MonocrystallineBifacialBack Contact
LONGi Solar undefined LR7-54HJBB-505M

LONGi Solar • ecolife lr7-54hjbb 490-505m

LR7-54HJBB-505M505W

BifacialBack Contact
Region:China
Region shows where the seller or factory is located. Most ship globally, and all listed suppliers should be able to ship to your current location.
505W
Power Output
24.7%
Efficiency
1800 x 1134
Dimensions (mm)
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Key Features

  • Leading Black Module Efficiency
  • 70% Output Maintained when Shaded
  • Anti Shading
  • Highest Fire Safety Report Class A Fire Rating
  • High Wind Resistance Loading 6000/3600Pa
  • 60℃+ Lower Temperature under Shade
  • Prevent Overheating

LONGi Solar LR7-54HJBB-505M Panels: What Your System Looks Like

Based on a standard 10kW residential installation

10kW System Size
20 Panels
Estimated Roof Area
441 sq.ft. (41 m²)
Avg. Yearly Production
11,500 kWh
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Electrical Data (STC)

Maximum Power (Pmax)505 W
Module Efficiency24.7 %
Voltage at Pmax (Vmp)34.37 V
Current at Pmax (Imp)14.69 A
Open Circuit Voltage (Voc)41.55 V
Short Circuit Current (Isc)15.37 A

Mechanical Data

Dimensions1800 x 1134 x 30 mm
Weight23.5 kg
Cell TypeMonocrystalline
Number of Cells108
Front Glass2 mm
FrameAnodized Aluminium, Black

Temperature Ratings

Temperature Coefficient of Pmax-0.24 %/°C
Temperature Coefficient of Voc-0.21 %/°C
Temperature Coefficient of Isc0.05 %/°C
Operating Temperature Range-40 - 85 °C

Similar Products

1134 x 1800 mm
Roof Fit Tool

Will These Panels Fit Your Roof?

Don’t guess your solar potential. Our Roof Layout Designer uses the exact dimensions of the LONGi Solar LR7-54HJBB-505M (505W modules) to map out your system. Visually plan your array to see exactly how many modules your roof can support based on its specific footprint.

Precision Layout Preview: See exactly how the 505W modules sit on your roof.
Accurate Technical Spacing: Factors in real-world gaps and mounting rails.
Instant System Sizing: Automatically calculates total kW output for this specific panel.
Optimization Tips: Suggestions to maximize your roof’s energy density.
Map This Panel on My Roof

Ideal Use Case

The LONGi Solar LR7-54HJBB-505M is designed for specific solar energy applications. This panel is an excellent choice if you:

Want high-power 505W panels for better roof utilization
Maximize energy output in limited space (24.7% efficiency)
Can benefit from ground-reflected light (bifacial design)
Install in hot climates (low temperature coefficient)
Prefer sleek, all-black aesthetic design

Don’t guess your solar setup — calculate it first!

Take our Solar Quiz to get a personalized recommendation for panels, inverter, battery capacity, and system size — before you spend money on the wrong setup.

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Product FAQ

How many LONGi Solar LR7-54HJBB-505M panels do I need for my home?

The number of panels depends on your energy consumption and roof area. At 505W per panel, a typical 10kW residential system requires about 20 modules. Use our Solar Roof Calculator to get a precise layout based on your actual roof dimensions.

What is the efficiency of LONGi Solar LR7-54HJBB-505M?

This panel has an efficiency of 24.7%, using Bifacial, Back Contact cell technology. Higher efficiency means more electricity per square meter, which is especially valuable when roof space is limited.

Can I get more power from the bifacial LONGi Solar LR7-54HJBB-505M?

Yes. Since this is a Bifacial module, it can capture sunlight from both sides. Depending on the reflectivity (albedo) of your roof surface, you can see a gain of 5% to 25% in total energy yield.

What are the dimensions of the LONGi Solar LR7-54HJBB-505M?

The module dimensions are 1800mm × 1134mm × 30mm. Always account for these measurements plus fire setbacks and mounting clearances when planning your solar layout.

Is LONGi Solar LR7-54HJBB-505M compatible with standard inverters?

Yes, these panels work with most string and hybrid inverters. However, you must check the Voc (Open Circuit Voltage) and Imp (Current at Max Power) against your inverter's MPPT specs.