100 Watt Solar Panels, 10BB Monocrystalline 12V 23% High Efficiency PV

Very happy with this JJN Bifacial 200 watt Solar panel. Most panels are lucky to produce 70-80% of their rating. This one has produced as high as 220 watts (110%) and just under 15 amps when everything is just right. In full sun I am getting 195 watts consistently. You'll notice the gig a built, it is on wheels and easily adjusts the inclination which allows me to follow the sun pretty well; adjusting it about 6 times a day (I am retired). Which is a part of the consistent performance I am getting. I live in Phoenix AZ, as luck would have it shortly after getting the panel I had several overcast days. I was surprised that the panel still was producing 90 - 100 watts and just under 7 amps anyway. Which was as much as the 120 watt portable panel I replaced did in FULL Sun. I suspect the effective results are also a function of the HQST MPPT 20 amp solar controller I am using combined with as high as 25 volts from the panel (higher than the 23.4 optimum operating voltage spec of JJN). Believe I would have lost watts with a PWM controller. Good MPPT controllers maximize these extra volts into watts. The 10BB nature of the panel is likely also part of the excellent results. The bifacial feature may also be helping, although I would point out I did not attempt to try to do anything special behind the panel (the house is white and that may have helped a bit). This is a backup system for losing power. I have successfully been running a 5 cubit foot chest freezer with an inverter and a 54 quart 12 volt portable refrigerator directly, for about a week even with the 3 of the days being overcast. I am using a DJLBERMPW 12V 100Ah LiFePO4 Lithium Battery and the solar panel to keep it charged. Interested what I will get here in summer 5 more hours of more direct Sunlight. (PS: If you noticed the bricks, I originally built it for the 120 watt portable panel I mentioned. Going from the 7 lb. portable to a 24 lb (normal for it's size) 200 watt panel required a new frame and counter weighting the increase in weight of the 200 watt panel with those bricks. If you want to build something similar make your you buy locking wheels for underneath)

Produces great energy, good quality .

Below is my original review. I thought it would be best to post an update for those that are considering these panels. I’ve had them for enough time and through a season to update with real specs: See my photo! These panels deliver FULL wattage to your storage and loads. I have these in series/parallel for my 24v controller and inverter. It’s summer 2024 and the other day we had a power outage affecting 5k homes in the area. My shop was running as if nothing happened. Full on AC, compressor, lights, power tools, chargers. These panels pushed 15a @24v with no problems. The panels are staggered in age yet they all perform the same and deliver to my storage array and grid. 4 of these are enough to power my shop for 6+ hours. The next day, my storage was full by 8am. Granted this is summer, however this is the ideal time to rate these and judge them for what they can do. Some other reviewers state they don’t deliver but I can assure you that my panels deliver equally, efficiently and are working well with the environment they are in. I hope this update helps inform you to the longevity of these panels. I purchased these panels 2 at a time last summer and I now own 8 total. It’s been more than six months post deployment and I have to say that I am extremely overjoyed by the results of these panels. One did arrive completely shattered but the customer support is amazing and I had another panel on my door in a few days. These are durable to a point but they are made of glass so if you get a broken one, don’t sweat it! I configured my panels to work as series/parallel to a solar combiner box. From my solar combiner, I send the combined power to a controller that then sends the power over to a bank of LiON batteries @1200ah 24vdc. In turn, a mega beefy 240v@60hz inverter draws from the batteries at 24vdc and sends two phase AC over to the ATS (Auto Transfer Switch) that controls the balance between line and inverter. This winter, the biggest draw was my electric shop heater which runs on a timer. Most of the winter months, I managed to see a daily use of pure solar to power my entire shop. Only a few days in January did I see the switch trip over to line power. Thanks to these panels, I can run my shop exclusively on solar! My compressor, lights, tools and even my welder all are powered by solar! The whole situation would be impossible if it were not for the affordable cost of these panels. I plan to add a few more and push my luck with charging an EV using solar. I just need more storage and I’m golden! This is a fantastic purchase and the price is cutting the competition in half!

First sunny test with this single 200W panel using an MPPT controller: clamp meter showed 23.2V and 8.53A = 197.6W. That’s 99% of rated output. I realize that it's not realistic to expect to get 200 watts from a 200 watt panel unless conditions are perfect… this panel came very close to that! I tested it three times over an hour – consistently 192-198W. Not a fluke. I’ve been messing with portable solar for years, mostly 100W and 50W panels. My previous setup used two 100W panels in parallel and I rarely saw over 150W combined. This one panel not only saves space but actually delivers. I’m getting a consistent 190‑198W in good sun. Pair it with a decent MPPT controller and you’ll be very happy. For anyone who cares about real numbers, this panel delivers. And for what you pay? Easily the best performing panel I’ve owned at this price point.

I have 6 of the 200watt bifacial panels mounted on class c motorhome. They are connected to an ecoflow delta pro inside my rv, that is then connected to the rv through 30 amp rv plug. I currently have the system in 3 panels in series 2 parallel for 1200 watts. Has been working amazing. I have full use of rv electrical systems at all times. Panels have performed quite well this summer. It has been a very rainy stormy May and June in idaho so not best condition for solar power but so far I only need a couple hours of good sun to charge big solar generator each day. Pannels are mounted basically flat on rv roof. They are elivated a bit as I used z brackets mounted to pieces of unistrut. This way they can be easily removed and replaced if damaged and hoping to get some bifacial production. I mainly went with jjn because the size worked for my layout and wanted a10bb 200watt solar panels. I wanted to use the newpowa 220w but they were slightly too long. So far my set up has worked great. When I am in full sun wich has not been allot this summer I have been pulling in about 850 watts. My system is slightly over paneled by about 2 or 3 amps so not capable of getting every ounce of energy in the current set up as delta pro can only draw 15 amps of 17 or 18 amps my solar panels can produce under perfect conditions. I did run them as 5 in series for a 2 week trip as one of my 6 panels arrived shattered. It rained every day at some point for 14 straight days, but at one point perfect condition fell on my motorhome and was pulling 1110 watts on cold wet panels in bright mountain sun at about 5000 feet elevation. That is with only 5 panels so 1000 watts. So they are capable of more than 200watt per panel. My current 2p 3s has peaked at 970 watts so far. But I have been pulling consistently between 260 and 300 watts with sun overhead but full on black rain storms and thunder storms. That has been awsome. In the 5s set up I was only getting about 120watts in the same conditions. One thing that has surprised me is that in the morning when it is sunny and bright I am parked in the trees and several hours from direct over head sun i only get about 60 to 70 watts coming in. But if it is cloudy I get about 150 watts. Not sure how that works, but it has been consistent so far. My wife and I are both teachers and we spend our summers camping in the mountains of Idaho every year. I know this is all over the place, but this is the kind of info I was looking for when I was shopping for a solar system for my rv. I would say jjn panels are close to 5 star, but have only used them for about 30 days so far, not long enough for 5 star long-term. They do have subpar packages compared to other panels. And the sharp unprotected corners could use some work. Productivity has been outstanding i feel for how they are being used. The fact they are light weight is a plus an rv setup. We will see how that relates to long-term durability bouncing around mountain roads every summer. I hope someone finds this info useful, and I would definitely buy them again.

Amazed at how much power these put out. They are very efficient.

Great panels, well packaged and solid. They seem to be efficient and very well made. I will know more in a year or so, but no regrets so far!

These panels were a steal! Great value and pretty well made. I got four and thinking of more. Currently setting these up as a 2P2S system with thoughts of 4P2S for the future. From 41.6V @ 12.84A to 41.6V @ 25.68A. Jump in, Solar is fun and might save you some money! 73 de KE8GKO!