LONGi
SKU: LR8-66HVD-645M · Product code: SP2423
In stock (105 units) · 15-year product, 30-year performance
LR8-66HVD-645M is the 645 Wp row in LONGi's Hi-MO X10 Scientist LR8-66HVD range. At STC the sheet prints 645 W, efficiency 23.88%, Voc 49.62 V, Isc 16.46 A, Vmp 40.88 V and Imp 15.78 A. NOCT: Not printed. This sheet gives STC only.. Bangladesh buyers can check the SREDA module search for this exact model. The listing names BDS IEC 61215-1:2022, BDS IEC 61215-2:2022, BDS IEC 61730-1:2024, BDS IEC 61730-2:2024, BSTI Ref# 738357, 2026-09-24.
Image: LONGi LR8-66HVD-645M 645W HPBC 2.0 bifacial solar panel. Frame and glass follow the datasheet for this model.
Hi-MO X10 Scientist. The sheet says N-TaiRay, HPBC 2.0 and 0BB. It is bifacial dual glass with bifaciality 75% ± 5%. Rear-gain examples use 645 W as the baseline. The sheet prints STC only.
Dimensions 2382 × 1134 × 30 mm. Weight 33.5 kg. Cells 132 (6×22), N-TaiRay, HPBC 2.0, 0BB. Front: Dual glass, 2.0 + 2.0 mm semi-tempered. Rear: 2.0 mm semi-tempered glass. Frame: Anodized aluminium alloy. Junction box: IP68, three diodes. Cable: 4 mm², +400 / −200 mm or ±1400 mm. Connector: Not named on this sheet. Load: 5400 Pa front, 2400 Pa rear, 25 mm hail at 23 m/s. Packaging: 36 per pallet, 144 per 20' GP, 720 per 40' HC.
Pmax −0.260%/°C, Voc −0.200%/°C, Isc +0.050%/°C. NOCT 45 ± 2°C. Operating temperature −40°C to +85°C. Power tolerance 0 to 3%. Voc and Isc tolerance: Not printed on this sheet.
Maximum system voltage DC 1500 V (IEC). Series fuse 35 A. Protection Class II. Fire IEC Class C. Size the string from Voc 49.62 V at the coldest morning, Isc 16.46 A, and the inverter's maximum DC voltage. 16 modules are 10.32 kW of nameplate.
15-year product, 30-year performance. First year under 1%, then 0.35% per year for years 2–30. The chart prints 99%, 95.85% at year 10, 92.35% at year 20 and 88.85% at year 30. Issue BGV01 20250806. No NOCT electrical row is printed. LONGi's warranty terms stay with LONGi. After you buy 15 or more of these modules from SOLAR24, SOLAR24 helps with warranty registration and claim paperwork. 100% original and official products from us, backed by a guarantee.
| Brand | LONGi |
|---|---|
| Manufacturer | LONGi Green Energy Technology Co., Ltd. |
| Series | Hi-MO X10 Scientist LR8-66HVD |
| Model | LR8-66HVD-645M |
| STC Pmax | 645 Wp |
| STC efficiency | 23.88% |
| STC Vmp | 40.88 V |
| STC Imp | 15.78 A |
| STC Voc | 49.62 V |
| STC Isc | 16.46 A |
| NMOT electrical | Not printed. This sheet gives STC only. |
| Cell type | N-TaiRay, HPBC 2.0, 0BB |
| Cell arrangement | 132 (6×22) |
| Power tolerance | 0 to 3% |
| Voc / Isc tolerance | Not printed on this sheet |
| Power bifaciality | 75 ± 5% |
| Rear-side example | Rear-gain examples on this sheet take 645 W as the baseline. At 10% the sheet prints 710 W. That is an example, not a second nameplate. |
| Pmax coefficient | −0.260%/°C |
| Voc coefficient | −0.200%/°C |
| Isc coefficient | +0.050%/°C |
| NOCT | 45 ± 2°C |
| Operating temperature | −40°C to +85°C |
| Max. system voltage | DC 1500 V (IEC) |
| Max. series fuse | 35 A |
| Protection class | Class II |
| Front glass | Dual glass, 2.0 + 2.0 mm semi-tempered |
| Rear | 2.0 mm semi-tempered glass |
| Frame | Anodized aluminium alloy |
| Junction box | IP68, three diodes |
| Cable | 4 mm², +400 / −200 mm or ±1400 mm |
| Connector | Not named on this sheet |
| Dimensions | 2382 × 1134 × 30 mm |
| Weight | 33.5 kg |
| Mechanical load | 5400 Pa front, 2400 Pa rear, 25 mm hail at 23 m/s |
| Fire performance | IEC Class C |
| Product warranty | 15 years |
| Performance warranty | 30 years |
| Degradation | First year under 1%, then 0.35% per year for years 2–30. The chart prints 99%, 95.85% at year 10, 92.35% at year 20 and 88.85% at year 30. Issue BGV01 20250806. No NOCT electrical row is printed. |
| Packaging | 36 per pallet, 144 per 20' GP, 720 per 40' HC |
| Datasheet certificates | IEC 61215, IEC 61730, ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, IEC 62941 |
| SREDA standards | BDS IEC 61215-1:2022, BDS IEC 61215-2:2022, BDS IEC 61730-1:2024, BDS IEC 61730-2:2024 |
| BSTI reference | BSTI Ref# 738357, 2026-09-24 |
| Datasheet | LONGi LR8-66HVD 640–665M Scientist, BGV01 20250806 |
Two LONGi suffixes at the same wattage are not the same design. HPH, HGD, HTH, HTHF, HVD, HVHF and HYD are taken from different sheets.
| Model | Series | Wattage | Efficiency | Price |
|---|---|---|---|---|
| LR4-72HPH-450M | Hi-MO 4m LR4-72HPH | 450 Wp | 20.7% | Ask SOLAR24 |
| LR4-72HPH-455M | Hi-MO 4m LR4-72HPH | 455 Wp | 20.9% | Ask SOLAR24 |
| LR6-72HPH-375M | Hi-MO 3m LR6-72HPH | 375 Wp | 18.8% | Ask SOLAR24 |
| LR5-72HPH-540M | Hi-MO 5m LR5-72HPH G2 | 540 Wp | 20.9% | Ask SOLAR24 |
| LR5-72HPH-545M | Hi-MO 5m LR5-72HPH G2 | 545 Wp | 21.1% | Ask SOLAR24 |
| LR5-72HPH-550M | Hi-MO 5m LR5-72HPH G2 | 550 Wp | 21.3% | Ask SOLAR24 |
| LR5-72HPH-555M | Hi-MO 5m LR5-72HPH G2 | 555 Wp | 21.5% | Ask SOLAR24 |
| LR5-72HGD-575M | LR5-72HGD | 575 Wp | 22.3% | Ask SOLAR24 |
| LR5-72HGD-580M | LR5-72HGD | 580 Wp | 22.5% | Ask SOLAR24 |
| LR5-72HGD-590M | LR5-72HGD | 590 Wp | 22.8% | Ask SOLAR24 |
| LR5-72HTH-575M | LR5-72HTH Explorer | 575 Wp | 22.3% | Ask SOLAR24 |
| LR5-72HTH-580M | LR5-72HTH Explorer | 580 Wp | 22.5% | Ask SOLAR24 |
| LR5-72HTH-585M | LR5-72HTH Explorer | 585 Wp | 22.6% | Ask SOLAR24 |
| LR5-72HTH-590M | LR5-72HTH 590–600M | 590 Wp | 22.8% | Ask SOLAR24 |
| LR5-72HTHF-585M | LR5-72HTHF anti-dust | 585 Wp | 22.6% | Ask SOLAR24 |
| LR7-72HGD-590M | Hi-MO 7 LR7-72HGD | 590 Wp | 21.8% | Ask SOLAR24 |
| LR7-72HGD-610M | Hi-MO 7 LR7-72HGD | 610 Wp | 22.6% | Ask SOLAR24 |
| LR7-72HGD-620M | Hi-MO 7 LR7-72HGD | 620 Wp | 23.0% | Ask SOLAR24 |
| LR8-66HGD-610M | LR8-66HGD | 610 Wp | 22.6% | Ask SOLAR24 |
| LR8-66HGD-615M | LR8-66HGD | 615 Wp | 22.8% | Ask SOLAR24 |
| LR8-66HGD-620M | LR8-66HGD | 620 Wp | 23.0% | Ask SOLAR24 |
| LR8-66HGD-625M | LR8-66HGD | 625 Wp | 23.1% | Ask SOLAR24 |
| LR8-66HVD-645M | Hi-MO X10 Scientist LR8-66HVD | 645 Wp | 23.88% | Ask SOLAR24 |
| LR8-66HVD-650M | Hi-MO X10 Scientist LR8-66HVD | 650 Wp | 24.06% | Ask SOLAR24 |
| LR7-72HVHF-650M | Hi-MO X10 Guardian LR7-72HVHF | 650 Wp | 24.1% | Ask SOLAR24 |
| LR8-66HYD-650M | Hi-MO 9 LR8-66HYD | 650 Wp | 24.1% | Ask SOLAR24 |
Wp is the STC nameplate: 1000 W/m², 25°C cell temperature and AM1.5. A hot roof produces less than that nameplate.
Yes. The SOLAR24 SREDA file lists LR8-66HVD-645M at 645 Wp. Standards: BDS IEC 61215-1:2022, BDS IEC 61215-2:2022, BDS IEC 61730-1:2024, BDS IEC 61730-2:2024. BSTI Ref# 738357, 2026-09-24.
23.88%. This is the efficiency cell on the same row as this wattage.
Hi-MO X10 Scientist. The sheet says N-TaiRay, HPBC 2.0 and 0BB. It is bifacial dual glass with bifaciality 75% ± 5%. Rear-gain examples use 645 W as the baseline. The sheet prints STC only.
15-year product, 30-year performance. First year under 1%, then 0.35% per year for years 2–30. The chart prints 99%, 95.85% at year 10, 92.35% at year 20 and 88.85% at year 30. Issue BGV01 20250806. No NOCT electrical row is printed. LONGi's warranty terms stay with LONGi. After you buy 15 or more of these modules from SOLAR24, SOLAR24 helps with warranty registration and claim paperwork. 100% original and official products from us, backed by a guarantee.
Voc 49.62 V, Isc 16.46 A, Vmp 40.88 V, Imp 15.78 A. Vmp times Imp is 645.09, which matches the 645 W row.
Not printed. This sheet gives STC only.
2382 × 1134 × 30 mm, 33.5 kg. Cells: 132 (6×22). Glass: Dual glass, 2.0 + 2.0 mm semi-tempered.
DC 1500 V (IEC). Series fuse 35 A. Confirm both on the label before the string is built.
Pmax coefficient −0.260%/°C. Voc −0.200%/°C. Isc +0.050%/°C. Operating range −40°C to +85°C.
Yes, if the charge controller or hybrid inverter accepts this Voc, Isc and the fuse rating. The module itself does not include a battery.
16 modules are 10.32 kW of nameplate. Design the array with temperature and inverter limits, not with nameplate alone.
Use the same model in one string. A different LONGi suffix can be a different technology, voltage and current.
The sale price is ৳12,900 and the regular price is ৳18,060. 105 in stock.
LONGi LR8-66HVD 640–665M Scientist, BGV01 20250806. Only the 645 W columns were copied. Neighbouring wattages were not used for Vmp or Imp.
LONGi's warranty terms stay with LONGi. After you buy 15 or more of these modules from SOLAR24, SOLAR24 helps with warranty registration and claim paperwork. 100% original and official products from us, backed by a guarantee.
5400 Pa front, 2400 Pa rear, 25 mm hail at 23 m/s
Open the SREDA module search for LR8-66HVD-645M. Take BSTI Ref# 738357, 2026-09-24 and the datasheet to the installer.
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৳ 12,900
In stock (105 units)
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