120W Flexible Solar Panel 12V Monocrystalline for Marine and RV

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1. Chris Thompson Verified Buyer – 26 April 2024

   This panel is robust, and suitable for various non-building mounted applications. It achieves around 50W output, when fed through an MPPT charge controller connected to a 100Ah battery at 20% state of charge. This is ideal for applications like boats and campers, topping up batteries, or maintaining light sources in off-grid settings.

   I have deployed two in an outhouse environment, where they provide power to exterior lighting along with an interior motion sensor controlled fan and light . On clear days, each panel generates approximately 250Wh of energy daily. Its thin design allows for easy use in various applications while maintaining a remarkably low profile. The MC4 connectors are adequate in quality but I opted to utilize dielectric grease to increase their protection from moisture ingress and corrosion.
   

2. basil_ Verified Buyer – 15 May 2024

   Update 10/7/24: After a whole month of fall weather, it’s obvious that this panel is quite useless without strong full sun. You may as well pack it away after the summer. It is so disappointing and puzzling that this panel that performs so well in full sun becomes powerless with the slightest shade. There are much cheaper and better performing alternatives that provide year-round utility. It’s only worth 2 stars at $60. Update 9/23/24: At noon under a very overcast sky, the panel could barely produce power to turn a small fan. It could not charge the Ecoflow power station directly. While I did expect drop off at low light, this is much worse than expected. Downgrading to 4-star. Update 9/21/24: Today, last day of summer, at 1.30pm, clear sky, panel pulling 51W steadily charging EcoFlow power station directly (without controller). Very satisfactory. In late summer (2 days to fall season) afternoon sun at a northern US lower 48 locale, not 100% clear sky, I caught glimpses of 54 Watts when charging an Ecoflow power station directly with this 60W panel. I have no doubt that under full summer sun, this panel can pull 60W easily. However, the power output dropped precipitously when the clouds came in. The poor performance under low light is disappointing, but seems to be a common with flexible panels. The flexibility is more a gimmicky thing. However, the light weight is certainly a big bonus in portable situation. The silicone caulk holding the wire connection case is hardly a thing of beauty, though the solar cells look reasonably neat. Because this panel delivers on its rated power output with a reasonable price tag ($60 for 60W), this is a 5 star buy for a highly portable panel.

   

3. TechPicky Verified Buyer – 9 January 2025

   Pros: • Very thin and light, slightly flexible • Comes reasonably close to rated output (39W vs 60W) • Came with a pair of MC4 waterproof solar connectors • Metal eyelet mounting holes on each corner Cons: • Output did not meet rated output power • Output drops near completely in overcast light • Not very flexible • Front surface of PV cells doesn’t seem to have much weather protection This panel mostly meets its claims. The claimed output is 60W, I was able to get about 39W testing with 2 different methods (more below). The output did drop precipitously with even overcast bright light. The panel is thin, specified as 3 mm, and that seems correct. The back is a piece of white flexible plastic that can bend a little, but not much. There are 4 metal eyelets, one on each corner for mounting. The panel connects with standard MC4 solar connectors, and even came with an extra pair of connectors. Specifications from label and measured value: Solar Module Type: POW-LTW60W Maximum Power (Pmax): 60W measured: about 39W Voltage at Pmax (Vmp): 19.44 measured: about 15V ~ 18.7V Current at Pmax (Imp): 3.09A Open-Circuit Voltage (Voc): 23.33V measured: 22.7V Short-Circuit Current (Isc): 3.27A measured: 2.03A Weight: 1.1 KG Size: 570 x 605 x 3 mm Power Tolerance +/- 3% Max System Operating Voltage: 600V I tested the panel output using two different methods. For both, the panel was tested in extremely bright sunlight in Southern Florida in late September around 2 PM EDT, so the sun was almost directly overhead. The first method is fairly simple, I have an old H605A halogen 12V headlamp. This lamp has both high and low beam filaments, of 65W and 35W respectively. This makes a near ideal load for testing PV panels. With the low beam, 35W filament, I measured 2.72A @ 14.3V which is 38.9 Watts. The bulb was brightly lit. With the 65W filament I measured 2.76A @ 3.7V which is 10.2 Watts with the bulb rather dimly lit. From this test I measured roughly 39W. For the second method I used an MPPT charge controller with a 110 AHr battery. I connected the 65W headlight to the battery as an additional load as the battery was mostly charged. Again I measured around 39W (39.3 max measured at 18.7V PV). Screen shots from the MPPT controller app are included. So, from this test I also arrived at about the same 39W output. Both tests above were performed in extremely bright sunlight with the panel flat on a driveway and the sun nearly directly above at midday. There might be some places on Earth that might be brighter, but not many. Given the testing, this 60W panel delivers about 39W peak that I measured. Most panels don’t deliver their rated output, and this one isn’t as bad as some, but don’t count on getting 60 Watts out of it. One thing that I did notice, and I also read in other reviews, is that the output drops precipitously with less light. With a passing cloud, but still extremely bright the output dropped to near zero. Yes, I expect less output, but most panels still produce some output. I would have expected at least a few Watts output as it was very bright but not direct sunlight. Overall construction seems OK. The silicone rubber (RTV) sealant around the connector was a bit sloppy (see photo). There were also some threads of the RTV on the panel itself. Most of these could just be picked off. The mounting is by metal eyelets in each corner. Metal carabiners could probably be used to attach it to something. No mounting hardware was included. The top surface of the PV cells also doesn’t seem to have much of a protective surface. Only time and extended exposure will tell how they hold up. This panel seems better suited to temporary use rather than a permanent installation. The mounting, and the somewhat questionable protective layer seem to make this better choice for temporary use. The lightweight also is an advantage for such an application. That is actually my use case, backup power in the event of a hurricane so this works for me. The panel included a pair of MC4 waterproof solar connectors. This is a nice addition, and I haven’t seen other panels include this. There is no documentation of any kind included with this panel. The only documentation is the specifications printed on the panel itself. I’ve copied that above and included a photo as well. The panel comes well packed with a large sheet of foam covering the surface of the panel in a cardboard box.

   

4. Paul Sjoberg Verified Buyer – 20 February 2025

   This is a lightweight solar panel that is going to excel for some situations and fail badly in other ones. First, let’s go back to the Back to the basics: A solar panel must be aimed at the sun such that the panel is as close to 90 degrees as possible to the sun’s rays to achieve the full output power of any given panel. I know how to aim a flat panel, but how does one aim a curved pane? I do not know how to aim curved panel. Please look at the one picture that I attached to this review. When I aimed and tested this panel, it produced about 45 watts of power which is what I expected and hoped for. Please look closely at this picture and notice that I used a small aiming guide which tugapower.net does sell. It is known as a Solar Angle Guide for Solar Panels. I strongly encourage using one of these solar guides when you are setting up any solar panel and I do mean any panel from 10 watt to 400 watts. In my experience, all solar panels typically produce about 75% of the power that they are rated for and that is in good sun conditions. The average good quality 100-watt single sided panel will produce about 75 watts on a sunny day, provided it has been properly positioned. Just because this panel can be installed on a curve does not mean that it should be. When a panel is installed on a curve, seriously how much of it can be aimed at the sun? The point that I am trying to make is that if only a portion of this panel is actually aimed directly at the sun at any one time of the day, then its power output is going to drop. Instead of 45 watts per hour, you may only be able to receive 20 watts per hour. Or, you may get almost nothing. I am still thinking about how I will permanently mount this panel. I will probably mount this panel high up, fully making use of its light weight. I will support it with bungee cords and rope and attach the MC4 extension cables to it from above. It should do very well in a high mount. I will attach the MC4 cables to it from above, so that the weight of the extension cable is supported by rope and cabling. I do not want the MC4 extension cables to place a stress on the cable connections on the panel. I am giving this panel four stars mainly due to the short MC4 power takeoff cables attached to the sides of the panel.

   

5. Gregory Verified Buyer – 14 March 2025

   Good flexible panel. There are use cases for flexible panels you just can’t do with anything else. This panel can bend around curved surfaces and is very light. If you need a flex panel this is one to consider. The size is not too big but still large enough to give a good amount of power. It also uses standard connections so you could parallel or series connect more then one to get additional power. It is a great thing to have in your solar stock. It is also good for camping as you can hang it on the side of your tent and its very light weight.
   

6. Kindle Customer Verified Buyer – 17 April 2025

   This panel is super light compared to some of my other panels. It’s also very thin, both features that make it easy to store. I didn’t really need the flexible part of the equation, except that I suppose it makes the panel less likely to crack if you are transporting in under less than ideal conditions. My favorite features are the power, the lightweight and how easy it is store in my off grid cabin.