panel. While all of the boxes arrived in new, unopened and good condition, all of the panels have areas of many scratch marks on the surface, some light gouges or scrapes, and some with bent corners. the scratch marks are significant and only in certain areas that is inconsistent with scratching from within the box during shipment. Since all of the boxes appear to be in new condition from the factory, with factory box tape on all edges, and the foam packaging in good condition, I can only assume that these scratches, gouges in the surface, and the bent corners were created before or during being boxed at the factory, again indicating very low concern or care for quality. The panels themselves seem to be well made, but the grommets and corners are a little too weak as they are easily compressed with even light screw tightening and also too large of a hole diameter for even a #10 screw head to fully cover, and the panels can use another pair of grommets along the middle of each long edge to ensure hold down. I tested all panels to produce about 19.2-19.5 volts on a fairly sunny day. The MC4 connectors seem fine, and wire lengths long enough, and the photovoltaic cells and thin busbars seem high quality but the quality control of the product that gets packed seems very low, which may be an indicator of this panels longevity or performance over time. I'll try to add more after some extended usage.

While these were intended for attaching to the roof of an RV or camper, I was replacing 12-year-old glass panel sets, 3 on my side porch roof and 2 "portable" (yeah, they could be moved around but were HEAVY) ones in my front yard (that's where the sun is). Therefore, there really wasn't anything to glue them to. Instead, I used PVC pipes and built frames for them, attaching them to the frames with plastic wire ties. I bought 4 of these panels and built 2 frames, each frame to hold 2 panels. See attached photo of first finished frame. They weigh so little even with the PVC pipe frames that I can pick up and carry both frames with ONE HAND. I use them both in the front yard and store them in the garage overnight to prevent theft (light weight makes them easy to steal, too!) and so they're not knocked over by the wind. BTW, being knocked over doesn't break them like the old glass ones.They are also pumping out a great deal of power, so much so that there's no need to put any on the side porch. These 4 panels plus 2 more on order for a third frame all in the front yard during the day give me more power than I expected. Even in hazy sun they produced 22.4 amps at 12-14 volts. With clear skies it's 18-19 amps. With the 3rd frame I expect to get near the 30 amp max my charge controller can take. The batteries will stay charged and I can run the refrigerator all day plus electronics. Sweet!

I got ready to install these on my camper. I tested them on the roof before mounting them and noticed one of the panels was not working. One of the panels has developed burn holes in it and now I am hesitant to install either of the panels on my camper. I hope I can work out a warranty replacement with Dokio.

These panels are lighter in weight than rigid ones. More documentation or description would have been nice. They have MC4 connectors, which would have been nice to know for planning purposes.I easily got 75 watts out of each panel on a partly cloudy day.

I have used these Dokio panels on previous RV's and they have held up well and seem to work as well as the hard panels. The ones I used first in about 2016, are still going strong. Mount on the roof with Eternabond Tape along all edges. Use the Eternabond cleaner or brake cleaner to prep TPO roof, then spray area with Eternabond Prep before putting down the tape. Also, thes panels will not catch the wind as raised mounted hard panels will!