Solar Panel Comparison
EcoFlow 400W Rigid Solar Panel All Black vs SunPower/Maxeon Maxeon 3 400W
Both panels are rated at 400W.
400W Rigid Solar Panel All Black has a higher efficiency of 23% versus 22.6% for the Maxeon 3 400W.
They use different cell technologies: 400W Rigid Solar Panel All Black uses Mono PERC, while Maxeon 3 400W uses Monocrystalline IBC Gen III.
Here's how they compare across all key specifications.
Spec
EcoFlow
400W Rigid Solar Panel All Black
400W
23% efficiency
SunPower/Maxeon
Maxeon 3 400W
400W
22.6% efficiency
Full Specification Comparison
| Spec | 400W Rigid Solar Panel All Black | Maxeon 3 400W |
|---|---|---|
| Performance | ||
| Power Output | 400 W | 400 W |
| Efficiency | 23% | 22.6% |
| Cell Type | Mono PERC | Monocrystalline IBC Gen III |
| Temp. Coeff. | -0.3 %/°C | -0.27 %/°C |
| Number of Cells | — | 104 |
| Bifacial | No | No |
| Electrical | ||
| Voc | 37.1 V | 75.6 V |
| Vmp | — | 65.2 V |
| Isc | 13.79 A | 6.65 A |
| Imp | — | 6.14 A |
| Max System Voltage | 1000 V | 1000 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1722x1134x35 mm | 1046x1690x40 mm |
| Weight | 21.8 kg | 19 kg |
| Frame Colour | Black | Black |
| Connector Type | EcoFlow Solar Connector | Staubli MC4 |
| Junction Box IP | IP68 | — |
| Warranty & Certification | ||
| Product Warranty | 10 | 25 years |
| Power Warranty | No output warranty stated | 25 years (92% at yr 25, 0.25%/yr degradation) |
| MCS Certified | No | No |
| Certifications | IEC 60529 IP68 | IEC 61215, IEC 61730, UL 61730 |
| Pricing (UK) | ||
| Retail Price | £149.50 | — |
| Price per Watt | £0.374/W | — |
Frequently Asked Questions
Which is more efficient, the 400W Rigid Solar Panel All Black or the Maxeon 3 400W?
The 400W Rigid Solar Panel All Black is more efficient at 23%, compared to 22.6% for the Maxeon 3 400W. Higher efficiency means more power generated per square metre of roof space.
Which panel produces more power, the 400W Rigid Solar Panel All Black or the Maxeon 3 400W?
Both panels are rated at the same output of 400W.
Which solar panel should I choose for my home — the 400W Rigid Solar Panel All Black or the Maxeon 3 400W?
The right choice depends on your priorities. If maximising energy generation per panel is key, consider efficiency and wattage. If budget is your main concern, compare price per watt. Both panels have their merits — use our Solar Estimator to see how each would perform in your specific home setup.
EcoFlow
400W Rigid Solar Panel All Black
400W · 23% efficiency · Mono PERC
View full specs →SunPower/Maxeon
Maxeon 3 400W
400W · 22.6% efficiency · Monocrystalline IBC Gen III
View full specs →More Comparisons
See how these panels perform in your home
Use our Solar Estimator to calculate system size, installation cost, and payback period — with either of these panels as a starting point.