JJN Bifacial 200 Watt Solar Panel 12V 10BB Monocrystalline Solar Panels High Efficiency Solar Module for RV Home Battery Charging Farm Trailer Camper Marine Off Grid System Single Piece

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!

These panels work perfectly with my system. They are more efficient than the 100w panels that I replaced with these panels. And they work better. I now got 6 of these 400w bi-facial panels on the same system. And they better fulfill my solar needs than the panels that I replaced them with. These were the perfect upgrades to my solar array.

As a solar DIYer, I initially purchased 1 of these 200watt bifacial panels to test out before I decided to purchase more and or from the big brands, I was skeptical about the bifacial feature where they claim to help produce more energy from the underside when exposed to reflection of the suns rays…and after some weeks of testing, and adding aluminum reflective material underneath, they definitely work to help get more watts, which is a big plus.It was working so well I purchased more of them, I’ve fence ground mounted them using a DIY rig of using inexpensive steel shelving racks fence posts and some strong heavy duty steel zip ties, connected the panels in series (where I know I don’t get any shade from objects for at least 4 hours a day) with the easy ability to clean them with a swifter mop when needed for better efficiency and energy production.I also purchased a few of their smaller non-bifacial 9bb 100watt panels and also put them in series and also away from any potential shade, and they have also been performing great, although, if I decide to purchase any more in the future I will definitely get more of the bifacial panels as they work great, I wish they also sold the 100watt small form in bifacial as well to add in smaller locations.The only slight negative is, that the panels are not in the best protection inside the box they are shipped in (the box itself is good and feels sturdy and it has a plastic handle to carry the panels), the only protection inside is styrofoam corner pieces, thankfully I received them with no damage, maybe better foam might be a good idea.

This is my fist panel so I don’t have a lot of experience personally with others, but from everything I’ve read about them this one is preforming especially well. I was getting 180W on a cloudy day at 90degrees. I have no doubt that on a full sun day and 10 degrees cooler out I would have a full 200watts out of it . I’m extremely happy with it. I’m limited on space on a boat but this works well. I mounted it off the transom so I could get the reflection of the water as well as the sun from above. I ran it with 10gague solar wire to a 30amp charger. Works great with a 20amp charger but I went bigger so I could add another 100 later if I wanted. Would most likely need a 40amp charger with two of these panels because they preform so well.

These are great value biracial panels, I have been hitting 217~ watts today off one of my 3 JJN 200 watt panels connected to an Ecoflow River 2 pro. I have a total of 1.4kwh of panels connected to my power stations and these panels produce the highest output, over their rating. My BougeRV 180 watt panels coming in 2nd place.

Pictured is 2x 200w bifacial in series. Peak was 245w input on an early 9am Mississippi morning. They weren’t setup for optimal sun exposure. The boxes came a little beat up but it perform as they should. If you have a delta 2 with extra battery 4x of these will safely overpanel to reach that 500w max input.

Price is good, power output is impressive. Setup was easy. We were replaceing some 10 year old panels that had rusted grids inside the glass, no longer producing power.

Purchased 3 of the 200 watt panels. Perfect, So Cal, summer sun conditions. Getting a max. of 450ish watts. Expected to see at least 500-525. Compared to my 5 Renogy 100's, I get a steady 500+. Perfect conditions, close to 550-565 watts.Also, slight shading or lower light conditions, output drops way down .Do not recommend