LonGi 645W Solar Panel Overview
The LonGi 645W Solar Panel (LR7-72HYD) is an advanced bifacial solar module designed for optimal performance and efficiency in utility-scale solar power generation. Featuring TaiRay wafer and BC technology, this module ensures more than a 6.5% power generation gain, providing reliable performance throughout its lifecycle. With a 12-year warranty on materials and a 30-year warranty for linear power output, this panel stands out for its long-term durability and energy production capabilities.
LonGi Solar 645W Key Features:
- High Power Output: 645W power capacity with more than 6.5% power generation gain through advanced TaiRay and BC technology.
- Bifacial Design: Utilizes both the front and rear sides to capture more sunlight, achieving up to 70%-95% bifaciality.
- Durable and Reliable: Dual-glass design with tempered glass provides robust protection in all environmental conditions.
- Long Warranty Period: 12-year warranty for materials and processing, plus 30 years for linear power output, ensuring long-term reliability.
- High Efficiency: 24.4% maximum module efficiency, minimizing energy loss even in extreme conditions.
LonGi 645W Datasheet
Mechanical Parameters:
- Cell Orientation: 144 cells (6 x 24 configuration)
- Junction Box: IP68 rated, with three diodes
- Output Cable: 4mm², +400mm to -200mm, length customizable up to ±1400mm
- Glass: Dual glass, 2.0+2.0mm semi-tempered
- Frame: Anodized aluminum alloy for extra durability
- Weight: 33.5kg
- Dimensions: 2382mm x 1134mm x 30mm
- Packaging: 36 pcs per pallet / 144 pcs per 20' GP / 720 pcs per 40' HC
Electrical Characteristics:
- Maximum Power (Pmax): 645W
- Open Circuit Voltage (Voc): 53.00V
- Short Circuit Current (Isc): 14.85A
- Voltage at Maximum Power (Vmp): 44.16V
- Current at Maximum Power (Imp): 14.62A
- Module Efficiency: 23.1% at standard test conditions (STC)
- Bifaciality: 70%-95%
Operating Parameters:
- Operational Temperature: -40°C to +85°C
- Maximum System Voltage: 1500V DC (IEC/UL)
- Nominal Operating Cell Temperature (NOCT): 45±2°C
- Fire Rating: IEC Class C, UL Type 29
Temperature Ratings (STC):
- Coefficient of Isc: +0.050%/°C
- Coefficient of Voc: -0.230%/°C
- Coefficient of Pmax: -0.260%/°C
Mechanical Loading:
- Front Side Maximum Static Loading: 5400Pa
- Rear Side Maximum Static Loading: 2400Pa
- Hailstone Test: 25mm hailstones at a speed of 23m/s
Certifications:
The LonGi 645W Solar Panel complies with global safety and performance standards, ensuring top-tier reliability and efficiency:
- IEC 61215, IEC 61730, UL 61730
- ISO9001:2015, ISO14001:2015, ISO45001:2018
- TUV, CE, SGS
Application:
The LonGi 645 Watt Solar Panel is ideal for utility-scale solar power projects where maximum efficiency and power output are required. Its bifacial design makes it suitable for installations in various climates and terrains, capturing solar energy from both sides of the module. Common applications include:
- Solar Farms: Large-scale installations aiming for high energy yield.
- Commercial Rooftops: Maximizes energy production in space-constrained environments.
- Ground-mounted Systems: Suitable for open field projects requiring durable and long-lasting panels.
Warranty:
The LonGi 645W Solar Panel comes with extensive warranties to ensure its long-term performance:
- 12-Year Warranty: Covers materials and processing defects.
- 30-Year Linear Power Output Warranty: Guarantees at least 88.85% of the initial power output after 30 years of continuous use.
LonGi 645 Watt Solar Panel Details
The LonGi 645W Solar Panel (Bifacial, LR7-72HYD 625-660M) features optimal power generation throughout its lifecycle. Performance improvements lead to over 6.5% more power generation. The TaiRay wafer and BC technology enhance high-quality wafers through smart manufacturing. LONGi product lifecycle standards ensure exceptional product quality with a 12-year warranty for materials and processing, as well as a 30-year warranty for extra linear power output.
LonGi 645W Solar Panel (Bifacial, LR7-72HYD 625~660M)
LONGI 645W Solar Panel (Bifacial, LR7-72HYD, 625-660M) Product Image: LONGI Solar Panels Present an Innovative and High-Efficiency Solution LONGI 645W Bifacial Solar Panel with LR7-72HYD Series 625-660M Power Output
The LonGi 645W Solar Panel (Bifacial, LR7-72HYD 625-660M) product image shows a small-scale commercial solar power station in Jiangsu using Longi Hi-MO X6 solar panels.



