The JJN 425W N-Type 16BB Bifacial Rigid Solar Panel (JJN-SP-425W-N, UL 61730) and the HQST 400W (2 x 200W) N-Type 16BB Compact Rigid Solar Panel 2-Pack are evenly matched, rated 4.1 and 4.1. The JJN 425W N-Type 16BB Bifacial Rigid Solar Panel (JJN-SP-425W-N, UL 61730) leads on durability. The HQST 400W (2 x 200W) N-Type 16BB Compact Rigid Solar Panel 2-Pack costs $50 less ($229.99 vs $279.99).
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 $289Two of HQST’s compact 200 W panels in one box, a low-cost way to put 400 W on a 12 V van, RV or shed system. Check the single-panel price first, since two singles have been cheaper.
Amazon $229.99 HQST $229.99Prices 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) | HQST 400W (2 x 200W) N-Type 16BB Compact Rigid Solar Panel 2-Pack |
|---|---|---|
| Overall rating | 4.1/5 | 4.1/5 |
| Value 45% | 80 $0.66 per rated watt | 88 $0.57 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 | 51 IP65, 5-year warranty |
| Efficiency 15% | 100 25% claimed efficiency | 100 25.4% claimed efficiency |
| JJN 425W N-Type 16BB Bifacial Rigid Solar Panel (JJN-SP-425W-N, UL 61730) | HQST 400W (2 x 200W) N-Type 16BB Compact Rigid Solar Panel 2-Pack | |
|---|---|---|
| Output | ||
| Rated power | 425 W | 400 W |
| Efficiency | 25% (published as "25+%"; the maker does not say whether this is cell or module efficiency) | 25.4% (cell efficiency, "up to" (the datasheet labels it module efficiency)) |
| Cells | Monocrystalline (N-type, 16BB, 182 mm full cells, Grade A+) | Monocrystalline (N-type TOPCon, 16BB) |
| Bifacial | Yes | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 38.6 V | 22.4 V |
| Voltage at max power (Vmp) | 32.1 V | 19 V |
| Short-circuit current (Isc) | 13.8 A | 11 A |
| Current at max power (Imp) | 13.2 A | 10.5 A |
| Voc temperature coefficient | - | -0.3%/°C |
| Series / parallel | - | Yes |
| Connections | ||
| Output connector | MC4 | MC4 |
| Build | ||
| Weight | 53.6 lb (24.3 kg) | - |
| Dimensions | 67.8 x 44.7 x 1.2 in | 46.3 x 30.1 x 1.2 in (each panel) |
| Frame | anodized aluminum | anodized aluminum alloy |
| Glass | tempered, dual-glass construction | 3.2 mm tempered |
| Junction box rating | IP68 | IP65 |
| Warranty | 5 years | 5 years |
| Output warranty | 30-year performance warranty, 87.4% output | 25-year power output warranty; maker claims 87.4% output after 30 years |
