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EcoFlow 220W Bifacial Portable Solar Panel vs Anker SOLIX PS400 Portable Solar Panel

The Anker SOLIX PS400 is the better pick for most people: it delivers nearly twice the rated wattage from one panel, is IP67 waterproof, and still hits 23% efficiency. The EcoFlow 220W is lighter at 9.5 kg and its bifacial design can pull extra power from reflected light, which suits backpackers and tight setups. Owners of both praise the build and kickstand, but the PS400's higher voltage (48V) means you must check your power station's input limit before buying.

  • Choose the EcoFlow 220W if you carry your panel on foot, want the lighter bifacial option, and your power station caps solar input below 48V.
  • Choose the Anker SOLIX PS400 if you want maximum wattage from a single folding panel and need it to survive rain and dust.

Prices

  • EcoFlow 220W Bifacial Portable Solar Panel: $186.99 at eBay (last seen Nov 9)
  • Anker SOLIX PS400 Portable Solar Panel: $699.99 at Ironclad Sentry (last seen Nov 9)
  • Difference: the EcoFlow 220W Bifacial Portable Solar Panel is $513.00 cheaper than the Anker SOLIX PS400 Portable Solar Panel at the latest prices (Nov 9)
EcoFlow
EcoFlow 220W Bifacial Portable Solar Panel

EcoFlow 220W Bifacial Portable Solar Panel

$186.99at eBayChecked Nov 9
See all prices and details
Visit eBay

Store links may earn us a commission.

Pros
  • Bifacial design captures light reflected off snow, sand or water
  • Light enough for one person to carry on a hike
  • 18.4V output works with a wide range of smaller power stations
  • Kickstand case doubles as protection in transit
Cons
  • Half the rated wattage of the Anker
  • No waterproof rating, so rain is a risk
  • Needs a reflective surface to realize its bifacial gain
Anker
Anker SOLIX PS400 Portable Solar Panel

Anker SOLIX PS400 Portable Solar Panel

$699.99at Ironclad SentryChecked 12 h ago
See all prices and details
Visit Ironclad Sentry
Pros
  • 400 W from a single folding panel cuts recharge time
  • IP67 rating handles rain, dust and splashes
  • 23% efficiency keeps the panel reasonably sized for its output
  • Ships with a 3m MC4 cable
Cons
  • Heavy at 15.9 kg for one person to move far
  • 48V operating voltage exceeds the input limit of some smaller stations
  • Monocrystalline front side gives no gain from reflected light

What separates them

EcoFlow 220W Bifacial Portable Solar PanelAnker SOLIX PS400 Portable Solar Panel
Rated wattage220 W400 W
Panel typeBifacial, gains from reflected lightMonocrystalline, front-side only
Weather protectionNot rated waterproofIP67 waterproof and dustproof
Weight9.5 kg15.9 kg
Operating voltage18.4V Vmp, friendly to small stations48V, needs a station rated for it
Conversion efficiency23%23%
Included cableKickstand case only3m MC4 cable
Folded footprintCompact at 82 x 183 x 2.5 cmLarger unfolded at 102 x 35.9 x 1.2 in

Price history

$899.99$399.00
Nov 1Nov 10
  • EcoFlow 220W Bifacial Portable Solar Panel: lowest $399.00 on Nov 1 at Amazon; $430.89 on Nov 9.
  • Anker SOLIX PS400 Portable Solar Panel: lowest $699.99 on Nov 9 at Green Vista Living; $899.99 on Nov 10.

Prices at every store

EcoFlow 220W Bifacial Portable Solar Panel

  • TS2 SpaceNew

    In stock

    $430.89+ $2.00 shippingChecked Nov 9
    Visit TS2 Space
  • The Home DepotNew

    In stock

    $545.76Free shippingChecked Nov 9
    Visit The Home Depot
  • eBayNew

    Availability unknownSold by e-powo (100% positive, 199 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $186.99Free shippingChecked Nov 9
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $399.00Checked Nov 1
    Visit Amazon

Store links may earn us a commission. Some prices via Klarna.

All 8 stores and price history →

Anker SOLIX PS400 Portable Solar Panel

  • Ironclad SentryNew

    In stock

    $699.99Free shippingChecked 12 h ago
    Visit Ironclad Sentry
  • Vital Home USANew

    In stock

    $699.99Free shippingChecked 12 h ago
    Visit Vital Home USA
  • Green Vista LivingNew

    In stock

    $699.99Free shippingChecked 13 h ago
    Visit Green Vista Living
  • SolarisNew

    Availability unknown

    $699.99+ $1,500.00 shippingChecked 12 h ago
    Visit Solaris
All 12 stores and price history →

Specs compared

SpecEcoFlow 220W Bifacial Portable Solar PanelAnker SOLIX PS400 Portable Solar Panel
Conversion Efficiency23%23%
Voltage18.4V (Vmp)48 V (operating)
Wattage220 W400 W
Amperage8.8 A (Rear, Short circuit current)8.33 A (Max Electric Current)
Electrical Current12A8.33 A
Solar Panel Wattage220 W400 W
Solar Panel TypeBifacialMonocrystalline
Solar Panel Voltage18.4V (Vmp)48 V (operating)
Solar Panel Dimensions82 x 183 x 2.5 cm102 × 35.9 × 1.2 in (unfolded)
Solar Panel Efficiency23%23%
Solar Panel Weight9.5 kg15.9 kg
Input Voltage21.5V48 V
Show all 26 specsShow fewer specs
SpecEcoFlow 220W Bifacial Portable Solar PanelAnker SOLIX PS400 Portable Solar Panel
Power Rating220 W400W
Power Amperage8.8 A (Rear, Short circuit current)8.33 A (Operating Current)
Power Capacity220 Watt400 Watt
Power SourceSolarSolar
Kit Included ItemsKickstand case3m MC4 cable
Rated Power220 W400 W
Peak Power157 W (Bluetti PV200)400 W
Technology TypeOff-GridOff-grid
Mounting TypeKickstand caseKickstand

What reviewers say

EcoFlow 220W Bifacial Portable Solar Panel

Owners of EcoFlow's bifacial panels generally report solid charging performance in direct sun and like the built-in kickstand. The common complaints are weight and bulk for portability, and real-world output below the 220W rating unless conditions are ideal.

What people mention
  • OutputMixedOwners see good charging in full sun but rarely the full 220W.
  • Bifacial gainPraisedThe rear face adds measurable watts when set over light, reflective ground.
  • WeightCriticisedAt 9.5 kg it is heavy to carry far from the car.
  • BuildPraisedThe folding case and kickstand feel sturdy and protect the cells.

Anker SOLIX PS400 Portable Solar Panel

Owners appreciate the sturdy construction and high power output, often noting it meets expectations in full sun. Some find the weight and size cumbersome for frequent transport. A few mention that real-world output is lower than rated in less-than-ideal conditions.

What people mention
  • Build qualityPraisedReviewers say the panel feels rugged and well-made, with durable materials that withstand outdoor use.
  • WeightCriticisedAt 15.9 kg, it is considered heavy for a portable panel, making it less suitable for backpacking or frequent moves.
  • Power outputMixedUsers report strong output in full sun but note it falls short of 400W in shade or clouds.
  • PortabilityMixedThe foldable design helps, but the large unfolded size and weight limit how portable it feels.

Questions and answers

Which is better for camping and backpacking?
The EcoFlow 220W. It weighs 9.5 kg versus 15.9 kg and folds smaller, and its 18.4V output suits the small power stations most campers carry.
Which charges a power station faster?
The Anker PS400, on paper, because it is rated at 400 W against 220 W. In real sun both fall short of their rating, but the Anker still leads. Check that your station accepts 48V first.
Does the bifacial panel really make a difference?
Only when light bounces back onto the rear side, such as off snow, sand, water or a white tarp. On grass or dark ground the gain is small, so treat 220 W as the realistic figure.
Can I leave the Anker out in the rain?
Yes. It carries an IP67 rating, so rain and dust are not a concern. The EcoFlow has no waterproof rating and should be brought in or covered when it rains.
Which lasts longer?
Both use tempered glass and sealed frames, and owners of each report years of service. The Anker's IP67 sealing gives it an edge in wet or dusty conditions; the EcoFlow's lighter build is easier to knock over, so stake it down.
Is the Anker worth stepping up to from the EcoFlow?
If you have a power station that accepts 48V and you mostly charge at a base camp, yes. If you carry the panel or own a small station, the EcoFlow fits better.

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Adjustable Mounting
Yes
Yes
Battery Capacity50Ah extendash200Ah (range of compatible lithiu…—
Electrical Efficiency23%—
Frequency—50 Hz
Width (")—90.2