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Solar Panels
Hi-Mo X10 LR8-66HVD 640-665M
The LONGi LR8-66HVD series is a high-performance bifacial dual-glass solar module (640W–665W) engineered for West Africa's demanding conditions, including extreme heat, high irradiance, and dusty environments across the Sahel and ECOWAS regions. Built with advanced BC cell technology achieving 24.6% peak efficiency, these panels excel in off-grid solar installations, rural electrification projects, and remote microgrids where energy independence and sand-dust resistance are critical. The dual-glass design and exceptional reliability ensure sustained performance in harsh West African climates, backed by a comprehensive 30-year warranty for long-term energy access in challenging locations.
Key Features
- ✓Peak module efficiency up to 24.6% under STC conditions
- ✓TaiRay wafer & BC cell technology for enhanced reliability and lower operating temperature
- ✓Bifacial dual-glass design with up to 88.85% bifaciality for increased energy yield
- ✓Power output range of 640W–665W, suitable for utility-scale and commercial rooftop installations
- ✓Anodized aluminum alloy frame with IP68-rated junction box and three diodes
- ✓Certified to IEC 61215, IEC 61730, and UL 61730 standards
- ✓30-year linear power output warranty and 15-year materials and workmanship warranty
- ✓Suitable for high-temperature scenarios and industrial/commercial corrugated steel roofs
Technical Specifications
| NOCT | 49 ± 3°C |
| Brand | LONGi |
| Frame | Anodized aluminum alloy frame |
| Weight | Listed in datasheet (kg) |
| Warranty | 15-year materials and workmanship warranty; 30-year linear power output warranty |
| Connector | MC4 compatible |
| Back Glass | Dual glass |
| Efficiency | Up to 24.6% (STC) |
| Application | Utility, Industrial, Commercial |
| Bifaciality | Up to 88.85% |
| Front Glass | Dual glass, heat-strengthened |
| J-Box Rating | IP68, three diodes |
| Panel Format | Bifacial Dual Glass |
| Certifications | IEC 61215, IEC 61730, UL 61730, ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, IEC 62941 |
| Cell Technology | BC (Back Contact) with TaiRay Wafer |
| Module Dimensions | Length customizable; Width tolerance ±2mm |
| Operating Temperature | -40°C ~ +85°C |
| Max Series Fuse Rating | 30A |
| Maximum System Voltage | 1500V DC (IEC/UL) |
| Modules per 40' Container | 36 pcs per pallet; qty per 40' HC container as per packaging spec |
| Peak Power Watts-PMAX(Wp) | 640 / 645 / 650 / 655 / 660 / 665 |
| Open Circuit Voltage-VOC (V) | 49.52 / 49.62 / 49.72 / 49.82 / 49.92 / 50.02 (STC) |
| Short Circuit Current-ISC (A) | 16.38 / 16.46 / 16.54 / 16.62 / 16.70 / 16.78 (STC) |
| Maximum Power Current-IMPP (A) | 15.69 / 15.78 / 15.86 / 15.94 / 16.03 / 16.11 (STC) |
| Maximum Power Voltage-VMPP (V) | 40.78 / 40.88 / 40.98 / 41.08 / 41.18 / 41.28 (STC) |
| Temperature Coefficient of ISC | +0.04%/°C |
| Temperature Coefficient of VOC | -0.24%/°C |
| Temperature Coefficient of PMAX | -0.30%/°C |