Printed as "Rated Power 220W (±5W) Front Side 175W (±5W) Rear Side" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Front side; the rear side is printed as 175W.
The EcoFlow 220W Bifacial Portable Solar Panel (EF-Fold-G220-04)_User Manual prints "Efficiency 25%" in its Specifications table with no cell or module label, and EcoFlow's US store listings for its 25% portable and modular panels print "Up to 25% conversion efficiency" with no label either. The figure is shown as printed; it is not counted as a documented module efficiency.
Printed as "Efficiency 25%" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Printed as "Efficiency" without saying cell or module. EcoFlow's US store listings for its NextGen 160W, NextGen 220W Bifacial, 220W Bifacial and 125W Bifacial Modular panels print "Up to 25% conversion efficiency", also without saying cell or module (read September 29, 2026, not cited). Revised on 29 September 2026: EcoFlow prints "Efficiency 25%" without saying whether it is the cell or the module efficiency, and no EcoFlow document read says either, so the figure is kept as printed with a warning rather than asserted as module efficiency.
Printed as "Optimal Operating Voltage 18.4V" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026.
Printed as "Optimal Operating Current 11.9A Front Side/9.5A Rear Side" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Front side.
Printed as "Open Circuit Voltage 21.5V" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026.
Printed as "Short Circuit Current 12.4A Front Side/9.9A Rear Side" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Front side.
Printed as "Temperature Coefficient of Rated Power −(0.30±0.02)%/°C" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. The printed tolerance is kept in the quote.
Printed as "Folded Dimensions (W×L×H) 615×590×32 mm" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. The manual prints folded dimensions.
Printed as "Rated Power 220W (±5W) Front Side 175W (±5W) Rear Side" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Front side; the rear side is printed as 175W.
The EcoFlow 220W Bifacial Portable Solar Panel (EF-Fold-G220-04)_User Manual prints "Efficiency 25%" in its Specifications table with no cell or module label, and EcoFlow's US store listings for its 25% portable and modular panels print "Up to 25% conversion efficiency" with no label either. The figure is shown as printed; it is not counted as a documented module efficiency.
Printed as "Efficiency 25%" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Printed as "Efficiency" without saying cell or module. EcoFlow's US store listings for its NextGen 160W, NextGen 220W Bifacial, 220W Bifacial and 125W Bifacial Modular panels print "Up to 25% conversion efficiency", also without saying cell or module (read September 29, 2026, not cited). Revised on 29 September 2026: EcoFlow prints "Efficiency 25%" without saying whether it is the cell or the module efficiency, and no EcoFlow document read says either, so the figure is kept as printed with a warning rather than asserted as module efficiency.
Printed as "Optimal Operating Voltage 18.4V" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026.
Printed as "Optimal Operating Current 11.9A Front Side/9.5A Rear Side" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Front side.
Printed as "Open Circuit Voltage 21.5V" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026.
Printed as "Short Circuit Current 12.4A Front Side/9.9A Rear Side" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Front side.
Printed as "Temperature Coefficient of Rated Power −(0.30±0.02)%/°C" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. The printed tolerance is kept in the quote.
Printed as "Folded Dimensions (W×L×H) 615×590×32 mm" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. The manual prints folded dimensions.
Printed as "Bifaciality Coefficients 80%±5%" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026.
Printed as "Unfolded Dimensions (W×L×H) 615×2155×25 mm" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Unfolded; printed as width x length x height.
Printed as "Weight Approx. 7 kg (15.4 lbs)" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026.
Printed as "connect the output cable to the connectors of the solar to XT60i charging cable" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), How to Connect, captured on September 26, 2026.
Printed as "The panel has 6 preset holes with an internal diameter of 8 mm, allowing for mounting the panel with zip ties or hooks." in EcoFlow's FAQs After-sales Policy Downloads Overview 1 Photovoltaic module (Front) Contains a solar angle guide and a junction box. Face this side to (PDF page 2). The manual applies to this model: User Manual V1.0 "EcoFlow 220W Bifacial Portable Solar Panel (EF-Fold-G220-04)".
Printed as "Folded Dimensions (W×L×H) 615×590×32 mm" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Printed as width x length x height.
Published claims and calculations, not independent test results.
Documents
1 on file
PDF
EcoFlow: FAQs After-sales Policy Downloads Overview 1 Photovoltaic module (Front) Contains a solar angle guide and a junction box. Face this side toOfficialEcoFlowOfficial instruction manual
Source details
Revision
Not stated
Revision date
Not stated
Archived copy captured on 2026-10-15.
Location: Installation instructions
Retrieved
EcoFlow's own manual, captured October 15, 2026 with the paced research fetcher (robots.txt read first). Manufacturer instructions, not independent tests.
Archived copies
Archived copy of a document published by EcoFlow. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.
Archived documents
EcoFlow 220W Bifacial Portable Solar Panel (EF-Fold-G220-04)_User Manual
Archived copy of a document published by EcoFlow. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
The Evidence score uses the priorities you choose. It counts published documents, such as certificates and warranty terms, and it compares a documented figure with the best documented figure of the same kind. It does not count owner reviews, and it is not a verdict on product quality or on how many people have reviewed it. A low score can mean little is documented, or that a documented figure is below the best of its kind. Undisclosed data scores 0.
Missing for this product: Module efficiency needed; Product warranty needed; Power warranty needed; First-year degradation needed.
Each input is scored against the best documented value for a solar panel, and weight per watt against the best in the panel’s own format. A documented value always earns points; an undisclosed one earns 0 and is listed as missing. Certificates and unsupported claims do not add points.
Module efficiency25 % · not confirmed0.0 / 26.0
Printed as "Efficiency 25%" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. Printed as "Efficiency" without saying cell or module. EcoFlow's US store listings for its NextGen 160W, NextGen 220W Bifacial, 220W Bifacial and 125W Bifacial Modular panels print "Up to 25% conversion efficiency", also without saying cell or module (read September 29, 2026, not cited). Revised on 29 September 2026: EcoFlow prints "Efficiency 25%" without saying whether it is the cell or the module efficiency, and no EcoFlow document read says either, so the figure is kept as printed with a warning rather than asserted as module efficiency.
A value is on file but is not counted: it carries a warning or is not confirmed.
0.3 against 0.22 %/°C, the lowest documented for a solar panel (printed by the maker): Jackery SolarSaga 100 Air
Printed as "Temperature Coefficient of Rated Power −(0.30±0.02)%/°C" in the EcoFlow 220W Bifacial Portable Solar Panel user manual (Model EF-Fold-G220-04), Specifications, captured on September 26, 2026. The printed tolerance is kept in the quote.
