Solar Panel Comparison
SunPower/Maxeon Maxeon 3 400W vs Suntech Ultra V Pro Mini 445W All Black
The Ultra V Pro Mini 445W All Black delivers 445W, 45W more than the Maxeon 3 400W at 400W.
Maxeon 3 400W has a higher efficiency of 22.6% versus 22.5% for the Ultra V Pro Mini 445W All Black.
They use different cell technologies: Maxeon 3 400W uses Monocrystalline IBC Gen III, while Ultra V Pro Mini 445W All Black uses N-type TOPCon.
Here's how they compare across all key specifications.
Spec
SunPower/Maxeon
Maxeon 3 400W
400W
22.6% efficiency
Suntech
Ultra V Pro Mini 445W All Black
445W
22.5% efficiency
Full Specification Comparison
| Spec | Maxeon 3 400W | Ultra V Pro Mini 445W All Black |
|---|---|---|
| Performance | ||
| Power Output | 400 W | 445 W |
| Efficiency | 22.6% | 22.5% |
| Cell Type | Monocrystalline IBC Gen III | N-type TOPCon |
| Temp. Coeff. | -0.27 %/°C | — |
| Number of Cells | 104 | 108 |
| Bifacial | No | No |
| Electrical | ||
| Voc | 75.6 V | 39.11 V |
| Vmp | 65.2 V | 32.87 V |
| Isc | 6.65 A | 14.49 A |
| Imp | 6.14 A | 13.54 A |
| Max System Voltage | 1000 V | 1500 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1046x1690x40 mm | 1722x1134x30 mm |
| Weight | 19 kg | 21 kg |
| Frame Colour | Black | Black |
| Connector Type | Staubli MC4 | MC4 |
| Junction Box IP | — | IP68 |
| Warranty & Certification | ||
| Product Warranty | 25 years | 25 years |
| Power Warranty | 25 years (92% at yr 25, 0.25%/yr degradation) | 30 years linear |
| MCS Certified | No | Yes |
| Certifications | IEC 61215, IEC 61730, UL 61730 | IEC 61215, IEC 61730 |
Frequently Asked Questions
Which is more efficient, the Maxeon 3 400W or the Ultra V Pro Mini 445W All Black?
The Maxeon 3 400W is more efficient at 22.6%, compared to 22.5% for the Ultra V Pro Mini 445W All Black. Higher efficiency means more power generated per square metre of roof space.
Which panel produces more power, the Maxeon 3 400W or the Ultra V Pro Mini 445W All Black?
The Ultra V Pro Mini 445W All Black has a higher rated output at 445W. This means fewer panels would be needed to reach the same system size compared to the Maxeon 3 400W.
Which solar panel should I choose for my home — the Maxeon 3 400W or the Ultra V Pro Mini 445W All Black?
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.
SunPower/Maxeon
Maxeon 3 400W
400W · 22.6% efficiency · Monocrystalline IBC Gen III
View full specs →Suntech
Ultra V Pro Mini 445W All Black
445W · 22.5% efficiency · N-type TOPCon
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.