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645Wp
Longi Solar LR7-72HYD-645M
Longi Solar Review

LR7-72HYD-645M

MonocrystallineBifacial
Datasheet
23.90%
Efficiency
238.8 Wp/m²
Power Density
-0.260%/°C
Temp. Coeff. Pmax chart
573W from 645W
Power after 30 years
Smart Insights (data-driven)
  • At 23.9% efficiency, this panel is 1.1pp above typical N-type 600-650W modules (median: 22.8%)
  • At 238.8 W/m² power density, this panel generates 11.1 W/m² more per unit area than N-type 600-650W median (227.7 W/m²)
  • At -0.26%/°C (vs median -0.29%/°C), loses ~1% less power in hot conditions
  • Weight of 33.5 kg is typical for N-type 600-650W panels
  • Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series Hi-MO 9 LR7-72HYD 625~660M 8 variants
Efficiency Range 23.1% - 24.4%
Avg. Efficiency 23.77%
Technology N-type
Dimensions 2382 × 1134 mm
Show series description

The Longi Solar Hi-MO 9 LR7-72HYD 625-660M series was designed to maximize yield in PV farms, where power density per hectare and stable performance under real-world conditions are key. Its core feature is the HPBC 2.0 back-contact cells — without front busbars for collecting current, more light reaches the silicon directly, and the module looks aesthetically pleasing while delivering higher performance even under weaker sunlight.

In practice, the biggest advantage of the Hi-MO 9 is higher tolerance to partial shading losses. The current flow architecture in BC, combined with an integrated shading management approach, helps minimize production drops and the risk of localized overheating, which is crucial for installations with uneven irradiance, dirt accumulation, or periodic shading.

Additionally, the use of 0BB and advanced passivation solutions supports reliability and long-term parameter stability. This is the series for investors and EPCs who want to extract more energy from the same surface area and stand out with higher yields, rather than just the module price.

Panels from the same series differ mainly in power output while having identical dimensions. Learn why →
Electrical Parameters (STC)
Nominal Power (Pmax)645 Wp
Module Efficiency23.90%
Voltage at Max Power (Vmpp)44.77 V
Current at Max Power (Impp)14.41 A
Open Circuit Voltage (Voc)54.12 V
Short Circuit Current (Isc)15.06 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 Density238.8 Wp/m²
Warranty
Product Warranty12 years
Performance Warranty30 years
End-of-Warranty Output88.8%
First Year Degradation1.00%
Annual Degradation0.35%/year
Key Specifications
23.90%
Efficiency
645 Wp
Power
-0.26%/°C
Temp Coeff
30 yrs
Warranty
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