High Efficiency JJN Bifacial 400 Watt Solar Panel for Home Use

what our customer say this product:

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1. Subiebrat Verified Buyer – 18 March 2024

   Delivered with care on date promised.
   These are large panels, as expected for 400 watts of output. A bit awkward to move and set up because of the size but fewer panels is a bonus. Build quality is exceptional, the output amazing. Without worry of perfect angle or alignment, on mounts in the lawn these two panels wired in series produce 815 watts in full sun, even diffused evening light produces useable power. Looking forward to having these mounted and properly set with the backs open for added output.
   Worthy panels at any price, exceptional value when discounted or a coupon is available.
   Very satisfied customer! Hoping the longevity is as good as the initial build.
   

2. Rowe Verified Buyer – 21 November 2024

   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!

   

3. Randall Ayers Verified Buyer – 3 March 2025

   I recently acquired the 100-Watt Solar Panel, and I must say, it lives up to its promises in every way. The outstanding performance of this solar panel has truly exceeded my expectations. First and foremost, the power output is exceptional. This panel consistently delivers a reliable 100 watts, and on a good sunny day, it even surpasses expectations by providing an impressive 102 watts. This extra power boost adds significant value to its already stellar performance, ensuring you get the most out of your solar investment. The efficiency of the 100-Watt Solar Panel is truly commendable. It efficiently converts sunlight into electricity, ensuring a steady and dependable power supply. This is especially crucial for those relying on solar energy for off-grid setups or emergency power sources. What sets this panel apart is its durability and build quality. Crafted with high-quality materials, it not only provides exceptional performance but also withstands various weather conditions. I’m pleased to share that it arrived in perfect condition, undamaged during shipping. The robust design ensures the panel’s longevity, making it a smart investment for anyone looking to harness solar energy for an extended period. In conclusion, the 100-Watt Solar Panel not only lives up to its name but also surpasses expectations. Its impressive power output, efficiency, and durability, combined with the bonus of 102 watts on sunny days and damage-free shipping, make it an excellent choice for anyone seeking a reliable solar solution. I wholeheartedly recommend this panel to those looking to embrace solar energy with confidence.

   

4. R. Dean Phelps Verified Buyer – 21 April 2025

   These panels actually produce the advertised power, unlike many others. JJN may be a lesser- known name in this industry, but they’ve been around for a very long time, and the panels I received from them carry their brand name right on the face in permanent form. This alone made me smile while I was setting them up for testing because I immediately felt they would perform well. And perform they did! I connected them to a 12v 300ah lithium iron phosphate (LiFePo4) that had gone down to only 6% charge while I waited on a refund for some other panels I had purchased. These panels immediately began producing 640-650 watts (flat on the ground and at an angle to the sun of about 25 degrees) through a 100v/50a charge controller. By the time the sun began to set my battery was showing 100%. I’m not using a lot of power, averaging about 750-1000 watt hours per day. Currently, with one panel facing directly up and one leaning against my windshield (toward the sunset) my battery is full again by 10-10:30 am. These panels easily keep up with that load even on days when I store one underneath the other while I’m driving to another campground and am only getting power from the panel on top. The short version is I’m impressed by these panels. They’re well-made, nicely finished, and arrived in adequate, functional protective packaging. While they’re on the large and heavy side, I’m able to use both on a small SUV. They may not be the most stealthy, but their performance is impeccable. The one drawback is the mounting holes are only accessible from underneath, but using carriage bolts in the oval holes keeps them from turning so I was able to bolt them to a frame I welded from some angle iron that attaches securely to my luggage rack and allows me to stack them for driving. HIGHLY RECOMMENDED!