2 PCS Bifacial 100W 12V Solar Panel 9BB Monocrystalline Cell 12 Volt for Marine RV Trailer Boat Cabin Van Car Uneven Surfaces 12V 24V Battery Charge

Works as it should for a solar panel! Arrived on time and was well packed. Good documents and connectors. Solid (but fliexible).

i got 90 watts out of one 100w panel with it just laying flat in the grass, very happy with quality and output!

It works well up to specs rating. But i do not know if a bi-facial panel works any better as just a one sided panel ??? The price is good on sale....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.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.

10 stars for these panels! We placed them on a sailboat to keep a lead acid battery set charged. They run a mini fridge, charge phones, run lights, charge computers, and run a depth sounder. They do all this and more. We trailer the boat with these in place on the stern pulpit, they handle interstate speeds and high winds with zero problems for the past year.1000% would buy again!

I bought the 2x100w semi-flexible 9bb panels. They were delivered fast. I had never heard of Topuvine, but the panels seem pretty good, and it seems the company in China is a player in the market of solar, so I took a chance because of price. Most of the reviews were Vine members, and not technical enough except one review that was spot on.The packaging was adequate, and panels were not damaged. I tested them quickly in evening sun with them in series, and saw about 165w from them.Mounted them on camper using sikaflex and corrugated pvc panel cut into 3/4” strips spaced ~5” apart. I liked the semi flexible feature, not too bendy, not too stiff, and especially liked the length of cable provided with the MC4 connectors.The best part. Just got back from camping. See attached screenshot, I got in traffic, had good midday sun, 80f temps, and the 2x100w panels in series where providing 208w at 15a out of the MPPT controller. My shunt shows I saw 210max!!! I was rolling between clouds too!So now the question is longevity. Will the coating deteriorate fast, develop hot spots etc, or will the panels just gradually lose their performance over the years. I’ll be back to update next year.

I like the flexible aspect, and the bubble texture seems to help some with light gathering from off angles. They're easy to hook up as they have the typical solar claw connectors, and some grommets in the corners to bungee or rope tie them to a roof on a camper or the like for short term use.The output is a bit underwhelming; on a 100+ degree cloudless day, noon to 1, on a flat vehicle roof, at 5k feet elevation, pointed straight at the sun, 75W each was all I could get out of them. They are more effective upside down or shaded than I expected, I do have to give credit where due on that aspect, they're still able to put out 10-20W in the shade, which is nice, but I was expecting a bit better than 75% of rated output in sun so bright I'd really rather not be tinkering with solar panels in it. I know many things are rated pretty optimistically, but I'm not sure how to go about getting more direct sunlight onto these panels than what I described.

Received panel in good condition. Will be added to boost wattage (parallel) during overcast days to existing 400W roof top array. Reduced weight allows panels (2x) mobility to face sun as needed. Built-in grommets allow easy attachment to light weight frame. MC4 connections allow easy connection to existing array (using 2 to 1 or 3 to 1) connectors.

At first they were awesome after 6 months noticably less production. After a year down to 10% of original readings not marketed wattageUpdateTo be fair after further research, time and expense it seems it's possible it's partly my fault these died sooner than expected.These might have lasted longer if used differently than my previous configuration.If you invest in battery power first and when it will run whatever microwave, air fryer or whatever through four cook cycles before needing a recharge minimum before buying panels then I still disconnect the panels when using high draw appliances and charge after peak usage until I can get 2 kw minimum actual panel charging output