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

The more you know about how solar panels work, the better you can decide which one to buy. Solar panel output power is measured under very controlled conditions, conditions which are unlikely to happen in the real world. Solar panels also tend to produce more power when they are cold vs when they are hot, and they produce more power when they are not under load. All this is to say that when I got this panel at home, and checked it with my multi meter it produces exactly the amount of power that I expected. It produced so much more power than my power station could handle that it tripped the over power protection. once it warmed up a bit the power dropped and I was able to charge my power station without any problems. The next thing I discovered, the charge controller you connect your panel too is really the device that determines how much power you are going to get out of your panel. I purchased this panel in hopes that I could get a little over a 100 watts of reliable power into my power station, however I quickly realized that the power stations charge controller just wasn't going to let that happen. I initially thought the problem was with the solar panel, but later realized it wasn't even a "problem" it's just the way the power station ( a small portable station ) works. I say all this to help explain my rating, I like this panel, it works well, it's light weight it has pretty good build quality and it has the ability to charge a phone or similar devise because it has a built in charge controller (their words, not mine) Like many other reviewers have mentioned, the light weight build means that the panel will tend to droop or sag when you use it with the built in kick stands, this is of course not a problem if the panel is just lying flat on the ground or hanging using the sturdy grommets. The bottom line is the panel works fine. As I understand solar panels more and more, I understand that you can't expect to get a stable reliable 140 watts out of a 140 watt solar panel, you need to over size the solar panel by some amount, or buy multiple panels and connect them in parallel or series (if the panel is rated for either of these options) to get a reliable amount of power. Also like I am beginning to realize, you might see better overall results if you pair your solar panels with a quality charge controller, one or two lithium batteries and a good pure sine wave inverter, instead of or in support of using a portable power station, of course this depends upon your needs, the space you have available and your situation. But back to my rating, the droop and sag when using the kick stands is why I would, if I could, rate this panel at 4.5 stars, but because it does work and works as expected I'll round that rating up to 5 rather than down to 4.

I'm using these panels with my Bluetti Solar generator and to augment my permanent solar array as needed. The panels are very easy to setup and provide several cables and connections that should allow for connectivity to most solar generators and solar arrays. The panels are water resistant and have an IP65 rating. I have used them during a light rain with no adverse effects. Make sure to fully zip up the cable pouch on the back because these panels sport a small power block with 2 USB ports and two 18V DC ports. If water gets in these ports it will likely short them out or even the whole panel, luckily the zipper is water resistant. The internal power block has Dual USB ports (5V/2.4A per port) for charging your 5V powered gadgets, and 18V DC output (18V/3A) for charging your laptop or 12V car battery and portable generator. The built-in power block is very handy, you can take these panels camping and charge your portable devices directly from the panels without having to connect a solar generator to collect the power. A very handy addition to the panels. I was able to get 120W from direct solar exposure and around 14W on heavily cloudy days. I'm hoping with the summer sun I'll get closer to the 140W promised. These panels aren't as good at harvesting power as my Newpowa traditional mounted panels but those panels aren't portable and much heavier. I suppose you have to give up some efficiency when you add ultra-portability. Because this is a 3 panel array it is a bit heavier than my AllPowers 100W foldable panels but when folded they are actually smaller (see pictures). The panels are light and the built-in storage case and power block make them very easy to transport and use to charge multiple devices at once. Since I use them to charge my Bluetti and augment my solar array for faster charging of my LFP batteries they fit my need and work as expected I just wish they were able to generate more wattage in direct sunlight. But for the price and form factor I'm happy.

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.

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 produced TL;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 Panel I 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 purchased the 140W Allpowers solar panel about a year ago, and it worked fine for my needs at the time: camping, re-charging portable generators, cell phone, laptop, etc. I use a powered telescope, and with it the portable generators and laptop. Suffice it to say that the 140W solar panel was adequate. HOWEVER, it is about a year later, and I needed to buy a larger battery pack or generator I could run at night while camping. Hence, I needed more power to recharge said generator/battery pack Seeking affordability, I once again bought the Allpowers 140W solar panel. And then . . . it began. I could see on my batter pack, a Generac GB1000, that my input wattage from a single 140W solar panel was 40W, varying and fluctuating, but also increasing as the day progressed. Prior to connecting the solar panel(s), I measured voltages of each, one panel at about 21VDC, and the other at 20.3VDC. I connected them in series, and measured 38VDC at one point, and then 42VDC at another. I'll chalk this up to the saturation of the solar cells as the day progresses. But to charge the Generac, the specs on the Generac say that the max voltage to charge the Generac is 28VDC. Therefore, charging with the solar panels in series is a no-go. Hence, I had to connect them in parallel, in which case, I measured voltage at 20.2VDC. Connected to the Generac in parallel, the input power indication is 67W, going as high as 77W, but generally holding at 67W. So that's 2 x 140W solar panels in parallel measuring at 67W input to the Generac. Total power, however, with 2 x 140W solar panels should be 280W. However, reading the specs on Amazon for the Allpowers 140W solar panel, they indicate 140W Peak Power. So taking 140W peak power and dividing that by the square root of 2 gives me about 98.99W. So, 67W compared to 98.99 is 67% of that power OR: let's take 67W and change that to a peak value: 67W x the square root of 2= 94.75W. So 94.75W x (100/280) = 33.84% of the rated power with 2 x 140W panels in parallel. Now let's take the 40W value from a single panel, and change that to a peak value: 40W x the square root of 2= 56.57W. So, 56.57 x (100/140)= 40.4% of the rated power of a single panel. Whether we use percentages, or just what we see in the measurement of power, the 140W Allpowers solar panel is not producing 140W peak power. Indeed, there are variables to consider, such as placement of the panels with relation to the sun. Maybe the lead engineer in research and development at Allpowers was having a bad day and happened to be using a broken calculator. Maybe quality assurance at Allpowers doesn't have a strict testing protocol where the outputs are measured. I don't know what the test conditions were in designing or how the manufacturer arrived at 140W peak power, which by the way, is an easy defense for them if one doesn't know how to arrive at these numbers using the right calculations. Just based on my voltage measurements, power indications, and calculations, the Allpowers 140W solar panel is NOT as advertised, and hasn't come close to producing the rated peak power. Take what you will from it, be your best self, do you, and make the decision that works for you. As for me, even if a $1k solar panel produces the advertised rated output, I couldn't afford it anyway. This particular solar panel has been adequate to my needs, albeit OVERRATED and with that, probably OVERPRICED. And in case you're wondering, I have a background as an electronics test technician for aerospace, a background as a robotics technician, a former electronic technician in animation and production, and I am currently an electrical test technician in power utilities (just in case Allpowers has a need to know).

This panel saved me from a small nightmare. Went camping over the weekend and had a minivan rental. The car battery died and come Sunday we could not get it started. I had purchased this panel to pair with my power bank for electronics. But I remember that it had jump cables attachments. I hooked it to the battery for 30 mins and I was able to start the vehicle!! As for my power bank, it fully charged it in 3hrs from 25% power left. It comes with all kinds of attachments and adapters. Virtually compatible with any power device.

Well I payed the extra for the additional 40watt output but in direct 3pm sunlight I am getting 103watt … Can’t return it for full value Amazon keeps 25$ dollars because the seller sent me not as advertised item DO NOT BUY THIS ITEM

Very good for the price, bought from warehouse "excellent condition" and it did come in excellent like new condition. Shipping was as fast - got it next day All the MC4 connectors are useful, especially the MC4 to Anderson to my solar battery bank. Initial testing on early spring day 11am with clear direct sun and 10C temp: My MPPT solar bank is getting 102watts input. Pretty good for these conditions and meets my expectation that this will at least get 120watts max input to my battery when camping in the summer! All the charging ports right from the panel is a huge bonus, very nice touch, and will sure to come in handy one day in a pinch for charging a laptop etc. Ordered another one.

Vary portable and you even get a space-pouch for the cables vary simple to set up and use and store afterwards

Overall the solar can generate power to charge battery banks, and other camping electronics. Customer service is fast to respond, and do their best to resolve your issue. I originally contacted them month after purchase with an issue, and got a partial refund. I contacted them more than year later as the panel was struggling to produce energy in direct sunlight and they sent a replacement. If you're charging regular devices I recommend using the USB-C port. Otherwise use the DC connector for solar generators, and laptop, etc.

The spec printed on the panel itself shows this is a 130watt panel, not 140 watts: Max Power Voltage (Vmp): 19.5 Max Power Current (Imp): 6.67A 19.5V x 6.67A = 130 watts Testing will full afternoon sun, clear skies, no clouds no shading: Getting 110 watts into MPPT solar bank Supplied cables does NOT provide one needed to charge most solar banks. No MC4 to Anderson nor MC4 to large barrel 12v cable is supplied. What is supplied: - MC4 to battery clamps (mostly useless, no one knowledgable would ever connect a solar panel directly to a battery without a controller or voltage limiter in between) - MC4 to XT60 (very few portable battery banks have this connector, it is mostly found on escooter/ebike batteries, so again useless for most applications, and again you don't want to directly connect a solar panel to an ebike battery) - MC4 to standard 12v barrel to connect set of device charging tips provided for laptops etc. The 4 subpanels are not completely ridgid, easy to bend/crack a cell when trying to set up or fold up the panel, difficult to handle because of this Summary: It's ok if you can accept all the above limitations, but too many gotchas

This is a good solar panel. Is 140watts. I tested it in winter in full sun. I got 110watts which is pretty good. Is well built, sturdy, feels worth more than I paid and cheaper than anker, ecoflow and bluetti panels. Win. Solid. Even with my dog blocking half the panel soaking in the sun( huskey) it still made 70watts. I'll take it.