☀️ LONGi 645W Bifacial Double-Glass Solar Panel with Anti-Dust (DATASHEET)
Brand: LONGi
Model: LR8-66HVDF-645M
Series: Hi-MO X10
Type: Bifacial Double-Glass Monocrystalline Solar Panel with Anti-Dust Frame
Cell Technology: High-Efficiency Monocrystalline Cells
Application: Commercial, Industrial, Utility-Scale & Large Residential Solar Installations
⚡ Key Features
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645W rated output with 23.88% module efficiency for exceptional energy generation.
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Bifacial technology captures reflected sunlight from the rear side for increased energy yield.
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Patented Anti-Dust Frame Design reduces dust accumulation, helping improve energy production by 2% or more.
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Advanced anti-shading technology minimizes hotspot formation and reduces power loss under partial shading.
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Lower operating temperatures improve reliability and reduce hotspot risks by over 60°C compared to conventional modules under shaded conditions.
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Dual-glass construction provides superior durability, moisture resistance, and long-term reliability.
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Excellent mechanical strength with 5400Pa front and 2400Pa rear load ratings.
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High bifaciality factor of 75 ±5% maximizes rear-side energy generation.
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Excellent temperature coefficient of -0.26%/°C ensures stable performance in high-temperature environments.
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Only 1% first-year degradation and 0.35% annual degradation from years 2–30 for long-term performance.
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Backed by a 15-year product warranty and 30-year linear performance warranty.
📐 Technical Specifications
| Specification |
Value |
| Model |
LR8-66HVDF-645M |
| Rated Power (Pmax) |
645 W |
| Module Efficiency |
23.88% |
| Cell Configuration |
132 Cells (6 × 22) |
| Cell Technology |
Monocrystalline |
| Module Type |
Bifacial Double Glass |
| Open Circuit Voltage (Voc) |
49.62 V |
| Short Circuit Current (Isc) |
16.46 A |
| Maximum Power Voltage (Vmp) |
40.88 V |
| Maximum Power Current (Imp) |
15.78 A |
| Power Tolerance |
0 ~ +3% |
| Bifaciality |
75 ±5% |
| Maximum System Voltage |
1500 V DC |
| Maximum Series Fuse Rating |
35 A |
| Operating Temperature |
-40°C to +85°C |
| Module Operating Temperature (T98) |
Max. 70°C |
| NOCT |
45 ±2°C |
| Front Glass |
2.0 mm Semi-Tempered Glass |
| Rear Glass |
2.0 mm Semi-Tempered Glass |
| Junction Box |
IP68, 3 Bypass Diodes |
| Frame |
Anodized Aluminium Alloy with Anti-Dust Design |
| Output Cable |
4 mm², +400 / -200 mm (Customisable) |
| Dimensions |
2382 × 1134 × 30 mm |
| Weight |
32.5 kg |
🏡 Benefits
- Generates additional energy through bifacial rear-side power production.
- Patented anti-dust frame reduces maintenance requirements and improves long-term performance.
- Superior anti-shading performance minimizes energy losses during partial shading.
- Dual-glass construction provides enhanced durability against moisture, corrosion, and environmental stress.
- Excellent temperature performance delivers higher energy production in hot climates.
- Strong mechanical loading makes it suitable for demanding rooftop and ground-mounted installations.
- Ideal for cement roofs, carports, ground-mounted arrays, and other high-reflectivity environments.
🏷️ Certifications
- IEC 61215
- IEC 61730
- IEC 62941
- ISO 9001:2015 Quality Management System
- ISO 14001:2015 Environmental Management System
- ISO 45001:2018 Occupational Health & Safety Management System
🏷️ Quality & Support
The LONGi LR8-66HVDF-645M Hi-MO X10 combines advanced bifacial technology with an innovative anti-dust frame design to maximise energy production while reducing maintenance requirements. Featuring a durable dual-glass construction, outstanding anti-shading performance, and industry-leading efficiency, this module is engineered for long-term reliability in commercial, industrial, utility-scale, and premium residential solar installations. Backed by a 15-year product warranty and 30-year linear performance warranty, it delivers dependable, high-yield renewable energy for decades
