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495Wp
Longi Solar LR7-54HJBB-495M
Longi Solar Review

LR7-54HJBB-495M

MonocrystallineBifacial
24.30%
Efficiency
242.5 Wp/m²
Power Density
-0.240%/°C
Temp. Coeff. Pmax chart
440W from 495W
Power after 30 years
  • Efficiency of 24.3% is 1.8pp above the N-type 450-500W median (22.5%)
  • Power density of 242.5 W/m² packs 17.3 W/m² more into the same footprint vs N-type 450-500W median (225.2 W/m²)
  • Temperature coefficient of -0.24%/°C vs median -0.29%/°C means ~2% less power loss at 65°C
  • In the top 1% for efficiency among all N-type panels
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series S10 Double Glass Premium Black (LR7-54HJBB) 490~505M 4 variants
Efficiency Range 24.0% - 24.7%
Avg. Efficiency 24.38%
Technology N-type
Dimensions 1800 × 1134 mm
Show series description

Longi Solar S10 Double Glass Premium Black (LR7-54HJBB) 490-505M modules are designed for maximum energy production from limited roof surfaces – without compromising on aesthetics. Their key feature is the combination of a heterojunction with back-contact (HIBC) structure, ensuring a uniformly black module front while maximizing light capture even under less-than-ideal conditions. The double glass construction enhances operational stability and resistance to environmental factors, which is especially noticeable in installations exposed to significant temperature fluctuations or challenging weather conditions.

The main advantage of this series is its high tolerance to partial shading and minimized losses, which are common issues in many homes due to chimneys, window frames, or trees. The applied technology also reduces the risk of hot spots, contributing to safety and long-term reliability. This makes it an excellent choice for demanding premium rooftop installations where maximum yield per square meter and the total-black appearance – whether for new builds or renovations – are key priorities.

Panels from the same series differ mainly in power output while having identical dimensions. Learn why →
Electrical Parameters (STC)
Nominal Power (Pmax)495 Wp
Module Efficiency24.30%
Voltage at Max Power (Vmpp)34.17 V
Current at Max Power (Impp)14.49 A
Open Circuit Voltage (Voc)41.35 V
Short Circuit Current (Isc)15.15 A
Max System Voltage1500 V
Temperature Coefficients
Temp. Coeff. Pmax-0.240%/°C
Temp. Coeff. Voc-0.210%/°C
Temp. Coeff. Isc0.050%/°C
NOCT45°C
Cell Technology
Cell TypeMonocrystalline
Cell Count108
BifacialYes
Bifaciality Factor-
Dimensions & Weight
Length1800 mm
Width1134 mm
Height30 mm
Weight23.5 kg
Area2.04 m²
Power Density242.5 Wp/m²
Warranty
Product Warranty30 years
Performance Warranty30 years
End-of-Warranty Output88.8%
First Year Degradation1.00%
Annual Degradation0.35%/year
Key Specifications
24.30%
Efficiency
495 Wp
Power
-0.24%/°C
Temp Coeff
30 yrs
Warranty