The Qcells Q.TRON BLK M-G2+ 430 is the better rigid solar panel overall, rated 4.5 to 4.0. The Qcells Q.TRON BLK M-G2+ 430 leads on durability and value. The Qcells Q.TRON BLK M-G2+ 430 costs $34.70 less ($245.29 vs $279.99).
A safe all-black pick for a home rooftop array where a long warranty from a large, US-assembling maker matters more than the lowest price per watt.
Solar Cellz USA $245.29 A1 Solar Store $245.96A low-cost large-format panel for a home rooftop, shed or ground-mount array on a 24 V or 48 V system with an MPPT controller. Too big and too high-voltage for most RV and van setups.
Amazon $279.99Prices were last checked October 26, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every 150 W and up rigid solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Qcells Q.TRON BLK M-G2+ 430 | JJN 425W Bifacial (JJN-SP-425W-N) |
|---|---|---|
| Overall rating | 4.5/5 | 4.0/5 |
| Value 45% | 89 $0.57 per rated watt | 80 $0.66 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 100 IP68, 25-year warranty | 67 IP68, 5-year warranty |
| Efficiency 15% | 80 22% module efficiency | 74 21.7% module efficiency (from size and rated power) |
| Qcells Q.TRON BLK M-G2+ 430 | JJN 425W Bifacial (JJN-SP-425W-N) | |
|---|---|---|
| Output | ||
| Rated power | 430 W | 425 W |
| Module efficiency | 22% | 21.7% (rated power over panel area) |
| Claimed efficiency | 22.5% (maximum module efficiency of the series (440 W version); the 430 W version is at least 22.0%) | 25% (published as "25+%"; the maker does not say whether this is cell or module efficiency) |
| Cells | Monocrystalline (N-type TOPCon (Q.ANTUM NEO), 108 half cells) | Monocrystalline (N-type, 16BB, 182 mm full cells, Grade A+) |
| Bifacial | No | Yes |
| Electrical | ||
| Open-circuit voltage (Voc) | 39.3 V | 38.6 V |
| Voltage at max power (Vmp) | 32.9 V | 32.1 V |
| Short-circuit current (Isc) | 13.7 A | 13.8 A |
| Current at max power (Imp) | 13.1 A | 13.2 A |
| Voc temperature coefficient | -0.2%/°C | - |
| Series / parallel | Yes | - |
| Connections | ||
| Output connector | Stäubli MC4 (IP68) | MC4 |
| Build | ||
| Weight | 46.7 lb (21.2 kg) | 53.6 lb (24.3 kg) |
| Dimensions | 67.8 x 44.6 x 1.18 in | 67.8 x 44.7 x 1.2 in |
| Frame | black anodized aluminum | anodized aluminum |
| Glass | 3.2 mm thermally pre-stressed, anti-reflection | tempered, dual-glass construction |
| Junction box rating | IP68 | IP68 |
| Warranty | 25 years | 5 years |
| Output warranty | 25 years: at least 98.5% in year 1, then no more than 0.33% loss a year (95.53% at 10 years, 90.58% at 25 years) | 30-year performance warranty, 87.4% output |
| Released | - | 2026-02 |
