Longi 620w Hi-MO 7 Solar Panel

The LONGi Hi-MO 7 is a cutting-edge bifacial solar module engineered for high efficiency, long-term performance, and outstanding energy yield. Built with advanced HPDC (High Performance Hybrid Passivated Dual-Junction) cell technology, it delivers superior reliability and long-term power output, making it ideal for utility-scale, commercial, and large C&I installations.

Key Features & Benefits

  • High Efficiency: Achieves up to ~23% module efficiency in upgraded versions.
  • HPDC Cell Technology: Hybrid passivated dual-junction cells provide optimized electricity conversion, lower resistive losses, and improved durability.
  • Bifacial Power Generation: With a bifacial ratio of ~80%, the module can generate up to ~3% more energy compared to conventional bifacial modules.
  • Low Power Degradation: Designed to degrade at only ~0.4% per year, offering a strong long-term performance guarantee.
  • Excellent Temperature Performance: Power temperature coefficient of –0.28%/°C, helping maintain high output even under high heat.
  • Reduced BOS Costs: Higher power output (~4.5% gain vs. mainstream) means fewer modules needed, saving on racking, inverters, cabling, land, and AC-side equipment.
  • Durability & Load Capacity: Built with a 30 mm high-strength aluminum alloy frame, IP68 junction box, and 3 bypass diodes for reliability.
  • Mechanical Resilience: Rated for up to 5,400 Pa front-side static load and 2,400 Pa back-side — ideal for harsh weather.
  • Robust Warranty: 12-year product warranty and 30-year linear power warranty, backed by LONGi’s quality assurance.

Technical Specifications

ParameterValue
ModelLR7-72HGD / LR8-66HGD (Hi-MO 7)
Maximum Power (Pmax)~610 W
Module Efficiency~22.6% (or up to ~23% in newer versions)
Cell Configuration144 cells (6×24)
Operating VoltageVmp ~ 40.51 V (for 610 W version)
Temperature Coefficient (Pmax)–0.28% / °C
Module Dimensions2278 × 1134 × 30 mm (other versions: 2382 × 1134 mm)
Weight~31.8 kg
Junction BoxIP68, split, 3 diodes
Load CapacityFront: 5,400 Pa · Back: 2,400 Pa · Hail test: 25 mm @ 23 m/s
Operating Temperature Range–40 °C to +85 °C

Ideal Applications

  • Large-scale utility solar farms
  • Commercial rooftops (factories, warehouses)
  • C&I (commercial & industrial) solar projects
  • Ground-mount systems with high reflectivity surfaces
  • Projects in hot or high-irradiance areas thanks to excellent temperature coefficient

Why Choose Hi-MO 7?

If you’re looking for a solar module that offers maximum energy yield, long-term reliability, and lower Levelized Cost of Energy (LCOE), the Hi-MO 7 is a top contender. Its advanced HPDC cell design, long warranties, and high bifacial rate mean more power, less degradation, and better returns over decades.