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665Wp
Longi Solar LR7-72HVD-665M
Longi Solar Review

LR7-72HVD-665M

MonocrystallineBifacial
Datasheet
24.60%
Efficiency
246.2 Wp/m²
Power Density
-0.260%/°C
Temp. Coeff. Pmax chart
591W from 665W
Power after 30 years
Smart Insights (data-driven)
  • 24.6% module efficiency - 1.3pp better than the N-type 650-700W median of 23.3%
  • 246.2 W/m² power density - 13.7 W/m² more than N-type 650-700W median (232.5 W/m²), more power per roof area
  • -0.26%/°C temperature coefficient (median: -0.29%/°C) - retains ~1% more power at high temperatures
  • 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces
  • #36 for efficiency, #457 for temperature performance out of 11672 panels
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series Hi-MO X10 Scientist (LR7-72HVD 640~665M) 6 variants
Efficiency Range 23.7% - 24.6%
Avg. Efficiency 24.15%
Technology N-type
Dimensions 2382 × 1134 mm
Show series description

Longi Solar Hi-MO X10 Scientist (LR7-72HVD 640-665M) is designed to maximize energy yield where every square meter counts and production predictability is key. Its foundation is HPBC 2.0 back-contact technology, an architecture with contacts moved to the rear side—eliminating front-side metal pathways that hinder light absorption. In practice, this translates to better real-world performance, not just in the lab.

A key advantage is the built-in shading optimizer, which minimizes losses when shade from a chimney, branch, or rooftop installation falls on the panel. Additionally, the 0BB (zero busbar) structure efficiently collects current and enhances aesthetics, often a crucial factor in visible rooftop installations. The applied multilayer structure helps utilize light more effectively and stabilize long-term performance.

This is an excellent choice for demanding rooftop systems, commercial installations, and C&I projects where resilience to partial shading and high module efficiency are significant advantages.

Panels from the same series differ mainly in power output while having identical dimensions. Learn why →
Electrical Parameters (STC)
Nominal Power (Pmax)665 Wp
Module Efficiency24.60%
Voltage at Max Power (Vmpp)45.17 V
Current at Max Power (Impp)14.72 A
Open Circuit Voltage (Voc)54.52 V
Short Circuit Current (Isc)15.35 A
Max System Voltage1500 V
Temperature Coefficients
Temp. Coeff. Pmax-0.260%/°C
Temp. Coeff. Voc-0.200%/°C
Temp. Coeff. Isc0.050%/°C
NOCT45°C
Cell Technology
Cell TypeMonocrystalline
Cell Count144
BifacialYes
Bifaciality Factor70%
Dimensions & Weight
Length2382 mm
Width1134 mm
Height30 mm
Weight33.5 kg
Area2.70 m²
Power Density246.2 Wp/m²
Warranty
Product Warranty15 years
Performance Warranty30 years
End-of-Warranty Output88.8%
First Year Degradation1.00%
Annual Degradation0.35%/year
Key Specifications
24.60%
Efficiency
665 Wp
Power
-0.26%/°C
Temp Coeff
30 yrs
Warranty
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