ALLPOWERS SP029 140W Portable Solar Panel Charger for Laptop Cellphone, Waterproof IP65 Foldable Solar Panel with 5 Output, for Solar Generator, Power Bank, 12V Car Battery

I wish I could give this 4.5 stars because this is a great value that does what it is supposed to, but isn't as universal as some may think. For the record, this review is as much information sharing as anything.2024 UPDATE: More details on watts producedTL;DR: Works with Bluetti power station but you need to buy an XT60 adaptor or use the cables provided with the power station if you have them. Panels are wired in parallel which is good for partial shade. Was able to get 60W in less than ideal situation so you can charge a 500Wh power station throughout the day. Best output watts I have seen is ~80W Good value, but not flawless.I bought this for $125 to use with my Bluetti EB55. I didn't want to pay $500 for 200W panels from the manufacturer, but wanted a bit more than what the knock off 100W panels offered. This was a good compromise. Despite having lots of different adaptors in the box, I had to purchase an Anderson to XT60 adaptor to get this to work on my unit. Allpowers provides a barrel plug that fits the input for the Bluetti, but that particular jack requires 20V to work and this panel wasn't able to provide it. By going with the Anderson to XT60 (I originally thought they were the same thing, but they are not), I was able to get things working. (Edit to add: I later realized my power station came with the cables needed.)Two important details about these panels that are worth noting: crystalline structure and parallel vs series wiring.First, these panels use polycrystalline silicon instead of monocrystalline like some of the more expensive models. Essentially it is a bunch of small pieces instead of one big one. People talk about mono being more efficient, but in my experience that has more to do with surface area required than with anything else. Since poly is cheaper, if you want to save a few bucks you can use it, but you will need slightly larger panels to get the same wattage. But if you are purchasing based on output and price, it doesn't matter.The second item is related to how the individual panels are wired -- either in series or parallel. Without getting too technical, if a multi panel unit like this one is wired in series, then if one panel is partially 50% shaded then the overall output will be 50% less even if the other panels are in the full sun. However, if say a 4 panel design is wired in parallel, and one panel is 50% shaded, your output power will only drop by about 12.5% if all the others are in full sun. These panels are wired in parallel which is great and something I was originally worried about.Now let's talk about output. It is winter here as I am reviewing this. The sun never gets very high in the sky, it is hazy, the days are short, and since I live in the woods, everything has at least some shade from leafless branches. It is close to worse case scenario for a "sunny day" I will encounter. In these circumstances I am about 60W just setting things up quickly and not being too particular about alignment.60W out of panels advertised for 140W doesn't sound very good, but it was much better than I was expecting given the circumstances. Since the EB55 is 537Wh unit, I know that even in less than ideal situations, this will be enough to charge it over the course of a day.UPDATE: Running these in full sun near the solstice at mid day, I was getting outputs of around 75-85 watts, so that is what I am using for best case scenario.Given that ~500Wh power stations cost $500 on their own, I was not eager to basically double that amount to add solar functionality. I am very pleased to be able to recharge every day while spending less than $150.Since this is technically a review, let me drop a few other quick thoughts on the unit.- There are lots of adaptors you can use that come with the panel, but don't assume that just because it fits it will meet the needs of your device.- The alligator clips they include are basically useless since it can be dangerous to try and charge a battery without a power control unit.- The USB controller is nice and having it work with USB-A and USB-C is a perk. Can't really think of a situation where I would bring this but not my Bluetti, but still a good perk.- The pouch is nice to have to keep all the wires.- I like that if I decide I do need more power, I can buy another unit and wire it together with this one.- It is a bit heavier and bigger than expected, but not burdensome.Final verdict: Great value if you want solar charging and can work around the limitations.

2021 AllPowers 120 watt Solar PanelI already have an AllPowers 372Wh Power Station Generator. Which works great. I have used it to power lights and fans during a power outage. Also used it to power Christmas lights on my pontoon boat this year. The Power Station is easy to use, well built and even supports Bluetooth connectivity through an app on my iPhone. I compared many brands before choosing Allpowers. In the end AllPowers offered the most features, quality and value for the price. Very glad I made the Allpowers choice and highly recommended it. I am an AllPowers fan.Anytime I have contacted AllPowers support they have been quick to respond, knowledgeable about their products and very willing to engage on resolving my issues.Now I am trying the new AllPowers 120 watt Solar Panel, to charge my AllPowers power station generator. This panel is capable of charging any Brand of generator/power station or other project needing solar power; As it comes with a wide variety of connectors and adapters. My AP power station can use AC wall power, a DC 5.5 x 2.1mm barrel plug or an Anderson connector to charge. This panel comes with both DC5521 and Anderson connected, as well as adapters for many other needs.It’s size and weight is what surprised me the most. At 22 x 14.2 x 2 when folded, it is just two notebook paper pages tall by a little more than one sheet of notebook paper (landscape) wide. When fully open it is 22 x 60 inches, much smaller than similar wattage panels. I believe this is because this newer panel is more solar efficient than older style panels @ (21%). Ultimately this means this panel has a faster charge time, is lighter weight and is smaller size than similar older panels on the market.It comes with a built in charge controller that manages the various voltage and amperage power out of the panel. For example the MP4 solar connector provides 21v at 20A, DC ports provide 12v at 10amps, USB ports provide 5v at 2.4amps and DC 18v at 3amps for a laptop. You can also chain two of theses panels together to get more amperage for even more power and faster charging times. All right out of the box.Overall this is an impressive foldable solar panel with all of the features and adapters you may need, faster charge times, better solar efficiency, lighter weight and smaller size than comparable panels. I continue to be amazed at the AllPowers products. The quality and features they offer are first rate and are offered at a very reasonable price point.

I have 2 of 140w and 2 of 100w (100w came with power station). Total max output would be 480, most I have gotten is near 200, usually about 40% not great but for price it's tolerable. I'm new to this so may upgrade depending on researching..Another reviewer talked about the craziness of setting these up with the flimsy leg supports on the units. I wanted better/cleaner support also, and wanted to be able to use at home or away. The 100w panels come out to 40 inches wide, the 140s are 56 inches. That came out to be exactly 8 ft, made are easy to build portable rack. The brackets I got came with adjustable knob and nut for changing angles. Did away with the knobs and nuts, used clevis pins, adjusts in couple minutes.. can load in pickup for on the road, or use at home. casters made easy move, just added rope to end for easy move.