EF ECOFLOW 400W Portable Solar Panel, Foldable & Durable, Complete with an Adjustable Kickstand Case, Waterproof IP68 for Outdoor Adventures
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This item is eligible for return within 30 days of receipt
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Availability:
20 left in stock
Arrives
Sunday, Jun 28
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Size: 400W Solar Panel
Features
- [High Performance] With a 400W power input, this solar panel can provide your power station with a significant amount of energy with outstanding efficiency.
- [Extremely Portable] The EcoFlow 400W Solar Panel is foldable and comes with an adjustable carry case. Weighing in at only 16kg (35.3lbs) it can be easily packed up and carried with you, no matter where you go.
- [Weather Proof] This 400W solar panel is built to withstand the elements. Its made from layers of flexible EVA and tough fibreglass to ensure durability and mobility.It also comes with a IP68 Waterproof rating, meaning it is dust and water tight. *Only the main body of this product is waterproof. The junction box and connection points should not be immersed in water.
- [Market-Leading Technology] Designed with Monocrystalline cells, the EcoFlow 400W Solar Panel is able to generate more energy than standard solar panels. Its high transparency allows for a high energy conversion rate.
- [Astonishing Efficiency] When paired with an EcoFlow power station, the 400W solar panel utilises the MPPT algorithm to achieve optimal efficiency rain or shine. Where solar panels are concerned, its conversion rate of 22.4% is astonishing.
Brand: EF ECOFLOW
Material: Eva
Product Dimensions: 93.1"L x 41.7"W x 1"H
Item Weight: 35.3 Pounds
Efficiency: 23%
Efficiency: 23%
Maximum Power: 400 Watts
Output Voltage: 23 Volts (DC)
Connector Type: MC4
Item Dimensions L x W x H: 93.1"L x 41.7"W x 1"H
Item Weight: 35.3 Pounds
Material Type: Eva
Brand Name: EF ECOFLOW
Included Components: Bag
Model Number: EF-Flex-400
UPC: 842783146793
Manufacturer Part Number: Solar Panel
Manufacturer: EF ECOFLOW
Item Type Name: 400W Solar Panel
Unit Count: 1.0 Count
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Jun 28
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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Top Amazon Reviews
Size: 400W Solar Panel
I used two 400W portable solar panels with the 3600WH EF ECOFLOW Delta Pro home battery system after Hurricane Beryl. The ECOFLOW Pro description on Amazon included the words "Solar Generator for Home Use", but the solar panels are sold separately. The solar panels and battery unit were easy to set up. Battery can be charged quickly from wall outlet and much slower from solar panels. Battery has 4 AC outlets. Although it is fairly heavy, battery unit comes with wheels and a collapsible handle similar to today's travel bags. Solar panels are a slow way to recharge and totally dependent on sun. They work well for 4-5 hours at mid day in SE Texas, but do not work at night and work poorly in the morning, evening and when cloudy. However, the 800W's of solar panels I used produced a peak of 695W at mid day with no clouds. I have experience with 12 roof top solar panels and this performance by these folding, portable panels is very good. I used the system to power my refrigerator (about 5 hours each day), my entertainment system (including TV, DVR, DVD player, sound system, WiFi, laptop), a lamp and a radio phone. I also, when needed, used it to power a garage door opener, chain saw, microwave oven, hair dryer and recharged backup batteries for my iPhone, home security base station and fiber optic cable connector. Solar panels come with water resistant, padded carrying cases that are also designed to support the solar panels if you need them at an angle.
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Reviewed in the United States on July 12, 2024 Reviewed in the United States on July 12, 2024 by Bruce C.
Size: 400W Solar Panel
Excellent product
Reviewed in the United States on April 6, 2026 by Joel
Size: 400W Solar Panel
I bought this panel along with an Ecoflow Delta Pro so that I could power my garage related appliances and electronics. I am currently running my garage refrigerator, a couple of battery maintainers for my cars and a motion activated light that comes on when I walk into the garage. The panels does a good job of charging my Delta Pro on most days and even charges a bit on hazy days, but of course not as much. It's winter time now and the sun is low in the horizon and shines fewer hours than in the summer so I'm thinking that I will be able to connect more things to it once summer rolls around. So far I am very pleased with its performance and I think it is only going to get better. The panel is portable but it does weigh a little bit due to its robust construction. I prefer that it is tougher and a bit heavier than lighter and flimsier, especially if it is going to moved about from place to place. It's not exactly cheap, but then you do get what you pay for and this is worth the price.
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Reviewed in the United States on December 8, 2023 by J. L. Fuentes
Size: 400W Solar Panel
Very large and powerful panels. I do not use the provided case hooks and lean the panels against my garage wall instead … make for a much simpler setup. Very pleased with output as I can typically get 365 watts input to the EcoFlow Delta Pro helping to expedite the refill process.
Reviewed in the United States on June 6, 2026 by TMM
Size: 400W Solar Panel
I’ve always been interested in solar energy ever since I first heard about it in the early ‘70’s. I am SO excited to finally have this Portable 400W solar panel to use to power my EcoFlow Delta Pro Ultra(?). The 400W Solar panel even came with a zippered carrying case. I bought the flexible, portable solar panel. It is a lot heavier than I expected, but not so heavy that I can’t lift and carry it as a “senior citizen”. I believe it comes with a short cable compatible with the EcoFlow Delta Pro Ultra but don’t quote me on that. I did buy a longer cable so it would reach into the sunny part of our yard while keeping the Delta Oro Ultra inside.
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Reviewed in the United States on September 13, 2025 by Lacey Sloan
Size: 400W Solar Panel
I love this.. Set in sunshine and attached to my Ecoflow Delta 2, My home refrigerator will run all day and the solar generator stays charged for night time use.
Reviewed in the United States on April 10, 2026 by SlimPicns
Size: 400W Solar Panel
I was very excited to have this item as part of my gear! When I first received it and tested prior to my trip, I was slightly impressed. The stand is garbage. The panel is VERY heavy. No insulation. However, I did see about 360w of input power on my Delta. While I was still 40w short of the max - I was still OK w/ it. However, after I packed it up and took it to the music festival - the MAX I gained was about 250-260W. Full sun. I hit up EcoFlow support and they wanted this and that, which was unavailable to me in the field. Once I returned back home, I reopened the support issue. Support informed me the panels can reach ~140 degrees F - and if it does so, the efficiency decreases by ~13%. This would have been AWESOME to know ahead of time. Instead, I found out the hard way. The panels got so hot, they melted the paint on my car! The stand was garbage, as it is very thin compared to the expanse of the panels, so I had to use a larger stationary item to prop them up and point at the sun. And welp, the panels got so hot (from the awesome sun they received), it legit MELTED my paint job - which was factory, not custom. My friend and I also burnt our fingertips / hand in attempts to keep it adjusted at 90 degrees to the sun. All of this effort, damage and injury - yet we saw a MAX of 260W input to the Delta 1300W system. Needless to say- none of these details were documented ANYWHERE. There are no user manuals or WARNINGs available. This information was attained ONLY AFTER contacting support!!!!!! I am reaching out to lawyers at this time to see how to get right due to these negligent circumstances. Also, worthy of note - my friends and other nearby campers had the Jackery system. While the charge time is greater, they all did BETTER than me keeping their systems charged and running over the 5 days. Also, the Jackery panels were insulated so you could move them without burning your hands. After this experience, I am totally good w/ a longer charging time that comes at the expense of my other possessions as well as my health. Bottom line: look elsewhere if you desire something to keep you going off the grid. If I could get by w/ AC only, this would be the move, as the solar panels are not needed. But.. if you want to go off grid - go elsewhere!! Also good to note - EVERY MODEL except the DELTA can be monitored via an app on Apple/Android... Update 7-3-2022 - after informing support of the heat issue, they asked me to return the panel back to them directly for investigation. Not sure where this will go, if anywhere, but at least they have shown an interest in the root cause of their product. Update 7-14-2022: I rcvd a different panel by allpower (200w 18v prime day spcl). Multimeter showed good output around at least 180w. Delta would not show more than 110w input. I hit up support w the info on the same thread. Wondering if their 400w panel was defective and blew the mppt controller in the delta unit. More to come. 7-20-2022: I heard back from support. The solar panel was certainly defective. They offered to refund my Delta purchase. Decided to return the Delta b/c I do not trust it w/ the ancillary testing. Will likely go with a more reliable unit. I initially selected EcoFlow for the rapid wall charging capabilities combined with the high solar input feature. I mean, they had GREAT reviews, too! They declined to do anything about the damage to the paint on my vehicle, stating the operating temp is 70 C (~150F). Personally, I would not go outside in that heat. Humid 115 is challenging enough for me! I know this is likely an isolated incident - candidly, my luck is generally horrible. In short, the products let me down in the field and caused me more headaches and stuff to repair. BUT(ish), the company refunded the initial purchase price. Take it as you will and happy hunting for fun gear!
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Reviewed in the United States on June 25, 2022 by AustinGSmith
Size: 400W Solar Panel
When I first took the solar panel out of the box and set it up to with the kickstand, I noticed how it did not hold up firmly as the weight of the panels made the whole thing want to slide down or topple over. Then I was worried they didn't work when I connected them to the Ecoflow Delta Pro Power Station because there was no input reading. When it is cloudy, hazy, or even when trees are obstructing the sunlight, there is no charging taking place. Late afternoon around 5 or 6 pm is not a good time of day. Then I tried 10 am to 4 pm while laying the panels flat on the ground and then on a patio roof. This time there was an input of around 200-300 watts. The only issue is that it takes a long time. Several hours just to get to 25% power. Overall not a good investment.
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Reviewed in the United States on May 20, 2024 Reviewed in the United States on May 20, 2024 by Brian Nguyen