LONGi Solar Panel Datasheet — LR8-66HYD-640W
Hi-MO 9 dual-glass module carrying the full LR8-66HYD-640W code: 640W maximum power and 23.7% module efficiency, 40.58V and 15.61A at the maximum power point, 33.5kg in a 2382×1134×30mm frame.
SKU: LR8-66HYD-640W | Last Updated: 2026-03-25
⚡Electrical Specifications
| Maximum Power (Pmax) | 640W |
| Open Circuit Voltage (Voc) | 49.42V |
| Short Circuit Current (Isc) | 16.30A |
| Maximum Power Voltage (Vmpp) | 40.58V |
| Maximum Power Current (Impp) | 15.61A |
| Module Efficiency | 23.7% |
| Maximum Power (Pmax/W) | 630 480.2 |
| Open Circuit Voltage (Voc/V) | 49.32 46.87 |
| Short Circuit Current (Isc/A) | 16.22 13.03 |
| Testing Condition | STC NOCT |
| Voltage at Maximum Power (Vmp/V) | 40.68 38.66 |
| Current at Maximum Power (Imp/A) | 15.61 12.51 |
🔧Mechanical Specifications
| Dimensions (L×W×H) | 2382×1134×30mm |
| Weight | 33.5kg |
| Frame Material | Weather-resistant anodized aluminum frame |
| Glass Type | Dual glass, weather-resistant semi-tempered glass |
🌡️Environmental Specifications
| Temperature Coefficient of Pmax | -0.260%/°C |
| Temperature Coefficient of Voc | -0.200%/°C |
| Temperature Coefficient of Isc | +0.050%/°C |
| Front Side Maximum Static Loading | 5400Pa |
| Rear Side Maximum Static Loading | 2400Pa |
| Operational Temperature | -40°C to +85°C |
| Maximum System Voltage | DC1500V (IEC/UL) |
| Maximum Series Fuse Rating | 35A |
📏Dimensions
Width1134mm
Height2382mm
Depth30mm
Weight33.5kg
✅Certifications
IEC 61215IEC 61730UL 61730ISO9001:2015ISO14001:2015ISO45001:2018IEC62941