PLEASE NOTE THAT SOLAR PANELS ARE COURIERED AT OWN RISK !! Description Utility-Scale Solar Module for Maximum Energy Yield The LONGi 620W Bi-facial Hi-MO 7 Solar Panel is a high-output photovoltaic module engineered for commercial rooftops , ground-mounted systems , and large-scale solar farms . As part of LONGi’s Hi-MO 7 series, this panel combines ultra-high wattage, bifacial energy capture, and advanced cell technology to deliver reliable long-term performance in demanding environments. High Nominal Power Output Delivers a rated output of 620W under STC conditions , reducing the number of panels required per installation Ideal for projects targeting high power density and optimized balance-of-system costs Bifacial Energy Generation Bifacial cell design captures sunlight from both the front and rear surfaces Rear-side energy gain benefits from reflected light off ground surfaces and structures Under suitable installation conditions, total energy yield can increase by approximately 10–25% compared to monofacial modules Advanced HPDC Half-Cell Technology Utilises LONGi’s HPDC (High Performance Dual-Cell) architecture with half-cell construction Reduces resistive losses and improves performance in low-light and partial shading conditions Enhances long-term reliability and output stability for large solar investments Thermal Stability and Environmental Resistance Favourable temperature coefficient of –0.28% per °C , limiting performance losses in high-temperature climates Designed to withstand 5400Pa front-side and 2400Pa rear-side static loads Certified resistance to wind, heavy rain, and hail impact (25mm hailstones at 23m/s) Durable Construction and Warranty Coverage Dual-glass construction with semi-tempered glass for enhanced mechanical strength Anodised aluminium frame with IP68 junction box and reinforced cabling Backed by a 12-year product warranty and a 20 -year linear power output warranty , ensuring predictable long-term degradation Technical Specifications Mechanical Parameters Specification Details Cell Orientation 132 (6 × 22) Junction Box IP68, 3 diodes Output Cable 4mm², +400 / -200 mm (±1400 mm option) Glass Dual glass, 2.0 ± 2.0 mm semi-tempered Frame Anodised aluminium alloy Electrical Characteristics (STC) Specification Value Module Type LR8-66HGD-620M Maximum Power (Pmax) 620 W Open Circuit Voltage (Voc) 48.78 V Short Circuit Current (Isc) 16.05 A Voltage at Max Power (Vmp) 40.91 V Current at Max Power (Imp) 15.16 A Module Efficiency 23.0% Operating Parameters Specification Value Operating Temperature -40°C to +85°C Power Tolerance 0 ~ +3% Voc / Isc Tolerance ±3% Max System Voltage DC 1500 V (IEC/UL) Max Series Fuse Rating 35 A NOCT 45 ± 2°C Protection Class Class II Bifaciality 80 ± 5% Fire Rating UL Type 29, IEC Class C   Temperature Coefficients (STC) Parameter Coefficient Isc +0.045% / °C Voc -0.230% / °C Pmax -0.28% / °C   Installation and Warranty Notes Installation must be carried out by qualified solar professionals and mounted according to manufacturer guidelines. Warranty coverage applies subject to correct handling, installation, and system design. Suitable for commercial, industrial, and utility-scale applications where long service life and high energy yield are critical.