LONGi Solar Hi-MO 9 LR8-66HYD 640W

Solar PanelsModel LR8-66HYD-640W

LONGi Hi-MO 9 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.

  • Maximum Power (Pmax): 640W
  • Open Circuit Voltage (Voc): 49.42V

Choose the Maximum Power (Pmax)

What sets the LR8-66HYD-640W apart from the other 8 models in the family: 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%.

AED 338incl. 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 9 LR8-66HYD 640W features

  • 640W at 23.7% module efficiency

    The LR8-66HYD-640W is rated 640W maximum power with 23.7% module efficiency under STC NOCT test conditions.

  • 49.42V Voc and 16.30A Isc

    Open-circuit voltage of 49.42V and short-circuit current of 16.30A set the string limits published for the LR8-66HYD-640W.

  • 40.58V and 15.61A at maximum power

    The maximum power point of the LR8-66HYD-640W sits at 40.58V and 15.61A, the operating pair quoted on this listing.

  • 2382×1134×30mm and 33.5kg

    The LR8-66HYD-640W is a 2382×1134×30mm module weighing 33.5kg, built as dual glass, weather-resistant semi-tempered glass in a weather-resistant anodized aluminum frame.

  • 5400Pa front and 2400Pa rear loading

    The LR8-66HYD-640W is rated to 5400Pa front and 2400Pa rear static load, with a -0.260%/°C Pmax temperature coefficient across a -40°C to +85°C operating range.

  • DC1500V system voltage and 35A fuse

    LR8-66HYD-640W strings run to a DC1500V maximum system voltage rated to IEC and to UL, with a 35A maximum series fuse rating and a 12 Years Product, 30 Years Performance warranty.

About the LONGi Hi-MO 9 LR8-66HYD 640W

The LONGi Hi-MO 9 LR8-66HYD 640W is a Hi-MO 9 solar panel engineered for residential rooftop installations, delivering a maximum power output of 640W at 23.7% module efficiency. Under standard test conditions it produces an open-circuit voltage (Voc) of 49.42V, a short-circuit current (Isc) of 16.30A, a voltage at maximum power (Vmp) of 40.58V and a current at maximum power (Imp) of 15.61A. The panel measures 2382×1134×30mm and weighs 33.5kg, with a Weather-resistant anodized aluminum frame and Dual glass, weather-resistant semi-tempered glass. It operates across -40°C to +85°C, a maximum system voltage of DC1500V (IEC/UL) 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 9 LR8-66HYD 640W is certified by IEC 61215, IEC 61730, UL 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 9 LR8-66HYD 640W full specifications

Electrical(12)

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 Efficiency23.7%
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 ConditionSTC NOCT
Voltage at Maximum Power (Vmp/V)40.68 38.66
Current at Maximum Power (Imp/A)15.61 12.51

Mechanical(4)

Dimensions (L×W×H)2382×1134×30mm
Weight33.5kg
Frame MaterialWeather-resistant anodized aluminum frame
Glass TypeDual glass, weather-resistant semi-tempered glass

Environmental(8)

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 Loading5400Pa
Rear Side Maximum Static Loading2400Pa
Operational Temperature-40°C to +85°C
Maximum System VoltageDC1500V (IEC/UL)
Maximum Series Fuse Rating35A

Certifications(7)

  • IEC 61215
  • IEC 61730
  • UL 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 9 LR8-66HYD 640W?

The LONGi Hi-MO 9 LR8-66HYD 640W has a maximum power output of 640W and a module efficiency of 23.7%.

What are the electrical specifications (Voc, Isc, Vmp, Imp) of the Hi-MO 9 LR8-66HYD 640W?

The Hi-MO 9 LR8-66HYD 640W has an open-circuit voltage (Voc) of 49.42V, a short-circuit current (Isc) of 16.30A, a voltage at maximum power (Vmp) of 40.58V and a current at maximum power (Imp) of 15.61A.

What are the physical dimensions and weight of the Hi-MO 9 LR8-66HYD 640W?

The Hi-MO 9 LR8-66HYD 640W measures 2382×1134×30mm and weighs 33.5kg.

What static loading can the Hi-MO 9 LR8-66HYD 640W withstand?

The Hi-MO 9 LR8-66HYD 640W withstands a front-side maximum static load of 5400Pa and a rear-side maximum static load of 2400Pa.

How does the Hi-MO 9 LR8-66HYD 640W perform across temperature changes?

The Hi-MO 9 LR8-66HYD 640W 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 9 LR8-66HYD 640W?

The Hi-MO 9 LR8-66HYD 640W has a maximum system voltage of DC1500V (IEC/UL) and a maximum series fuse rating of 35A.

What certifications does the Hi-MO 9 LR8-66HYD 640W have?

The Hi-MO 9 LR8-66HYD 640W is certified by IEC 61215, IEC 61730, UL 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 9 LR8-66HYD 640W?

The Hi-MO 9 LR8-66HYD 640W 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 9 LR8-66HYD 640W use?

The Hi-MO 9 LR8-66HYD 640W uses a Weather-resistant anodized aluminum frame and Dual glass, weather-resistant semi-tempered glass.

What is the operating temperature range of the Hi-MO 9 LR8-66HYD 640W?

The Hi-MO 9 LR8-66HYD 640W operates across -40°C to +85°C.

Customer reviews