EF ECOFLOW 400W Portable Solar Panel, Foldable & Durable, Complete with an Adjustable Kickstand Case, Waterproof IP68 for Outdoor Adventures
Condition: New
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, 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:
In Stock.
Arrives
Wednesday, May 6
Recently Viewed
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:
Wednesday, May 6
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
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.
...
show more
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.
...
show more
Reviewed in the United States on December 8, 2023 by J. L. Fuentes
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.
...
show more
Reviewed in the United States on September 13, 2025 by Lacey Sloan
Size: 400W Solar Panel
------------- Update #3 --------- I have used it only twice. One time for testing on my deck. And one time for a one night popup trailer camping. The zipper does not work anymore in two areas. For the overall price, I cannot believe that they use such low quality zippers. The panels work. I was able to generate 300W at 4pm in a sunny day in Northern New Mexico. But how do you store the panels without the bag closing? ------------- Update 2 weeks later --------- I tested this 400W panels for one week, and found some weird issues. The panels were left outside in NM. About 90F during the day and mid 50s F at night. They did work to deliver enough power to keep a small fridge running 24/7. However, as I mentioned before, the 2 panels on the side collapsed instead of staying straight. More like a tent. Power was reduced as a result of a less optimal angle. When I decided to stop the experiment, it was about 55F outside in the morning. I could not correctly fold the panels! The 'hinges' were too stiff. I left the panels under the sun for about 3 hours to warm them up so I could close them. It would have been a pain if camping. Worse, the zipper is not a very good quality. This is the first time I tried to close the bag and I could already see some problems with the zipper! One would expect a much better quality for this price. Also I see that they changed the pictures on the Amazon site. Initially it was misleading as a hiker was casually carrying both a Delta 2 and the 400W panels. This is a heavy set. Good that they changed the pictures. Finally, the seller is proposing that I send it back. But this is not a simple return to a UPS drop location. You have to wrap it for dangerous components and go through a FedEx appointment. Far from trivial from where I live. ------------- Original Post ------------- Bought it to charge a Delta 2. Pros: It does the job. Here in NM I can charge from 70% (after keeping a small fridge powered all night) to 100% by 10:30am. Cons: - The picture shows a causal hiker carrying a Delta 2 and the solar array. That's misleading. I guess he does that for just a couple of minutes. The set is heavy! - The pictures are also showing neat straight aligned panels. In reality, the panels cannot be aligned without something else (rope, support). My array looks more like a tent. Meaning that some of the panels are not optimally aligned with the Sun, wasting some energy. - The bag seems too pretty to lay on the dirt. We will see if that is a mud magnet or if it is washable. - The Delta 2 app UI scared me at first. it was showing 0 watts from the panels once the battery is fully charged. I thought that something was wrong. It is just that the battery does not get charged once it reaches 100% until it drops to ~98%. I guess that it makes sense to not charge anymore when the battery is full. But there is no difference in the UI between not charging and the panels not connected (or not functioning). - I think that there is a bug for the end of a sun day. I mean that if the battery starts to be below 98%, it will attempt to charge from the solar source. But at the end of a day, there is only little to no power. The battery keeps trying to turn on charging. There is then a beep every few minutes/seconds. I had to disable the beep from the app to go around that.
...
show more
Reviewed in the United States on August 25, 2023 by Thierry T
Size: 400W Solar Panel
Overall I wish I could give them 5 stars, but cant. The Solar panel arrived In an eco flow box That looked to possibly be resealed. There is slight damage One of the solar cells, Not drastically reducing The performance But when you spend this kind of money You expect them to be perfect out of the box. Great efficiency is close to 75%, which is great. I will update this in a few months to if I will increase or decrease the star rating
...
show more
Reviewed in the United States on August 24, 2024 by dan mueller
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