Wattstanding
EcoFlow 400W Portable Solar Panel (SOLAR400W)

Product image: EcoFlow

Solar panel · EcoFlow

EcoFlow 400W Portable Solar Panel (SOLAR400W)

EcoFlow · 400 W portable folding

The short answer

The EcoFlow 400W Portable Solar Panel (SOLAR400W) is a 400 W portable folding panel. By our calculation it can add roughly 1,560 Wh on an average Florida/Gulf Coast day and 1,260 Wh in the Northeast. EcoFlow lists it at $599, about $1.50 per watt.

Rated power
400 W
Type
Portable Folding
Price seen
$599

Good fit if

  • You want to recharge a power station from sunlight during a multi-day outage
  • Your station's solar input accepts this panel's voltage, current and connector

Look elsewhere if

  • You have not checked your station's solar input limits
  • You need guaranteed charging in winter or under heavy cloud
$599EcoFlow listed price (base model) · seen 30 Sep 2026
View at EcoFlowView at Shop Solar Kits

Every link opens the product page for this exact model. We may earn a commission; it never changes what we publish. Disclosure

How much energy it adds

A 400 W panel produces its rated power only in ideal conditions. Heat, sun angle and cable losses reduce real output; we assume 75% of rating.

Estimated energy per average day, by region
RegionPeak sun hours (approx.)Estimated energy
Florida and the Gulf Coast5.21,560 Wh/day
Texas5.01,500 Wh/day
California5.51,650 Wh/day
Southeast (GA, SC, NC)4.71,410 Wh/day
Mid-Atlantic and Northeast4.21,260 Wh/day
Midwest and Great Lakes4.21,260 Wh/day
Mountain West5.41,620 Wh/day
Pacific Northwest3.61,080 Wh/day
Wattstanding calculationWattstanding calculation — Wh/day = panel watts × 75% × peak sun hours. For example 400 W × 0.75 × 5.2 h = 1,560 Wh. Sun-hour figures are approximate annual averages; winter and cloudy days are much lower.

Pairing it with a power station

A power station accepts solar input only within its own voltage and current limits. Compare this panel's figures with the station's stated solar input before connecting anything.

Practical noteThe sources we read do not state this panel's voltage and current. Ask the seller before pairing it with a station.

Use the solar recharge calculator to see how many sunny days a station needs.

Fit check before you buy

Checks to make against the power station you plan to charge.

✓ Required? Check firsti Good to know
  • ✓Station solar input limitsVoltage, current and watt limits of the station's solar port.
  • ?ConnectorMatch the panel's connector to the station's cable or adapter.
  • iSpace and anglePanels need open sun and an angle toward it; shade on part of a panel can cut output sharply.

Specifications

Each figure is labelled with where it comes from. Numbered references link to the source list below.

Manufacturer storeRetailer listingWattstanding calculationNot verified

Published specifications

Rated power400 W[S1]Manufacturer store
Typeportable folding[S1]Manufacturer store

Wattstanding calculations

Energy per day — Florida and the Gulf Coast1,560 WhWattstanding calculation
Energy per day — Texas1,500 WhWattstanding calculation
Energy per day — California1,650 WhWattstanding calculation
Price per watt$1.50Wattstanding calculation

Limitations to weigh

  • Specifications are the maker's or seller's; Wattstanding has not tested this product.
  • Energy figures are calculations from approximate sun-hour averages, not measurements.
  • Prices change; confirm the price and what is included.

Alternatives worth comparing

Anker SOLIX PS400 Bifacial Portable Solar Panel (AS340111)400 W; same price
Dabbsson 420W Portable Solar Panel420 W; same price
Renogy 400W N-Type Bifacial Solar Panel400 W; $61 more
BLUETTI 350W Solar Panel350 W; same price

Where to buy

2 specialist sellers list this exact product. Prices were observed on 30 Sep 2026; confirm the current price, stock and included items before ordering.

SellerListed priceType
EcoFlow$599Manufacturer store
Shop Solar Kits$599Specialist retailer
$599EcoFlow listed price (base model) · seen 30 Sep 2026
View at EcoFlowView at Shop Solar Kits

Every link opens the product page for this exact model. We may earn a commission; it never changes what we publish. Disclosure

Questions buyers ask

How much power does the EcoFlow 400W Portable Solar Panel (SOLAR400W) produce?
It is rated 400 W. Real output is usually lower; we estimate about 1,560 Wh on an average Gulf Coast day.
Where can I buy the EcoFlow 400W Portable Solar Panel (SOLAR400W)?
2 sellers list it: EcoFlow and Shop Solar Kits.

Sources and verification

  1. EcoFlow — EcoFlow 400W Portable Solar Panel — product page and specifications Retrieved 30 Sep 2026
  2. Shop Solar Kits — EcoFlow 400W Folding Solar Panel — product page Retrieved 30 Sep 2026

Wattstanding has not tested this product hands-on. This reference is compiled from the sources above; our calculations are labelled and show their working. Electrical work belongs to a licensed electrician. Last verified 30 Sep 2026. How we work