LONGi Solar Hi-MO X10 Scientist LR8-66HVD 645W

Solar PanelsModel LR8-66HVD-645W-SCIENTIST

LONGi Hi-MO X10 Scientist LR8-66HVD 645W

Discover the LONGi Hi-MO X10 Scientist LR8-66HVD 645W solar panel with 645W power output and high efficiency for optimal performance.

  • Maximum Power (Pmax): 645W
  • Open Circuit Voltage (Voc): 49.62V

Choose the Maximum Power (Pmax)

What sets the LR8-66HVD-645W-SCIENTIST apart from the other 5 models in the family: Maximum Power (Pmax) 645W; Open Circuit Voltage (Voc) 49.62V; Short Circuit Current (Isc) 16.66A; Voltage at Maximum Power (Vmpp) 40.88V; Current at Maximum Power (Impp) 15.78A; Module Efficiency 23.88%.

AED 359incl. VAT

In stock

  • Delivered within 3 business days, door to door, to every market we serve.
  • Dispatched the same business day for an order placed before 21:00 (Dubai time), or the next business day after.
  • Delivery charge: AED 170
  • 12-year warranty
Full SpecificationsDownload datasheet (PDF)

LONGi Hi-MO X10 Scientist LR8-66HVD 645W features

  • N-TaiRay + HPBC 2.0 +

    N-TaiRay + HPBC 2.0 + 0BB

  • Power Leads by 30W+, A+

    Power Leads by 30W+, A+ Anti-Shading

  • No Frontal Gridlines, Scenario Integration

  • Prevent Localized Overheating, Less Micro-Crack

About the LONGi Hi-MO X10 Scientist LR8-66HVD 645W

The LONGi Hi-MO X10 Scientist LR8-66HVD 645W is a Hi-MO X10 Scientist solar panel engineered for residential rooftop installations, delivering a maximum power output of 645W at 23.88% module efficiency. Under standard test conditions it produces an open-circuit voltage (Voc) of 49.62V, a short-circuit current (Isc) of 16.66A, a voltage at maximum power (Vmp) of 40.88V and a current at maximum power (Imp) of 15.78A. The panel measures 2382×1134×30mm and weighs 33.5kg, with an Anodized aluminum alloy frame and Dual glass, 2.0+2.0mm semi-tempered glass. It operates across -40°C to +85°C, with a nominal operating cell temperature of 45±2°C, a maximum system voltage of DC1500V (IEC) and a maximum series fuse rating of 35A. It withstands a front-side static load of 5400Pa and a rear-side static load of 2400Pa, with a Pmax temperature coefficient of -0.260%/°C, a Voc coefficient of -0.200%/°C and an Isc coefficient of +0.050%/°C. The Hi-MO X10 Scientist LR8-66HVD 645W is certified by IEC 61215, IEC 61730, ISO9001:2015, ISO14001:2015, ISO45001:2018 and IEC62941 and is backed by a 12-year product warranty and a 30-year performance warranty from LONGi Solar.

Specifications last updated 25 March 2026

LONGi Hi-MO X10 Scientist LR8-66HVD 645W full specifications

Electrical(6)

Maximum Power (Pmax)645W
Open Circuit Voltage (Voc)49.62V
Short Circuit Current (Isc)16.66A
Voltage at Maximum Power (Vmpp)40.88V
Current at Maximum Power (Impp)15.78A
Module Efficiency23.88%

Mechanical(4)

Dimensions (L×W×H)2382×1134×30mm
Weight33.5kg
Frame MaterialAnodized aluminum alloy frame
GlassDual glass, 2.0+2.0mm semi-tempered glass

Environmental(10)

Temperature Coefficient of Isc+0.050%/°C
Temperature Coefficient of Voc-0.200%/°C
Temperature Coefficient of Pmax-0.260%/°C
Front Side Maximum Static Loading5400Pa
Rear Side Maximum Static Loading2400Pa
Operational Temperature-40°C to +85°C
Power Output Tolerance0~3%
Maximum System VoltageDC1500V (IEC)
Maximum Series Fuse Rating35A
Nominal Operating Cell Temperature45±2°C

Certifications(6)

  • IEC 61215
  • IEC 61730
  • ISO9001:2015
  • ISO14001:2015
  • ISO45001:2018
  • IEC62941

Downloads & support

PDFThe manufacturer's sheet, to print or share

Frequently Asked Questions

What is the maximum power output and efficiency of the LONGi Hi-MO X10 Scientist LR8-66HVD 645W?

The LONGi Hi-MO X10 Scientist LR8-66HVD 645W has a maximum power output of 645W and a module efficiency of 23.88%.

What are the electrical specifications (Voc, Isc, Vmp, Imp) of the Hi-MO X10 Scientist LR8-66HVD 645W?

The Hi-MO X10 Scientist LR8-66HVD 645W has an open-circuit voltage (Voc) of 49.62V, a short-circuit current (Isc) of 16.66A, a voltage at maximum power (Vmp) of 40.88V and a current at maximum power (Imp) of 15.78A.

What are the physical dimensions and weight of the Hi-MO X10 Scientist LR8-66HVD 645W?

The Hi-MO X10 Scientist LR8-66HVD 645W measures 2382×1134×30mm and weighs 33.5kg.

What static loading can the Hi-MO X10 Scientist LR8-66HVD 645W withstand?

The Hi-MO X10 Scientist LR8-66HVD 645W withstands a front-side maximum static load of 5400Pa and a rear-side maximum static load of 2400Pa.

How does the Hi-MO X10 Scientist LR8-66HVD 645W perform across temperature changes?

The Hi-MO X10 Scientist LR8-66HVD 645W has a Pmax temperature coefficient of -0.260%/°C, a Voc coefficient of -0.200%/°C and an Isc coefficient of +0.050%/°C.

What is the maximum system voltage and fuse rating of the Hi-MO X10 Scientist LR8-66HVD 645W?

The Hi-MO X10 Scientist LR8-66HVD 645W has a maximum system voltage of DC1500V (IEC) and a maximum series fuse rating of 35A.

What certifications does the Hi-MO X10 Scientist LR8-66HVD 645W have?

The Hi-MO X10 Scientist LR8-66HVD 645W is certified by IEC 61215, IEC 61730, ISO9001:2015, ISO14001:2015, ISO45001:2018 and IEC62941, meeting recognised international standards for safety and performance.

What warranty coverage is available for the Hi-MO X10 Scientist LR8-66HVD 645W?

The Hi-MO X10 Scientist LR8-66HVD 645W is backed by a 12-year product warranty and a 30-year performance warranty from LONGi Solar.

What frame and glass does the Hi-MO X10 Scientist LR8-66HVD 645W use?

The Hi-MO X10 Scientist LR8-66HVD 645W uses an Anodized aluminum alloy frame and Dual glass, 2.0+2.0mm semi-tempered glass.

What is the operating temperature range of the Hi-MO X10 Scientist LR8-66HVD 645W?

The Hi-MO X10 Scientist LR8-66HVD 645W operates across -40°C to +85°C, with a nominal operating cell temperature of 45±2°C.

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