Description
- ☀【High Efficiency】JJN 300w solar panel kit adopt the 9BB solar panel cell design and are made of excellent Grade A+ cells. The conversion rate is as high as 22% and each solar panel can provide about 1500 Wh of electricity per day (depending on sun availability). It has better quality and efficiency than 5BB and Grade B solar panel cells.
- 【Upgraded Design】JJN monocrystalline solar panel upgraded the latest half-cut cell technology, which makes the solar panels obtain better and more stable performance. Compared to regular solar panel, half-cut cell technology can reduce power loss, lower solar panel temperature and reduce the impact of shading on performance.
- ☀【Easy to Installation】Each 12 Volt solar panel has specially designed pre-drilled holes for easy installation. It can fully meet the installation needs of various applications. It is compatible with JJN’s Z mounting Brackets in the kit. At the same time, we are equipped with two pairs of wires, which can easily connect solar panels, controllers and external batteries. There is no need to choose additional wires.
- ☀【What You Get】JJN 300 watt solar panel kit are very friendly to starters. The included 40A charge controller can make this solar system suitable for different 12V batteries, such as Wet, Gel, MF, EFB, and AGM. It can be applied to RV, Camper, boat and home green energy storage.
- ☀【Long Warranty】As a professional solar system manufacturer, We promise an extra-long transferable power output warranty of 25 years. Whenever you encounter any problems, JJN Solar Panels Service will actively provide you with professional off grid system solutions.
Retief-CDT –
The panels were shipped fast (by USPS Sunday delivery!) and packaged well against damage. Unlike some panels out there for sale cheap the ratings on these are likely accurate. Always look at the size and efficiency of a panel before buying. It takes a square meter of panel to generate ~220w at 22% efficiency.
Testing of the panels confirm the Voc of 24v.
grandam888 –
Overall I am satisfied with these 100 watt panels. Packaging has been consistent without any damage after I have purchased a total of 8 panels.
My panels are mounted flat on top of my camper. With four panels, I have seen as much as 350 watts at a non ideal mounting angle. This is 87 watts a panel.
I’ve since moved to 7 JJN panels on my camper. I cannot comment yet on total power output as it’s been cloudy. However, if I can manage 87 watts a panel, I’m expecting 600 watts. Crossing my fingers for 700 watts.
I’ve yet to see 100+ watts from the 100 watt panels like some reviewers. However, this could be due to angle.
Mine are all wired in parallel.
Lastly, I have 1 panel (8th jjn 100 watt panel) powering my seldom used shed. It getting the job done for led lighting purposes and light duty power usage.
All my panels are on MPPT controllers with appropriately sized wiring and limited voltage drop.
Overall, I’m happy with my panels vs price paid. I’m curious to try the 200 watt panel and maybe move my 8th 100 watt to my camper.
I will update this review with any relevant information at a later date.
UPDATE- 5/26/23
Installed an 8th 100watt panel. I produced 720 watts of solar power yesterday in not ideal conditions. Intermittent cloud cover, non ideal solar panel angles due to being mounted on camper roof. This is 90 percent of total advertised output. I am certain at this point that if all panels were pointed at ideal angles vs sun position, they would produce the 800 watts or more.
Overall, I am very satisfied with these panels. Now off to upgrading my battery bank.
Timm Vanderelli –
Great panels! Much lighter than my other 200W. I did a quick test using two in series into an MPPT controller = 24V. On a bright sunny day with the panels up on sawhorses and on my white concrete patio deck, these panels registered almost 50V into the controller. Getting an Amp out of them at twilight just from ambient light. Once I get all 4 mounted, wired and connected, I’ll leave a more technical review with accurate numbers. The only downside is they are poorly packaged. More than 1/2 of my panels were damaged by UPS. They need additional packing materials on two ends and some padding on each side of the glass panel. Pushed my installation back a couple of weeks while waiting for replacement panels (arriving one at a time).
Dr. Who –
I have 50 x 100 watt and 20 x 200 watt solar panels. I prefer 100 watt because of the flexibility. I use them to charge my 10 kw battery bank and my 50 power stations.
I have bought most of the most popular solar panel brands. I have found that Renogy 100 watt solar panels are the most efficient. I wanted to test these solar panels to see if they are almost as efficient as my Renogy.
After testing them side by side charging my Bluetti AC200Max 2000 watt power stations. I saw that they generated exactly the same amount of power but since these are less expensive, it is a good deal.
PROS:
1. Just as efficient as the best solar panels I have tested.
2. The price is a good deal.
3. The size makes it easy to mount or move.
CONS
1. The corners of the solar panel frames are very sharp and are not smoothed out or covered. I have a bad gash from scratching myself trying mount it. That is why I gave it 4 stars. I covered all the corners of the solar panel with duct tape so that it won’t hurt anyone.
SUMMARY
As far as efficiency is concerned, it is as efficient as Renogy. But the Renogy solar panels have finished corners so that I have never been cut.
Jayson Bruce –
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.