EF EcoFlow

EcoFlow 400W Portable Solar Panel, Foldable and Waterproof For Outdoor

|74 ratings
Item # 990298818
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Smart summary

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  • Powerful Efficiency: Features 400W output and monocrystalline cells, achieving up to 23% solar conversion efficiency for faster charging of portable power.
  • Portable Design: Boasts a convenient folding design and lightweight 27.5 lb construction, making it easy to carry, reposition, and store for various outdoor activities.
  • Rugged Durability: Constructed with durable, multi-layered materials and an ETFE film, offering high impact resistance and an IP68 rating for all-weather use.
  • Integrated Stand: Includes a protective case that ingeniously doubles as a sturdy supporting stand, allowing for convenient angle adjustment to maximize sun exposure.
  • Versatile Application: Ideal for converting sunlight into clean, renewable energy, perfect for camping, RVs, home use, and off-grid living adventures.
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5 out of 5 stars
5 out of 5 Stars. 5 reviews
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ecoflow 400w portable solar panel, foldable and waterproof for outdoor front-facing view of a fully unfolded four-panel monocrystalline array with dark textured cells, visible hinge seams, corner grommets, and a carry tab on the right; flat white background, shown laid flat and suitable for camping, RVs, and portable charging.
EcoFlow 400W Portable Solar Panel, Foldable and Waterproof For Outdoor
Hero image 0 of EcoFlow 400W Portable Solar Panel, Foldable and Waterproof For Outdoor, 0 of 8

About this item

Product details

The EcoFlow 400W portable solar panel offers higher wattage and better efficiency than standard solar panels thanks to their monocrystalline cells. Unlike fixed solar panels, portable solar panels can be easily repositioned and adjusted to follow the sun's movement throughout the day.

Convert sunlight into clean, renewable energy using 400W portable solar panels, perfect for camping, RVs, and home use.

Our 400W portable solar panel offers high solar output, conversion efficiency rating, and a convenient folding design so it’s ready to grab and go at any time.

A single solar panel with a unique folding design, our 400W solar panel combines powerful energy production with portability. To achieve a higher solar conversion efficiency of up to 23%, we use multi busbar monocrystalline cells, so you get even more energy to recharge your portable power.

EcoFlow's 400W portable solar panel comes complete with a protective case that doubles as a sturdy supporting stand. Simply set up your panel anywhere and conveniently adjust its angle to get the most sun possible.

Made from durable and flexible materials, the portable solar panel is perfect for off-grid living and travel. Its multi-layered design offers high impact resistance for the rugged outdoors, while its 27.5 lb light-weight means effortless carrying to a campsite. A rigid layer embedded in the carry case protects the panel from overbending when you carry or store it.

Our 400W portable solar panel can carry on collecting energy even during a downpour. With a protective ETFE film and a high IP resistance level of 68, the solar cells can withstand environments from humid and wet to dry and dusty.

EcoFlow’s 400W solar panel is a camping or RV must-have. The compact design saves valuable space for your other travel essentials. When you’re ready to head off on your next adventure, simply collapse the panel down to store in your van or car.

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Specifications

  • 42.0*94.1*1.0 in (106.8*239.0*2.4cm)
  • Monocrystalline silicon

    • Member ratings & reviews

    4.7 out of 5 stars
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    74 ratings69 reviews
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    1. 5 stars78% (58)
    2. 4 stars19% (14)
    3. 3 stars1% (1)
    4. 2 stars0% (0)
    5. 1 star1% (1)
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    Showing 1-3 of 69 reviews

    Jan 2, 2026
    Reviewer name: James
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    Powerful, Well-Built, and Easy to Use

    The EcoFlow 400W Portable Foldable Solar Panel has been outstanding. It delivers strong, consistent power in good sunlight and pairs perfectly with EcoFlow power stations. Setup is quick, the folding design is convenient, and it’s easy to reposition to track the sun. Build quality is excellent—sturdy materials, solid connectors, and it feels made for outdoor use. Despite its size, it’s manageable to transport and stores neatly when folded. This panel has been a reliable way to recharge during outages and off-grid use. If you need serious portable solar power, this panel is worth the investment. Highly recommended.

    Review from walmart.com
    Helpful?5GV3VCXDVR1J13615203498
    Jun 24, 2023
    Reviewer name: Rooster326
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    Great so far

    Hoked up a single 400 watt panel. I live in orlando florida so sun is always available With some adjustment it was pushing 300-325. I purchased a second panel but havn't tried them in series yet. I hope to get 600-700 watts. I think it will do the job with an extra battery. .

    Review from ecoflow
    Helpful?5GV3VCXDVR1J13615203498
    Jun 2, 2023
    Reviewer name: CAMartino
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    More than i expected!

    These panels have far exceeded my expectations. I use these panels in conjunction with my Honda ES2200 to charge my Ecoflow Pro which in turn supplies power to my RV Trailer. The panels typically supply 250 to 275 watts on a sunny day leaning against my trailer. When laid out more flat to the ground I've seen as much as 380 watts. These panels are heavy and a little pricey, but I believe it's money well spent and plan to purchase at least one more set..

    Review from ecoflow
    Helpful?5GV3VCXDVR1J13615203498

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