LONGi LR8-66HVD-665M
Official manufacturer GLOBAL verified Sept. 3, 2026
Identity
| category | pv_modules |
| generation | Hi-MO X10 Scientist |
| manufacturer | LONGi |
| market_version | IEC DC1500V |
| model | LR8-66HVD-665M |
| mpn | UNKNOWN |
| product_family | LR8-66HVD 640~665M (Hi-MO X10 Scientist, 30/30 and 15 frame) |
| product_status | active |
| region | GLOBAL |
| release_year | 2025 |
| series | Hi-MO X10 |
| sku | UNKNOWN |
| variant | bifacial dual glass (BGV01) |
Electrical
| application_class | UNKNOWN |
| bifacial | True |
| bifaciality_factor_pct | 75 |
| cell_technology | BC-cell (back contact) monocrystalline, 132 cells (6x22), bifacial dual glass. The fetched sheet does not spell out 'HPBC 2.0', so that wording is not asserted here. |
| extra | {'power_bins_w': [640, 645, 650, 655, 660, 665], 'power_bin_table': [{'pmax_w': 640, 'model': 'LR8-66HVD-640M', 'voc_v': 49.52, 'vmp_v': 40.78, 'isc_a': 16.38, 'imp_a': 15.69, 'efficiency_pct': 23.69}, {'pmax_w': 645, 'model': 'LR8-66HVD-645M', 'voc_v': 49.62, 'vmp_v': 40.88, 'isc_a': 16.46, 'imp_a': 15.78, 'efficiency_pct': 23.88}, {'pmax_w': 650, 'model': 'LR8-66HVD-650M', 'voc_v': 49.72, 'vmp_v': 40.98, 'isc_a': 16.54, 'imp_a': 15.86, 'efficiency_pct': 24.06}, {'pmax_w': 655, 'model': 'LR8-66HVD-655M', 'voc_v': 49.82, 'vmp_v': 41.08, 'isc_a': 16.62, 'imp_a': 15.94, 'efficiency_pct': 24.25}, {'pmax_w': 660, 'model': 'LR8-66HVD-660M', 'voc_v': 49.92, 'vmp_v': 41.18, 'isc_a': 16.7, 'imp_a': 16.03, 'efficiency_pct': 24.43}, {'pmax_w': 665, 'model': 'LR8-66HVD-665M', 'voc_v': 50.02, 'vmp_v': 41.28, 'isc_a': 16.78, 'imp_a': 16.11, 'efficiency_pct': 24.62}], 'cell_count': '132 (6x22)', 'cell_layout': '132 (6x22)', 'fire_type': 'IEC Class C', 'bifacial_gain_note': 'Bifaciality 75+/-5%; no numeric bifacial-gain table was recovered from the fetched text.'} |
| imp_a | 16.11 |
| isc_a | 16.78 |
| max_reverse_current_a | UNKNOWN |
| max_series_fuse_rating_a | 35 |
| max_system_voltage_label | DC1500V (IEC) |
| max_system_voltage_v | 1500 |
| module_efficiency_pct | 24.62 |
| nmot | {'pmax_w': 'UNKNOWN', 'voc_v': 'UNKNOWN', 'vmp_v': 'UNKNOWN', 'isc_a': 'UNKNOWN', 'imp_a': 'UNKNOWN', 'conditions': 'UNKNOWN', 'note': "No NOCT/NMOT electrical table was recovered from the fetched PDF text; only 'Nominal Operating Cell Temperature 45+/-2 degC' was read. NMOT electrical values from sibling LR8-66HYD sheets were deliberately NOT carried across."} |
| nmot_c | 45 |
| pmax_w | 665 |
| power_tolerance | 0~3% |
| protection_class | Class II |
| rated_power_w | 665 |
| stc_conditions | AM1.5 1000W/m2 25 degC |
| temp_coeff_isc | 0.05 %/degC |
| temp_coeff_pmax | -0.26 %/degC |
| temp_coeff_voc | -0.2 %/degC |
| vmp_v | 41.28 |
| voc_v | 50.02 |
Physical / mechanical
| backsheet | not applicable (dual glass) |
| bypass_diodes | 3 |
| cable_cross_section_mm2 | UNKNOWN |
| cable_length_mm | UNKNOWN |
| connector_type | UNKNOWN - no connector row is printed on this datasheet |
| depth_mm | 30 |
| dimensions_mm | 2382x1134x30 |
| frame | Anodized aluminum alloy frame |
| frame_colour | UNKNOWN |
| glass | Dual glass, 2.0+2.0mm semi-tempered glass |
| glass_construction | dual glass |
| glass_thickness_mm | 2.0 |
| junction_box | IP68, three diodes |
| length_mm | 2382 |
| weight_kg | 33.5 |
| width_mm | 1134 |
Installation
| clamp_requirements | UNKNOWN |
| grounding | UNKNOWN |
| max_installation_altitude_m | UNKNOWN |
| mounting_methods | UNKNOWN |
Environment
| ammonia | UNKNOWN |
| fire_rating | IEC Class C |
| hail | 25mm Hailstone at the speed of 23m/s |
| max_static_load_front_pa | 5400 |
| max_static_load_rear_pa | 2400 |
| operating_temperature_c | -40 to +85 |
| pid | UNKNOWN |
| salt_mist | UNKNOWN |
| snow_load | UNKNOWN |
| wind_load | UNKNOWN |
Certifications
| standards | ['UNKNOWN - certification list was not recovered from the fetched text of this revision'] |
Warranty & service
| annual_degradation_pct | UNKNOWN |
| first_year_degradation_pct | UNKNOWN |
| performance_years | 30 |
| product_years | 15 |
| retained_power_at_year | 30 |
| retained_power_end_pct | UNKNOWN |
Documents
datasheet
LR8-66HVD 640~665M (30/30 and 15 Frame) Scientist - LONGi module datasheet
rev BGV01 20250806
other
{# Located but never retrieved: listed, but deliberately not linked, and it
backs no stored value. #}
LONGi EU product-datasheet page: LR8-66HVD 640~665M - Hi-MO X10 Scientist - 24.62% Efficiency — located, not retrieved
rev UNKNOWN
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| Bifaciality | 75+/-5% |
| Nominal Operating Cell Temperature | 45+/-2 degC |
| Revision | BGV01 20250806 |