DOKIO 400W 31V Mono Solar Panel - Works for 12V/24V Systems, Equipped with 9.84ft MC4 Wiring, Perfect for Gardens, Courtyards, Greenhouses, Sheds, Terraces & Off-Grid Battery Charging
Condition: New
Buy Now, Pay Later
As low as
$41.63
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
30-day refund / replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
Only 10 left in stock, order soon!
Arrives
Jun 8 – Jun 9
Recently Viewed
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.
Brand: DOKIO
Material: Aluminum, Monocrystalline Silicon, Tempered Glass
Product Dimensions: 67.8"L x 44.6"W x 1.2"H
Item Weight: 49.38 Pounds
Efficiency: High Efficiency
Efficiency: High Efficiency
Maximum Power: 400 Watts
Connector Type: MC4
Item Dimensions L x W x H: 67.8"L x 44.6"W x 1.2"H
Item Weight: 49.38 Pounds
Material Type: Aluminum, Monocrystalline Silicon, Tempered Glass
Brand Name: DOKIO
Included Components: Bag
Model Number: Solar panel-DSP-400M
Manufacturer Part Number: FBA-DSP-400M
Manufacturer: DOKIO
Item Type Name: solarpanel
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jun 8 – Jun 9
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.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
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.
...
show more
Reviewed in the United States on December 14, 2025 Reviewed in the United States on December 14, 2025 by Living Life
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... :}
...
show more
Reviewed in the United States on May 13, 2026 by Steven Harper
Set name: 800W
Shipped very fast. panels in fantastic condition when arrive, great packaging, including corner protectors in the box, panels work as advertised. Great value for panels this size, will be purchasing more.
Reviewed in the United States on April 4, 2026 by Cacy
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 does 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.
...
show more
Reviewed in the United States on October 12, 2025 Reviewed in the United States on October 12, 2025 by Steve
Set name: 800W
Love these panels for the price they work amazing
Reviewed in the United States on April 7, 2026 by Donnie A
Set name: 100W*2-kit
I just bought some of these 200W kits. I am somewhat of a neophyte, but for now these seem to be working OK. Time will tell. I tested them in pretty good sunlight, but the panels were on the ground not perfectly aligned with the sun or anything, and at one point I got 323W when I hooked two in series. This shows me that they are basically working, but I need to install them on the roof, etc. There are some "issues" with the ad, as it turns out. These existence of these issues and the fact that there have been no replies made me switch what would have (naively?) been 5 stars to 4 stars. Issue 1: The ad images and specs suggest you get two 100W panels. You get (at least I got so far) one 200W panel per kit. The panels are labeled on the back, and have the same voltage and twice the amps of the 100W panel shown in the ad. I alerted the seller (DOKIO) and there has been no reply to me and no change to the ad. Maybe it takes time... Issue 2: The ad shows two images that show how to wire these panels. Each image shows series and parallel wiring. It is my opinion that one of the images is incorrect for series wiring. I alerted AMAZON and there has been no reply to me and no change to the ad. Maybe it takes time... 2025-04-19 update: I noticed what I bought is no longer offered by the seller, but a 200W kit with a picture of a single panel is shown now. So I suspect the product is still available, just under a different ad. I noticed the series-parallel picture is gone from the pictures you can browse at the top of the ad, but in the body of the ad there remains the picture of the series hookup that I believe is wrong (has ++). (They got rid of the correct picture that had +- instead of ++.) (If anyone out there can prove I'm wrong, I'll all ears.) I also noticed that the "specs" were labeled 200W but the numbers still seemed to be for the 100W panel, e.g., maximum power 100W instead of 200W. I have tested four of these panels by just placing them on the ground. At one point I measured 616W (the max I noticed in a 4-panel 2S2P configuration), which I consider acceptable under the circumstances. I am leaving the rating at 4 stars, although, come on -- placing a new ad with a single-panel main picture but also removing the (I claim) correct series picture and not checking the rest of the ad and making appropriate changes? This lack of thoroughness seems not to be reflected in the product itself. I doubt I'll check the ad and update this review. 2025-04-22 update: my second batch of four 200W solar-panel kits arrived yesterday. Instead of four 200W panels, four 100W panels were delivered. (I did not open the boxes. The boxes were half the size of the 200W panels.) Because of the arrangement between the seller and AMAZON, all I was able to do is return these four panels for a refund and free shipping pickup. To get the four 200W panels, I had to make a new order. The price is higher now. And there is a wait of 1 to 2 months before delivery, assuming 200W panels are delivered. And I am changing my review to 3 stars. The four panels I already own have worked fine every time I tested them, but they are out of service now until and if I get my project completed. My project is on hold now owing to a lack of panels.
...
show more
Reviewed in the United States on April 17, 2025 by robv14000
Set name: 200W-kit
These look like quality solar panels, but the way the manufacturer packaged them, they should never have gone through a shipper. The packaging is more suitable for a retail location and one of the two which I ordered was shattered and the second one which was not broken did have dented corners.
Reviewed in the United States on December 19, 2025 by Leah Jacobs
Set name: 800W
These solar panels are good for the price as far is my limited experience with solar is concerned. Was able to get over 330v peak Jan 1 at about 11:50 when the NY temp was 29 degrees from just one of the 400w panels. Have not connected the other yet but am optimistic that it will perform just like the first. Must advise that these panels are super huge and heavy though. Connected it to a power station which I also got from Amazon and was pleased with the charge rate. This result encourages me to expand my solar power interests. UPDATED REVIEW. These panels are capable of outputting even more than the nominal peak power. Was able to get 838 watts form the two 400 watt panels connected in series while feeding a 3600W, 3840Wh power station. Panels are inclined southwards at about 50 degrees in NYC at mid-day in January.
...
show more
Reviewed in the United States on January 9, 2026 Reviewed in the United States on January 9, 2026 by Stanley