The Longi LR5-54HTB-440M is a premium solar panel designed for superior performance and aesthetic appeal in both residential and commercial installations. This pure black panel combines elegant design with exceptional energy generation capability, making it a standout choice.
Performance Specifications
The panel delivers 440W of maximum power under Standard Test Conditions (STC), with an impressive module efficiency of 22.5%. It features an open circuit voltage (Voc) of 39.83V and short circuit current (Isc) of 14.15A. At maximum power point, it operates at 33.56V (Vmp) with a current of 13.12A (Imp). Under Nominal Operating Cell Temperature (NOCT) conditions, it still produces a substantial 329W of power.
Design & Construction
Built with 108 cells arranged in a 6×18 configuration, the LR5-54HTB-440M features a single 3.2mm coated tempered glass design protected by an anodized aluminum alloy frame. The panel weighs 20.8kg and measures 1722×1134×30mm. It includes an IP68-rated junction box for superior weather protection and comes with a 4mm² output cable.
Durability & Reliability
Engineered to withstand harsh environmental conditions, this panel can handle maximum static loading of 5400Pa on the front side and 2400Pa on the rear side. It's also tested to withstand 25mm hailstones at speeds of 23m/s. The panel operates efficiently across a wide temperature range (-40°C to +85°C) with a power temperature coefficient of -0.290%/°C.
Warranty & Degradation
Longi provides exceptional coverage with a 25-year warranty for both materials/processing and linear power output. The panel exhibits minimal power degradation – less than 1.5% in the first year and only 0.40% annually from years 2-25, ensuring 88.9% of the original output even after 25 years of operation.
Certifications & Safety
The LR5-54HTB-440M meets rigorous international standards including IEC 61215, IEC 61730, and UL 61730. It also complies with ISO9001:2015 (Quality Management), ISO14001:2015 (Environmental Management), and ISO45001:2018 (Occupational Health and Safety). The panel is rated Class II for electrical protection and has a fire rating of UL type 1 or 2 / IEC Class C.
System Integration
With a maximum system voltage of DC1500V and maximum series fuse rating of 25A, this panel is designed for versatile integration into various solar power systems, making it an excellent choice where performance, reliability, and aesthetics are paramount.
Technical Specifications
| Electrical Characteristics (STC) |
| Maximum Power (Pmax) |
440W |
| Module Efficiency |
22.5% |
| Open Circuit Voltage (Voc) |
39.83V |
| Short Circuit Current (Isc) |
14.15A |
| Voltage at Maximum Power (Vmp) |
33.56V |
| Current at Maximum Power (Imp) |
13.12A |
| Electrical Characteristics (NOCT) |
| Maximum Power |
329W |
| Open Circuit Voltage (Voc) |
37.40V |
| Short Circuit Current (Isc) |
11.43A |
| Voltage at Maximum Power (Vmp) |
30.62V |
| Current at Maximum Power (Imp) |
10.75A |
| Temperature Characteristics |
| Temperature Coefficient of Pmax |
-0.290%/°C |
| Temperature Coefficient of Voc |
-0.230%/°C |
| Temperature Coefficient of Isc |
+0.050%/°C |
| Operating Temperature Range |
-40°C to +85°C |
| Nominal Operating Cell Temperature |
45±2°C |
| Mechanical Characteristics |
| Cell Configuration |
108 cells (6×18) |
| Dimensions |
1722×1134×30mm |
| Weight |
20.8kg |
| Front Glass |
3.2mm coated tempered glass |
| Frame |
Anodized aluminum alloy |
| Junction Box |
IP68 rated |
| Output Cable |
4mm², ±1200mm |
| Maximum Ratings |
| Maximum System Voltage |
DC1500V (IEC/UL) |
| Maximum Series Fuse Rating |
25A |
| Front Side Max. Static Loading |
5400Pa |
| Rear Side Max. Static Loading |
2400Pa |
| Hail Resistance |
25mm at 23m/s |
| Warranty & Degradation |
| Warranty for Materials and Processing |
25 years |
| Warranty for Extra Linear Power Output |
25 years |
| First Year Degradation |
<1.5% |
| Annual Degradation (Years 2-25) |
0.40% |
| Power Output After 25 Years |
88.9% of original |
| Certifications |
| Quality & Safety |
IEC 61215, IEC 61730, UL 61730 |
| Management Systems |
ISO9001:2015, ISO14001:2015, ISO45001:2018 |
| Protection Class |
Class II |
| Fire Rating |
UL type 1 or 2 / IEC Class C |
