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Availability:
Only 10 left in stock, order soon!
Arrives
Saturday, Oct 24
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Set name: 400W
Features
- [POWER YOU CAN EXPECT] 400W is the lab rating (STC); real-world output depends on sunlight, heat, shade, cable length/gauge, and the controllerMPPT recommended.
- [LONGER BUILT-IN LEADS] 3 m (9.84 ft) MC4 leads reach farther than many short-lead panels, often eliminating add-on extensions and extra connectors. Fewer joints = fewer issues.
- [12V: PARALLEL PRIORITY] For 12 V systems, choose parallel wiring for smoother charging; use series only with high-input controllers.
- [REPLACES 4100W] One 400W unit means less hardware to buy and wire, fewer branch pieces, and fewer chances of a poor connection.
- [WEATHER-RESISTANT CONSTRUCTION] Tempered glass panel and aluminum frame with a sealed junction boxmade for outdoor rain/splashes in yard settings.
- [MOUNTING FRIENDLY] Pre-drilled holes align with common Z-brackets, rails, and tilt mounts for sheds and greenhouses.
- [IF DAMAGED, WELL SORT IT] Check upon delivery. Should a panel arrive damaged, send us a message via Your Orders for a fast resolution.
Description
About Us We’re committed to making your outdoor life easier, greener, and hassle-free, backed by our proven expertise and global customers’ trust.For over 17 years, DOKIO has been dedicated to reliable solar solutions for outdoor enthusiasts.Our experienced R&D team and cutting-edge technology mean you get lighter, more powerful, and longer-lasting solar gear—designed to keep your adventures powered anywhere.
Brand: DOKIO
Material: Monocrystalline Silicon
Product Dimensions: 67.8"L x 44.6"W x 1.2"H
Item Weight: 49.4 pounds
Efficiency: A+
Efficiency: A+
Amperage Capacity: 13.24 A
Maximum Voltage: 37.08 volts
Maximum Power: 410 watts
Output Voltage: 31 volts
Connector Type: MC4
Item Dimensions L x W x H: 67.8"L x 44.6"W x 1.2"H
Item Weight: 49.4 pounds
Material Type: Monocrystalline Silicon
Brand Name: DOKIO
Included Components: Bag
Model Number: Solar panel-DSP-400M
Number of Items: 1
Number of Packs: 1
Item Highlight: Includes a 9.84 ft MC4 cable; designed for gardens, yards, greenhouses, sheds, cabins, patios, and off-grid systems
Item Type Name: solarpanel
Manufacturer: DOKIO
Manufacturer Part Number: FBA-DSP-400M
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Oct 24
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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![[Ultra]ECO-WORTHY 12V 400W Complete Solar Panel Kit for RV Off Grid Trailer](https://m.media-amazon.com/images/I/71FJ2xh8+dL._AC_US500_.jpg)
Top Amazon Reviews
Set name: 800W
I have to admit, I’m a solar junkie. I love anything solar, and if I can run most of my house on solar, I’m absolutely going to do it. That’s what led me to purchase these panels. I bought two 400-watt mono solar panels, giving me a total of 800 watts, and the quality is excellent. I do want to mention that these panels are very large, so definitely measure your space before purchasing so you know exactly what you’re working with. They are all so a bit heavy. Right now, I have them temporarily set up on the ground for testing. I mounted them on rails and ran the cables directly to my EcoFlow Delta Pro battery backup, and they work perfectly. Even with them on the ground, and with some trees occasionally getting in the way, I’m seeing around 560 watts. Once I get them mounted on the roof, I expect the output to be even higher. As most of us know, solar panels rarely hit their full rated wattage, so seeing 560 watts under less-than-ideal conditions is pretty impressive. My EcoFlow Delta Pro is connected to a sub-panel, which makes it easy for me to rely on my own solar power and kick in grid electricity only if I want to. Right now, these panels are doing a great job charging my batteries. I currently have an EcoFlow Delta Pro along with an extended backup battery, and I may eventually add a couple more panels to increase efficiency. It’s a great feeling knowing I can charge my batteries for free. These panels do experience a drop in output if something blocks the sun, even standing in front of them, so full, direct sunlight is best. Installation was easy and very plug-and-play. I have mine wired in series, and the MC4 connectors are clearly marked. While it would be nice if the cables were color-coded, the positive and negative are labeled, and installation was still very straightforward. They start producing power as soon as the sun hits them. Overall, I’m extremely happy with these DOKIO 400-watt mono solar 2 panels that equal 800 watts. Solid performance, easy setup, and exactly what I was looking for to expand my solar setup.
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Reviewed in the United States on December 14, 2025 by Living Life
Set name: 100W
I started with the $120.00usd 200 watt Suitcase setup, it included everything and was truly “Plug n Play”. I used an old 12v battery. The setup worked so well, I then purchased the 2 100watt kit, added a MPPT controller, it produces much more than the Lead battery could take, so I got 100ah LiFePO4 and 2 more panels. I am pulling in 1000 to 1200 Wh a day with the 4 panels. That is Henrietta, project supervisor inspecting the work. I have now gone DC on more than half of my energy use.
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Reviewed in the United States on September 18, 2026 by bubba
Set name: 400W
I did purchase 4 of DOKIO 400W 31V Mono Solar Panel - Works for 12V/24V Systems, I did install as series 2 panel to produce more voltage about 75 to 80. works in voltage. But now wattage or amp. I connect to one of the Grid tie inverter which soport 90v and 2.000 watts . Don't work. Only work on 12vdc.and 24v.aftrr that is trash. I have 4 of the 24v 320 watts renegy I did install in series they work fine. I think the DOKIO 400W 31V Mono Solar Panel - Works for 12V/24V Systems, is trash for series. Is my opinion and experience buying and having more trash.... Please check before you buy I don't want you throw your money away
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Reviewed in the United States on June 19, 2026 by isai
Set name: 100W
Works just fine keeping a little 20ah AGM battery juiced up for camera's and actuators on my solar arrays. Sometimes it's just easier and cheaper to put a mini system together than running cable at today's prices. And this little panel fits the bill perfectly. Provides more than enough power for the need. If I can only convince my cats to stop laying on it... :}
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Reviewed in the United States on May 13, 2026 by Steven Harper
Set name: 100W
I bought a total of 3 of these compact size 100 watt panels. A two pack and a single panel (I needed a total of 3 panels for my project). They all arrived very well protected and with no damage to the glass or the frames. However, when I separated the two solar panels in the two pack, I immediately saw one of the doors was in an open position. Upon closer inspection, I saw one of the door latching clips was broken off. I found the broken latch clip at the bottom of the solar panel. I was very disappointed at finding this. Other than the broken clip, the build quality is very good. They do have proper diode protection. MC4 connectors are well made. The panels all put out between 90 and 94 watts when I tested them on a somewhat hazy day. Do I did not expect to get the full 100 watts rated due to the haze. But I am pretty impressed with watts on such a hazy day. Other then the broken clip, they panels appear very good. * * * Update * * * I finally got around to mounting these on my 4Runner. They are wired in series for the 36V 50Ah LiFePO4 (Lithium Iron Phosphate) battery I use to supplement my Bluetti AC180. The power from the solar panels go to my Victron MPPT 100/20 solar charge controller. The solar charge controller charge my 36 volt storage battery. I then run a line directly off my 36v battery into my AC180 solar charging input port. The AC180 charges at around 375 watts per hour to keep it topped off all the time. It works great! In direct sunlight, I get about 270 watts out of the the solar panels. Keep in mind my panels are directly laying flat on the roof of my 4Runner. As such they are not tilted towards the sun for maximum performance. So considering that fact, they are working very well.
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Reviewed in the United States on October 12, 2025 by Steve
Set name: 200W
Panel only gets about 100 Watts I’ve tried all angles. Panel is facing south and tilted to about a 30 degree angle. It doesn’t have a kickstand so be prepared to buy additional equipment to mount it to something
Reviewed in the United States on August 5, 2026 by Austin
Set name: 400W
The solar panel is what the description said it would be and arrived on time as promised works
Reviewed in the United States on August 10, 2026 by Charles Hendryx
Set name: 400W
Great performance at a great price point. Panel size isn’t too big and not too heavy for a single person installation. Very knowledgeable and easy to work with product support. You can’t go wrong with these panels.
Reviewed in the United States on August 3, 2026 by Nola Pagoda