The JJN 425W N-Type 16BB Bifacial Rigid Solar Panel (JJN-SP-425W-N, UL 61730) is the better rigid solar panel overall, rated 4.1 to 3.9. The JJN 425W N-Type 16BB Bifacial Rigid Solar Panel (JJN-SP-425W-N, UL 61730) leads on durability.
A 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 $279.99 JJN $289A low-cost 430 W bifacial panel for a home rooftop, shed or ground-mount array, if you can get the electrical specs from the seller before buying. Buyers who want a datasheet and stated warranty should look at JJN’s or Callsun’s large panels.
Amazon $279.99Prices were last checked October 21, 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 | JJN 425W N-Type 16BB Bifacial Rigid Solar Panel (JJN-SP-425W-N, UL 61730) | STAR 430W N-Type Bifacial Double-Glass Solar Panel (SR-SP-430W-N-1, UL 61730) |
|---|---|---|
| Overall rating | 4.1/5 | 3.9/5 |
| Value 45% | 80 $0.66 per rated watt | 81 $0.65 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 67 IP68, 5-year warranty | 40 IP68 |
| Efficiency 15% | 100 25% claimed efficiency | 100 25% claimed efficiency |
| JJN 425W N-Type 16BB Bifacial Rigid Solar Panel (JJN-SP-425W-N, UL 61730) | STAR 430W N-Type Bifacial Double-Glass Solar Panel (SR-SP-430W-N-1, UL 61730) | |
|---|---|---|
| Output | ||
| Rated power | 425 W | 430 W |
| Efficiency | 25% (published as "25+%"; the maker does not say whether this is cell or module efficiency) | 25% (published as "25% High Efficiency" without saying whether this is cell or module efficiency) |
| Cells | Monocrystalline (N-type, 16BB, 182 mm full cells, Grade A+) | Monocrystalline (N-type, half-cell; the listing calls the cells both 16BB and HJT with SMBB, so the exact technology is unclear) |
| Bifacial | Yes | Yes |
| Electrical | ||
| Open-circuit voltage (Voc) | 38.6 V | - |
| Voltage at max power (Vmp) | 32.1 V | - |
| Short-circuit current (Isc) | 13.8 A | - |
| Current at max power (Imp) | 13.2 A | - |
| Connections | ||
| Output connector | MC4 | - |
| Build | ||
| Weight | 53.6 lb (24.3 kg) | 47 lb (21.3 kg) |
| Dimensions | 67.8 x 44.7 x 1.2 in | 67.8 x 44.7 x 1.2 in |
| Frame | anodized aluminum | aluminum |
| Glass | tempered, dual-glass construction | double-glass encapsulation |
| Junction box rating | IP68 | IP68 |
| Warranty | 5 years | - |
| Output warranty | 30-year performance warranty, 87.4% output | - |
