ECO-WORTHY2pcs 100 Watt Solar Panels Monocrystalline Solar Panel for 12V/24V Battery RV Marine Boat and Other Off-Grid Applications, 2-Pack 100W

Works good.

The panels are well built and work. Each gets about 65 watts which is normal. I was able to buy two more.

Excellent panels. I had been buying Eco-Worthy mono -facial panels, and was quite happy with them. Then one day, I went to buy another pair and saw that the bi-facials were at the same price on a sale, so I grabbed them. I hadn't heard any solid reviews of bi-facial panels, so I wasn't really expecting improvement over the monos, but there was a clear difference in their performance. Over the next couple of months, I purchased more of these and separated my panels into two arrays - 500 watts worth in mono-facial, then 500 watts worth in bi-facial. All cables are the same gauge and length. Each array runs through its own controller – both the same model, and finally into the same battery bank. The results will vary from day to day depending on several factors, but in a worst case, I got 10% more from the bi-facial, in the best case, I got 22% more from the bifacial, and an average over the month of August of 16% more from the bifacials.No matter how you slice it, I came out ahead - 16% more power in the same amount of space, and in my case, for the same price as monofacials.

Tested in full sun mid afternoon at 42 degrees N Lat. in December and recorded 98 watts in my Bluetti power station. This is the 100watt, non-bi facial panel oriented at the sun. The panel shown in some of the ads on Amazon for this panel show 16 bus bar (16BB) panels and this is not, its a nine bus bar panel. The frame was slightly dented in shipping and the glass surface shows signs of scum residue but neither of these affected the performance.

I ordered these to charge up a car battery I use to run my CPAP machine while camping. I was in a canyon full of trees, so I had to move them periodically throughout the day to get the best sunlight. I probably only had good, full sunlight for about 6 hours each day. I had to get a charge controller, but I was able to charge several phones and other devices as well. They kept it charged up to full capacity for over a week of off-grid camping. It is a bargain to give me the freedom to get away from civilization for awhile.

I wasn’t expecting to be this impressed, but this ECO-WORTHY bifacial solar panel is honestly great. It was lightweight and easy to install, the pre-drilled holes and cables made setup fast on my house rooftop.Performance-wise, it really shines. Even on cloudy days, it still generates power thanks to the bifacial design. That 23% efficiency is real, not just a spec. It feels solid, durable, and reliable for off-grid use.I’ll do a six months review after they’re using it for a while.It arrived securely packed, which I appreciated. Though I did notice it was shipped facing outward instead of inward—I’m not sure if that’s standard for solar panels, but it might be safer the other way. Either way, mine arrived in perfect shape, but anyway, the seller states they will replace the panel if damaged in transport.If you’re looking for a compact, efficient panel that works rain or shine, this is a great choice.

As the price has been plummeting on these i’ve been buying them pretty much continuously as I can afford them. I find that in real world application in Southern Indiana on a clear winter day at a perpendicular orientation to the sun. I’m getting about 95 W. This is about what I expect out of solar panels. They are so cheap now that I don’t even bother and making sure that they have optimal tracking access to the sun. I have some of them oriented to morning sun some of them oriented to evening, sun, and some of them are used as border walls for the patio. That way I can make use of all of my available space.I’ve strategically wired them so that the controllers get input from panels as the sun moves so as to maximize my controller inputs from the panels, i.e. one one panel set is starting to lose sun, the next panel set is starting to gain sun. That way, the controllers are having the most made out of their time.Because they are getting so cheap, whenever I find a coupon or promo offer, I just buy it. I have a bunch stacked away so that if I have any damaged, I can just drop them in and replace them. So far in almost 40 years of being off grid, I’ve only ever had two panels fail. And in about four years of using these, none have failed and none have been damaged. I’ve only ever had one arrived damaged, and it was quickly replaced with no questions asked.

These work great just buy them. They go on sale for 99, grab 400W for 200$ !! Good deal as of 2025 … Cheap panels are just about as good as expensive ones, just buy a bunch of these!