Buy Now, Pay Later
As low as
/ mo
Learn more
- – Up to 36-month term if approved
- – 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, Zip, Apple Pay, and Google Pay. 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
Saturday, Oct 24
Recently Viewed
Set name: 400W*2
Features
- [800W CAPACITY] Two 400W panels deliver 800W (STC)size your controller/inverter for the combined current; MPPT strongly recommended.
- [PARALLEL FIRST ON 12V] Prioritize parallel on 12 V for safer voltage and steadier charging; series only when your controller supports higher input voltage.
- [3 m LEADS PER PANEL] 3 m MC4 leads on each panel enable longer reaches without immediate extensionsfewer added connectors, simpler runs.
- [LESS HARDWARE THAN 8100W] Compared with eight 100W panels, youll have far fewer joints/branch connectors, reducing failure points and time on the roof.
- [BUILT FOR OUTDOORS] Tempered glass + aluminum frame with sealed junction boxes for year-round yard/garden installations.
Description
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. We’re committed to making your outdoor life easier, greener, and hassle-free, backed by our proven expertise and global customers’ trust.
Brand: DOKIO
Material: Aluminum, Monocrystalline Silicon, Tempered Glass
Product Dimensions: 44.6"L x 2.4"W x 67.8"H
Item Weight: 49.3 pounds
Included Components: Bag
Amperage Capacity: 13.9 A
Maximum Voltage: 31 volts
Maximum Power: 800 watts
Output Voltage: 31 volts
Connector Type: MC4
Item Dimensions L x W x H: 44.6"L x 2.4"W x 67.8"H
Item Weight: 49.3 pounds
Material Type: Aluminum, Monocrystalline Silicon, Tempered Glass
Brand Name: DOKIO
Included Components: Bag
Model Number: DSP-400M-2PCS
Unit Count: 1 Count
Number of Items: 1
Number of Packs: 2
Item Highlight: Two 400W panels with 9.84 ft cables,aluminum frame and pre-drilled holes; built for yards, sheds,and off-grid installations
Manufacturer Warranty Description: 5
Item Type Name: solarpanel
Manufacturer: DOKIO
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.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
![[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
The original 100 Watt solar panels have a lighter frame and are therefore lighter in weight than the heavier framed Renogy 100 Watt panels that look and perform virtually the same. I used four of the lighter weight DOKIO 100 Watt panels to construct two pairs of panels that are piano hinged on one side. I attached a cam action sash lock (to hold them closed) and a carrying handle on the other side. I sealed each of the screw locations with Loctite PL Marine Fast Cure Adhesive Sealant to prevent moisture entry. I positioned the solar panel sides to the inside of the hinge configuration to protect them during transport and carry. These two hinged assemblies when opened and wired together provide a nominal 400 Watt solar panel array. Note - the following information applies to DOKIO's original 100 Watt solar panels, not the 150 Watt panels described here on Amazon. Depending on your charge controller, you can wire the four 100 Watt panels in parallel (high 23 Amps/low 22.5 Volts) or in series (high 90 Volts/low 5.75 Amps). Another alternative (depending on your charge controller limits) would be to wire each pair in series (45 Volts/5.75 Amps) and then wire the pairs in parallel (45 Volts/11.5 Amps). The higher volts and lower amps can use smaller wires (10-12 Ga.) to efficiently (and safely) transport the power from the solar panel array to the charge controller if the charge controller is rated to handle more than 45 volts or 90 volts respectively. Update January 31, 2019 - At Ricky's request I added some pictures. Keep in mind that solar panel Wattage ratings are calculated under PERFECT conditions (the PANEL at 77 degrees Fahrenheit [not the air around it], 100% clean air and the panel perfectly aligned to the sun's rays). Virtually all solar panels will produce only about 70-80% of the panel's rated wattage in hot summer temperatures (-5% per 18 degree increase in the PANEL's temperature over 77 degrees). On the other hand, they can typically produce MORE power than the panel's rated wattage on very cold and bright sunshine days (+5% per 18 degree decrease in the PANEL's temperature below 77 degrees) so make sure your charge controller can handle the higher power if you plan to use these under very cold conditions. I discovered that I also need to work on controlling the RFI caused by the combination of my Chinese Manufactured MPPT charge controller and a 600 Watt Inverter ... RFI is not a good thing for operating Amateur radio equipment. Update March 23, 2019 - I have replaced my extremely RFI-Noisey Chinese Manufactured MPPT Charge Controller with a Morningstar PWM SunSaver Model SS-20L-12V that is compliant with FCC Part 15 rules regarding RFI control (made in Taiwan). Another Ham reported that this Morningstar PWM solar charge controller does not produce any RFI on his HAM system where he has connected his radio directly to the "Load" terminals on this model. Unlike most other solar charge controllers that allow only low-power lighting to be connected to their load terminals, this Morningstar charge controller's instructions describe full capacity loads (20 Amps in this case) can be connected to the charge controller's load terminals. This controller also includes a Low Voltage Disconnect (LVD) circuit that will shut the load terminals off if the battery's voltage drops enough to damage the battery if it is discharged any more. I will not operate my RFI-noisy DC-to-AC Inverter during Field Day. The FCC Part 15 rule compliant inverters cost in the neighborhood of $1,500-$2,000 and that high cost puts them beyond my budget. I haven't finished my portable power station for Field Day at this point but I will update this post after I get it operational and can determine if the charge controller produces any RFI on my Kenwood TS-2000 radio. Update June 27, 2019 - I updated my Field Day SLA AGM battery bank to a pair of Bioenno Power 12V, 20Ah Lithium Iron Phosphate (LiFePO4) Batteries and used only one of my 200 Watt panel arrays. The Morningstar Charge Controller mentioned above is designed to be used on Sealed Lead Acid (SLA), AGM or Flooded Lead Acid type batteries and does not work with Lithium batteries. To charge my new Lithium batteries I purchased a Genasun GV-10-Li-14.2V, 10.5 Amp 12 Volt MPPT Solar Charge Controller. I was concerned that its 10.5 Amp current limit might not handle the two DOKIO 100 Watt solar panels. However, in the 90 degree Fahrenheit heat (panels were hotter) and partly cloudy skies we had on Field Day this year, the panels (wired in parallel) averaged about 7 total Amps so no problem. I also used my older Kenwood TS-440SAT HF radio on Field Day and it worked very well. The Genasun Charge Controller (like the Morningstar) did not produce any RFI on the radio at all! We operated the TS-440SAT HF radio all day on Saturday on one battery and only changed over to the second battery around 9:00 PM and used that second battery Saturday evening until ~1:45 AM on Sunday morning when we shut down to get some sleep. We re-started at 7:30 AM Sunday morning and continued using the second 20aH Lithium battery until we shut down at the end of Field Day. The DOKIO solar panels did a good job on Saturday in spite of the 50% clouds (and a 20-minute rain shower). Sunday was mostly cloudy which limited the power from the two 100 Watt cells to about .12 Amps. Overall these solar panel's light weight and performance worked very well to build my small portable solar power system.
...
show more
Reviewed in the United States on August 16, 2018 by Scouter III
Set name: 100W
I have not had a chance to use it. But it seems to be well-made also comes with MC four connectors so I will probably be getting a couple more of these to complete my set up.
Reviewed in the United States on September 21, 2026 by lionel williams
Set name: 400W*2
These were the cheapest solar panels and I needed only 4 in total. I ordered these 400W panels which are actually 410W according to their specification tag on the panels. Sadly with two panels installed the max Watt I can get with a solar tracker is 500W - VERY VERY disappointing... I cannot recommend this brand with such a bad outcome. I guess you get what you pay for sadly :/ 4 of those panels produce maximum 1000W .. pretty disappointing. Can't recommend these panels at all.
...
show more
Reviewed in the United States on July 10, 2026 by Bernie
Set name: 400W*2
Panels deliver around 300 watts the temperature has been in the 80s so the watts will be lower. Also I do not have them at the optimal angle. I have two hooked up to a ecoflow stream, I will have 4 hooked up when I mount them to my Shed. I'm happy with them. Easy set-up with the ecoflow stream, plug them in and plug the stream into the wall socket and your making power. In Utah you can have plug in solar up to 1200 Watts. I should have around 1200 Watts when I'm done. Panels always give you less than rated unless, they are cold and at the right angle.
...
show more
Reviewed in the United States on March 21, 2026 by Markh21518
Set name: 400W*2
I rarely get above 1/2 the expected wattage even with nearly directly impacting sunshine. Voltage is suitable, I love the long cables, frame is a little less stout but should work. I would not buy these again however.
Reviewed in the United States on September 17, 2026 by Amazon Customer
Set name: 150W
I built several strings of '100watt 12volt' panels, most of them yielded nowhere near 100 watts - But These, oboy some produced MORE than their 150w claim I cannot wait to buy MORE as much as my feeble budget can bear these are GREAT ! ! Update. Unfortunately the next order has not been delivered and there is no sign DOKIO will ship it at all the same item still posted for sale, no delivery
...
show more
Reviewed in the United States on May 14, 2026 by John Groleau
Set name: 150W
Improperly packaged, missing foam padding. Box damaged and shows that it has been open and re-taped with just a few pieces if tape. This is my fifth panel and unlike this one they were all padded with foam. Fortunately the panel was not physically damaged. The sixth one is still underway. Otherwise I would have given a 5 star. Those are 150 watts panels and gives 135w under the winter sun of Arizona' mountains, really happy about the performance. Unfortunately they are not available anymore, I had to order two 200w panels from DOKIO to finish my installation. They are more expensive.
...
show more
Reviewed in the United States on January 24, 2026 by Rock Dubois
Set name: 400W*2
Very well packaged and shipped. Operation was very good. I have 4 in series and performance is as advertised. The output connector setup is for series wring. If an extension solar power cord is used, some come with extra connectors , tools for installing connectors, so you can modify the setup. There are pre-punched holes for mounting on the longer sides. There are no holes for mounting on the end sides. So if you want mount them horizonal, you will have to drill 1/4 inch holes. Be sure to insert wood or some backing when drilling so as you don't damage the solar panel. 4 stars because I had to take the time to drill the holes. Currently I have a temporary setup for testing and they will be moved to the roof in 30 days. I am using these panels with a Pecron FP5000LF with a 5000 watt second battery.
...
show more
Reviewed in the United States on September 30, 2026 by Larry A.