LONGi
SKU: LR8-66HGD-620M · Product code: SP2421
In stock (108 units) · 12-year product, 30-year performance
LR8-66HGD-620M is the 620 Wp row in LONGi's LR8-66HGD range. At STC the sheet prints 620 W, efficiency 23.0%, Voc 48.78 V, Isc 16.05 A, Vmp 40.91 V and Imp 15.16 A. NOCT: 471.9 W, Voc 46.36 V, Isc 12.89 A, Vmp 38.88 V, Imp 12.14 A. 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# 288316, 2026-08-12.
Image: LONGi LR8-66HGD-620M 620W HPDC bifacial solar panel. Frame and glass follow the datasheet for this model.
Bifacial dual glass with HPDC cells and bifaciality of 80% ± 5%. The sheet does not use the word TOPCon. Rear-gain examples are referenced to a 610 W front.
Dimensions 2382 × 1134 × 30 mm. Weight 33.5 kg. Cells 132 (6×22), HPDC, half-cut. Front: Dual glass, 2.0 + 2.0 mm heat-strengthened. Rear: 2.0 mm heat-strengthened 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 (576 for USA).
Pmax −0.280%/°C, Voc −0.230%/°C, Isc +0.045%/°C. NOCT 45 ± 2°C. Operating temperature −40°C to +85°C. Power tolerance 0 to 3%. Voc and Isc tolerance: Not printed as a separate Voc/Isc line on this sheet.
Maximum system voltage DC 1500 V (IEC/UL). Series fuse 35 A. Protection Class II. Fire UL type 29, IEC Class C. Size the string from Voc 48.78 V at the coldest morning, Isc 16.05 A, and the inverter's maximum DC voltage. 17 modules are 10.54 kW of nameplate.
12-year product, 30-year performance. First year under 1%, then 0.4% per year for years 2–30. The chart prints 99%, 95.40% at year 10, 91.40% at year 20 and 87.40% at year 30. Issue 20240705 V03. 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 | LR8-66HGD |
| Model | LR8-66HGD-620M |
| STC Pmax | 620 Wp |
| STC efficiency | 23.0% |
| STC Vmp | 40.91 V |
| STC Imp | 15.16 A |
| STC Voc | 48.78 V |
| STC Isc | 16.05 A |
| NMOT electrical | 471.9 W, Voc 46.36 V, Isc 12.89 A, Vmp 38.88 V, Imp 12.14 A |
| Cell type | HPDC, half-cut |
| Cell arrangement | 132 (6×22) |
| Power tolerance | 0 to 3% |
| Voc / Isc tolerance | Not printed as a separate Voc/Isc line on this sheet |
| Power bifaciality | 80 ± 5% |
| Rear-side example | Rear-gain examples are referenced to a 610 W front, so they are not the nameplate of the other bins. |
| Pmax coefficient | −0.280%/°C |
| Voc coefficient | −0.230%/°C |
| Isc coefficient | +0.045%/°C |
| NOCT | 45 ± 2°C |
| Operating temperature | −40°C to +85°C |
| Max. system voltage | DC 1500 V (IEC/UL) |
| Max. series fuse | 35 A |
| Protection class | Class II |
| Front glass | Dual glass, 2.0 + 2.0 mm heat-strengthened |
| Rear | 2.0 mm heat-strengthened 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 | UL type 29, IEC Class C |
| Product warranty | 12 years |
| Performance warranty | 30 years |
| Degradation | First year under 1%, then 0.4% per year for years 2–30. The chart prints 99%, 95.40% at year 10, 91.40% at year 20 and 87.40% at year 30. Issue 20240705 V03. |
| Packaging | 36 per pallet, 144 per 20' GP, 720 per 40' HC (576 for USA) |
| Datasheet certificates | IEC 61215, IEC 61730, UL 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# 288316, 2026-08-12 |
| Datasheet | LONGi Hi-MO 7 LR8-66HGD 595–625M, V3.2 |
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 LR8-66HGD-620M at 620 Wp. Standards: BDS IEC 61215-1:2022, BDS IEC 61215-2:2022, BDS IEC 61730-1:2024, BDS IEC 61730-2:2024. BSTI Ref# 288316, 2026-08-12.
23.0%. This is the efficiency cell on the same row as this wattage.
Bifacial dual glass with HPDC cells and bifaciality of 80% ± 5%. The sheet does not use the word TOPCon. Rear-gain examples are referenced to a 610 W front.
12-year product, 30-year performance. First year under 1%, then 0.4% per year for years 2–30. The chart prints 99%, 95.40% at year 10, 91.40% at year 20 and 87.40% at year 30. Issue 20240705 V03. 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 48.78 V, Isc 16.05 A, Vmp 40.91 V, Imp 15.16 A. Vmp times Imp is 620.20, which matches the 620 W row.
471.9 W, Voc 46.36 V, Isc 12.89 A, Vmp 38.88 V, Imp 12.14 A
2382 × 1134 × 30 mm, 33.5 kg. Cells: 132 (6×22). Glass: Dual glass, 2.0 + 2.0 mm heat-strengthened.
DC 1500 V (IEC/UL). Series fuse 35 A. Confirm both on the label before the string is built.
Pmax coefficient −0.280%/°C. Voc −0.230%/°C. Isc +0.045%/°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.
17 modules are 10.54 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 ৳12,400 and the regular price is ৳17,360. 108 in stock.
LONGi Hi-MO 7 LR8-66HGD 595–625M, V3.2. Only the 620 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 LR8-66HGD-620M. Take BSTI Ref# 288316, 2026-08-12 and the datasheet to the installer.
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৳ 12,400
In stock (108 units)
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