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490Wp
Longi Solar LR7-54HVB-490M
Longi Solar Review

LR7-54HVB-490M

Monocrystalline
Datasheet
24.00%
Efficiency
240.1 Wp/m²
Power Density
-0.260%/°C
Temp. Coeff. Pmax chart
435W from 490W
Power after 30 years
Smart Insights (data-driven)
  • Efficiency of 24.0% is 1.5pp above the N-type 450-500W median (22.5%)
  • At 240.1 W/m² power density, this panel generates 14.9 W/m² more per unit area than N-type 450-500W median (225.2 W/m²)
  • -0.26%/°C temperature coefficient (median: -0.29%/°C) - retains ~1% more power at high temperatures
  • Weight of 21.6 kg (1.9 kg below N-type 450-500W median of 23.5 kg) allows easier transport and roof mounting
  • #214 for efficiency, #457 for temperature performance out of 11672 panels
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series X10 Single Glass Premium Black (LR7-54HVB) 5 variants
Efficiency Range 23.3% - 24.3%
Avg. Efficiency 23.78%
Technology N-type
Dimensions 1800 × 1134 mm
Show series description

The Longi Solar X10 Single Glass Premium Black (LR7-54HVB) series was designed for maximum energy production on limited rooftop surfaces, without compromising on aesthetics. The use of n-type cells and HPBC (back contact) technology minimizes losses due to shading and uneven sunlight exposure, while also improving module performance in low-light conditions. This is a practical advantage in the Polish context – near chimneys, window frames, or trees, where traditional panels often lose yield.

The single glass variant facilitates installation in typical rooftop setups while maintaining high resistance to loads and weather factors. Visually, it stands out with its uniform, deep black finish – Premium Black is an excellent choice for investors seeking a discreet and cohesive installation that complements modern roofing.

The LR7-54HVB series is suitable for single-family homes and small commercial properties, where high power density, stability, and long-term profitability, thanks to the extended linear power warranty, are essential.

Panels from the same series differ mainly in power output while having identical dimensions. Learn why →
Electrical Parameters (STC)
Nominal Power (Pmax)490 Wp
Module Efficiency24.00%
Voltage at Max Power (Vmpp)33.51 V
Current at Max Power (Impp)14.63 A
Open Circuit Voltage (Voc)40.52 V
Short Circuit Current (Isc)15.33 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 Count108
BifacialNo
Bifaciality Factor-
Dimensions & Weight
Length1800 mm
Width1134 mm
Height30 mm
Weight21.6 kg
Area2.04 m²
Power Density240.1 Wp/m²
Warranty
Product Warranty-
Performance Warranty30 years
End-of-Warranty Output88.8%
First Year Degradation1.00%
Annual Degradation0.35%/year
Key Specifications
24.00%
Efficiency
490 Wp
Power
-0.26%/°C
Temp Coeff
30 yrs
Warranty
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