Topunive Bifacial 100W 12V Solar Panel 9BB Monocrystalline Cell 12 Volt for Marine RV Trailer Boat Cabin Van Car Uneven Surfaces 12V Battery Charge

Pro: These are Bifacial so i first tried using a mirror under it to but i could only get up to 79w that way. Then i did some internet research and it said to try a white panel with a matte finish to have diffused light. I found the cardboard box the panel came it is sort of ideal so i spray painted the inside with a matte white and tried them again and got up to 92w- a big difference! so KEEP THE CARDBOARD BOX it comes in. It works as a good base when painted white and it is a perfect case to keep the panels in. That 92w is in Washington state in winter so the sun is very low in the sky going through a thicker part of the atmosphere. In summer when the sun is high I should be able to get over 100 with each panel. They are very light and easy to move around. CON: The Junction box is on the front of the panel which is unconventional and a little strange but easy to work with. If you are looking for the Maximum series fuse rating I contacted the seller and it is 20A

Nicely constructed solar panel that is somewhat flexible. I plan on using two of these on the roof of my crew cab 2500HD truck to power a solar generator I built. I do worry that the backs of the panels get hot so I may place a barrier between then and the roof of the truck. My solar controller says they are pushing watts so I am happy. Power output seems to be about what I would expect, and my battery (2 50AH Lithiums in parallel) fully charge up each day after 8 hours of 5AH breathing machine so i am happy.

Some of these panels sometimes arrive bent on the outer aluminum frame, I know these bend a little, but shipping damage can break or crack the solar cells near the aluminum edge. This company needs to package them better, often they get bent or damaged in transit. Only gripe. It works well up to specs rating. But i do not know if a bi-facial panel works any better as just the one sided panel ??? The price is good on sale....I think it puts out 120 watts in bificial sun? Not sure yet have to do a solar array test. I have these wired in pairs series, to make 24v. Make sure buy in pairs, 2 solar panels to make 24v. Less large wiring, more efficient in 24v over 12v. No reason to not get a 24v mppt charge control, even when you run 12,v batteries, you always run 24v solar to a mppt charge controller, it auto detects the proper charge voltage either 12v or 24v batteries, using 24v solar always, much cheaper to wire. No need to ever go 12v solar if you can avoid it. And or buy a 24v panel single, either way they make 24v. Good for efficiency. I do like the tiny bubble magnifiers built into one side of this panel. Seems to collect light rays at almost any angle. Not angle sensitive so that is a plus. Would work great on a flat roof like house or RV roof. Plus it weighs a lot less than an aluminum glass framed panel. Plus it's flexible to match contour of a RV roof up to a point, don't flex it too much. The other side bificial I will test output soon. I'll get back...... However needs spacers underneath to catch light on bottom of panel and for cooling panel. Plus one side of panel uses different colored solar light gathering diodes cells. Not sure how well bi-facial panels work ?!? Seems to be inconsistent different colored diode cells on one side. Probably okay. Works better on face side, more voltage and amp output. So who knows without testing. Front face is all the same quality. Has nice aluminum thin frame around perimeter. Nice looking and light weight. Looks durable enough. Has a good warranty. Time will tell.

Its been 1 year and so far so good. I have 4 panels in a Series+Parallel config and I regularly get 300w, in rare cases have seen 330w, so 75-82w per panel. Can't complain about that! I also have 2 Renogy panels which perform at the same % of power under the same conditions. I worry about the longevity of these, as it appears that some cell clusters are darker/lighter when you view them at an angle (see picture). Maybe that's normal, or maybe there is some UV fading, only time will tell. But no drop in output yet. I like that these are low amp (6.6 Isc) so I can run them in parallel and stay under my 15A limit. Low Voc (18.6) means I can technically run 3 in series and stay under the 60V limit of my power station. I've tried running 3 in series (in hot weather, so not calculating for low-temp voltage) and they work but sometimes I've gotten nothing when I connect the wires, so I don't know if there was a bad connection or maybe the stated Voc is slightly higher and maxing out my unit. I need to figure that out as I might get 2 more panels and run a 3+3 S&P config. The weight and size to wattage ratio of these is excellent. I got them to go on my van conversion, but when I'm not traveling I take them off and put them on a homemade rack to offset my home electricity. This light weight setup means I can easily move them around the yard by hand to keep them pointed directly at the sun throughout the day. Good purchase and would buy again.

My, oh my! I tested this solar panel and,I can see that within capacity it packs a rather healthy-sized punch. It's quite a good-looking piece of camping technology. There is yet to discover for durability as I tinker with it to test its potential for my "RV-cycle" to maintain a daily charge for the e-bike battery. Installation looks like a no-brainer to me! Battery charge? Again I say it packs a punch. A control box would reduce the actual voltage to a third of the nominal output under, let's say, bright ceiling lights. So I can imagine how much oomph it ought to generate at noon!

Works okay but its mismatched with my other panels, when the voltage rises over a certain point, their power output goes to zero. So I had to get rid of these.

Envoi rapide, emballage solide. Posé sitôt reçu. Il est très fin et, en effet, trés souple, parfait pour mon toit relevable sur Land Rover Defender. Les 100 w semblent bien là, en tous cas en plein soleil. Mon frigo a compression tourne a fond et la batterie 120 ampére reste chargée à 100 %! A voir sur la durée quelle sera sa fiabilité et sa longévité mais à ce prix, pour moi, c'esr parfait!

Moin gute Qualität habe schon 2 auf s Wohnmobil angebracht, und die 3 ist manuell zum laden von meiner Power Station. Von mir 5sterne

Wp max (1 month use) = 110wp Wh in 1 day (may in France) = 520wh On average i get 70-80wp and 400wh on my campervan. Way better ten expected.

Buen producto, es flexible como tipo lamina de PVC y si da la potencia indicada, tiene argollas en las orillas para hacer la sujeción.

A voir dans la durée,le matérielle ne me parrais pas de qualité exceptionnel mais a voir sous les UV