Solar Panel Comparison
JA Solar Deep Blue 4.0 440W N-Type Bifacial vs Suntech Ultra V Pro Mini 445W All Black
The Ultra V Pro Mini 445W All Black delivers 445W, 5W more than the Deep Blue 4.0 440W N-Type Bifacial at 440W.
Both panels share the same 22.5% efficiency rating.
They use different cell technologies: Deep Blue 4.0 440W N-Type Bifacial uses N-type Bycium+ MBB Half-Cell, while Ultra V Pro Mini 445W All Black uses N-type TOPCon.
Here's how they compare across all key specifications.
Spec
JA Solar
Deep Blue 4.0 440W N-Type Bifacial
440W
22.5% efficiency
Suntech
Ultra V Pro Mini 445W All Black
445W
22.5% efficiency
Full Specification Comparison
| Spec | Deep Blue 4.0 440W N-Type Bifacial | Ultra V Pro Mini 445W All Black |
|---|---|---|
| Performance | ||
| Power Output | 440 W | 445 W |
| Efficiency | 22.5% | 22.5% |
| Cell Type | N-type Bycium+ MBB Half-Cell | N-type TOPCon |
| Temp. Coeff. | -0.29 %/°C | — |
| Number of Cells | 108 | 108 |
| Bifacial | Yes | No |
| Electrical | ||
| Voc | 39.38 V | 39.11 V |
| Vmp | 33.37 V | 32.87 V |
| Isc | 13.85 A | 14.49 A |
| Imp | 13.18 A | 13.54 A |
| Max System Voltage | 1500 V | 1500 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1722x1134x30 mm | 1722x1134x30 mm |
| Weight | 21.5 kg | 21 kg |
| Frame Colour | Black | Black |
| Connector Type | MC4-EVO2 | MC4 |
| Junction Box IP | IP68 | IP68 |
| Warranty & Certification | ||
| Product Warranty | 12 years | 25 years |
| Power Warranty | 30 years linear | 30 years linear |
| MCS Certified | Yes | Yes |
| Certifications | IEC 61215, IEC 61730 | IEC 61215, IEC 61730 |
| Pricing (UK) | ||
| Retail Price | £53.41 | — |
| Price per Watt | £0.121/W | — |
Frequently Asked Questions
Which is more efficient, the Deep Blue 4.0 440W N-Type Bifacial or the Ultra V Pro Mini 445W All Black?
Both the Deep Blue 4.0 440W N-Type Bifacial and Ultra V Pro Mini 445W All Black have the same efficiency rating of 22.5%.
Which panel produces more power, the Deep Blue 4.0 440W N-Type Bifacial 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 Deep Blue 4.0 440W N-Type Bifacial.
Which solar panel should I choose for my home — the Deep Blue 4.0 440W N-Type Bifacial 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.
JA Solar
Deep Blue 4.0 440W N-Type Bifacial
440W · 22.5% efficiency · N-type Bycium+ MBB Half-Cell
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.