Solar Panels comparison
Aptos 550W Bifacial Solar Panel vs ZNShine 550W Bifacial Solar Panel
Spec-by-spec comparison of the Aptos 550W Bifacial Solar Panel and ZNShine 550W Bifacial Solar Panel, with editorial commentary on which fits which use case.
| Aptos 550W Bifacial Solar Panel Solar Panel | ZNShine 550W Bifacial Solar Panel Solar Panel | |
|---|---|---|
| Price (MSRP) | $214 | $192 |
| Status | Active | Active |
| Wattage (Pmax) | 550 W | 550 W |
| Module efficiency (STC) | 21.29% | 21.68% |
| Cell type | PERC | PERC |
| Bifacial | Yes | Yes |
| Open-circuit voltage (Voc) | 49.8 V | 46.9 V |
| Short-circuit current (Isc) | 13.99 A | 11.22 A |
| Voltage at Pmax (Vmp) | 44.15 V | 38.9 V |
| Current at Pmax (Imp) | 12.45 A | 10.56 A |
| Front glass | Front Glass: 2mm, Rear Glass: 2mm, AR Coating, High Transmission, Low Iron, Semi-Tempered Dual Glass | 2.0mm+2.0mm high transmission AR coated heat strengthened glass |
| Frame | Anodized Aluminum Alloy | - |
| Output cable | 4 mm² | 4 mm² |
| Cable length | 1200 mm | 350 mm |
| Connector type | MC4-EVO2 | MC4 |
| Dimensions | 2278 × 1134 × 35 mm | 2278 × 1134 × 30 mm |
| Weight | 32.29 kg | 31.5 kg |
| Temp. coefficient (Pmax) | -0.335 %/°C | - |
| Temp. coefficient (Voc) | -0.277 %/°C | - |
| Temp. coefficient (Isc) | 0.036 %/°C | - |
| Mechanical load | 5400 Pa front / 4000 Pa back | - |
| Product warranty | 30 years | 12 years |
| Performance warranty | 30 years | 30 years |
| Bifacial gain | - | +25% |
| Buy | signature solar → | signature solar → |
Where each one wins
Aptos DNA-144-BF10-550W-DG wins on product warranty (30 years vs 12 years), price ($214.5 vs $192.5). Product (workmanship) warranty is what covers the panel itself against defects. Most panels offer 25-year *performance* warranties; only a subset offer 25-year *product* warranties.
ZNShine ZXM7-SHLDD144 Series wins on efficiency (21.29% vs 21.68%). Module efficiency is what determines watts-per-square-meter. The higher number wins on tight roofs; below ~21.5% you start needing extra panels to hit the same system size.
The right pick depends on which dimensions matter most to you. The spec table above lays out the full envelope; the chat panel below answers "which one for {use case}" if you want a directed recommendation.
Aptos
550W Bifacial Solar Panel
$214
Best for
- ✓ ground-mount or albedo-friendly install with bifacial gain
- ✓ long-hold projects (25+ year product warranty)
ZNShine
550W Bifacial Solar Panel
$192
Best for
- ✓ tight roof spaces wanting maximum watts/m²
- ✓ ground-mount or albedo-friendly install with bifacial gain
Watch out for
- ! Product warranty is only 12 years — shorter than premium tier-1 panels
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Catalog-grounded answers. Suggest alternatives, sanity-check fit, dig into specs.
Ask anything about solar gear, comparisons, recommendations, edge cases. I'll cite specs from our catalog and link to product details.