LonGi 400W Solar Panel Overview:
The LonGi 400W Solar Panel (LR5-54HABB, 390-415 Watt) offers premium performance and cutting-edge technology designed for distributed solar energy projects. This panel utilizes the Hi-MO 5 module technology, featuring M10 gallium-doped wafers, 9-busbar half-cut cells, and segmented ribbons, all of which contribute to enhanced efficiency and reduced power degradation. With a maximum efficiency of 21.3%, this module provides superior energy yields even in challenging conditions. Its robust design ensures long-term reliability, backed by a 25-year product warranty and a 30-year linear power warranty, making it ideal for residential, commercial, and utility-scale applications.
LonGi 400 Watt Solar Panel Key Features:
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High Efficiency: Maximum module efficiency of 21.3%, ensuring optimal power generation.
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Minimal Power Degradation: Less than 2% power loss in the first year and 0.45% annual degradation from years 2 to 30, maintaining more than 84.95% of the initial power output after 30 years.
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Half-Cut Cell Technology: Reduces resistive losses and operating temperature, increasing energy production in low-light and shaded conditions.
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Bifacial Design: Enables energy generation from both sides of the panel, increasing total energy output by up to 25%.
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Durable Construction: Withstands high static loads of 5400Pa (front) and 2400Pa (rear), making it suitable for installations in extreme environments.
LonGi 400W Solar Panel Specifications:
Mechanical Parameters |
|
Cell Orientation |
108 (6×18), half-cut cells |
Junction Box |
IP68, three diodes |
Output Cable |
4mm², 1200mm in length |
Glass |
Dual glass, 2.0+1.6mm heat-strengthened glass |
Frame |
Anodized aluminum alloy frame |
Weight |
22.5 kg |
Dimensions |
1722 × 1134 × 30 mm |
Packaging |
36 pieces per pallet, 792 pcs per 40'HC |
Operating Parameters |
|
Operational Temperature |
-40°C ~ +85°C |
Power Output Tolerance |
0 ~ +3% |
Maximum System Voltage |
1500V DC (IEC & UL) |
Maximum Series Fuse Rating |
30 A |
Nominal Operating Cell Temp |
45 ± 2°C |
Bifaciality |
70% ± 5% |
Fire Rating |
UL Type 1 or 2 |
Electrical Characteristics:
Model Number |
LR5-54HABB-390M |
LR5-54HABB-395M |
LR5-54HABB-400M |
LR5-54HABB-405M |
LR5-54HABB-410M |
LR5-54HABB-415M |
Maximum Power (Pmax) |
390 W |
395 W |
400 W |
405 W |
410 W |
415 W |
Open Circuit Voltage |
36.6 V |
36.8 V |
37.0 V |
37.2 V |
37.4 V |
37.5 V |
Short Circuit Current |
13.57 A |
13.65 A |
13.73 A |
13.79 A |
13.84 A |
13.87 A |
Voltage at Max Power |
30.47 V |
30.70 V |
30.84 V |
30.94 V |
31.06 V |
31.16 V |
Current at Max Power |
12.80 A |
12.87 A |
12.93 A |
12.99 A |
13.05 A |
13.11 A |
Module Efficiency |
20.2% |
20.3% |
20.5% |
20.7% |
21.0% |
21.3% |
Bifacial Rear Power Gain:
Rear Power Gain |
Pmax/W |
Voc/V |
Isc/A |
Vmp/V |
Imp/A |
Power Gain |
5% |
420 W |
37.05 V |
14.41 A |
30.94 V |
13.58 A |
+5% |
10% |
440 W |
37.05 V |
15.09 A |
30.94 V |
14.22 A |
+10% |
15% |
460 W |
37.15 V |
15.79 A |
31.04 V |
14.87 A |
+15% |
20% |
480 W |
37.15 V |
16.46 A |
31.04 V |
15.52 A |
+20% |
25% |
500 W |
37.15 V |
17.15 A |
31.04 V |
16.04 A |
+25% |
Temperature Ratings (STC):
Parameter |
Coefficient |
Temperature Coefficient of Isc |
+0.050%/°C |
Temperature Coefficient of Voc |
-0.265%/°C |
Temperature Coefficient of Pmax |
-0.340%/°C |
Mechanical Loading:
Loading Type |
Rating |
Front Side Maximum Static Loading |
5400Pa |
Rear Side Maximum Static Loading |
2400Pa |
Hailstone Test |
25mm hailstone at 23m/s |
Certifications:
- IEC 61215, IEC 61730, UL 61730
- ISO 9001:2015 (Quality Management System)
- ISO 14001:2015 (Environmental Management System)
- ISO 45001:2018 (Occupational Health & Safety)
Warranty:
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25-year product warranty for materials and processing.
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30-year linear power warranty, with annual power attenuation of 0.45%, ensuring over 84.95% power output after 30 years.
The LonGi 400W Solar Panel offers exceptional performance and durability. With advanced half-cell technology and dual glass construction, it is optimized for distributed solar projects, ensuring reliable energy production even in demanding environments. Its bifacial design allows for enhanced power output, maximizing returns on investment for both residential and commercial installations.
LonGi 400W Datasheet

Longi 400W Solar Panel (LR5-54HABB, 390-415 Watt) - Hi-MO6 Advanced Module Technology. Suitable for distributed projects, this module delivers superior efficiency with gallium-doped wafer and integrated segmented ribbons. Half-cut cell design ensures high bifacial energy yield and long-term reliability.
