LONGi Hi-MO X6 Scientist 635W Solar Panel

Generate more power from less roof space with the LONGi Hi-MO X6 Scientist 635W BC-CELL Solar Panel.

The LONGi Hi-MO X6 Scientist is a premium 635W monocrystalline solar panel built on advanced BC-CELL (Back Contact Cell) technology — delivering industry-leading efficiency, ultra-low degradation, and long-term reliability for residential and commercial solar installations across South Africa. Whether you are building a new system or expanding an existing one, this panel is engineered to produce more energy per square metre over its 30-year lifetime.

Features

• Industry-Leading Efficiency: Up to 23.1% module efficiency — one of the highest available in the 600W+ panel class, maximising output from every square metre of roof space
• BC-CELL Technology: Back Contact Cell design eliminates front-side busbars, reducing shading losses and improving both aesthetics and energy yield
• Positive Power Tolerance: 0~3% positive tolerance guarantees you receive at least the rated 635W output — never less
• Ultra-Low Degradation: Less than 1% first-year degradation and only 0.35% per year from year 2–30, ensuring sustained high output over the panel's lifetime
• Lower Operating Temperature: Optimised thermal performance reduces power loss on hot South African days, delivering better real-world yields
• Dual Glass Construction: 2.0mm anti-reflective dual glass provides superior protection against moisture, UV, and mechanical stress
• IP68 Junction Box: Fully weatherproof junction box with three bypass diodes for enhanced reliability and shade tolerance
• 30-Year Linear Power Warranty: Backed by LONGi's industry-leading 30-year linear power output warranty and 15-year product warranty on materials and workmanship
• Tier-1 Manufacturer: LONGi is consistently rated a Bloomberg NEF Tier-1 solar manufacturer — a globally trusted brand with proven bankability

Specifications

• Electrical (STC: AM1.5, 1000W/m², 25°C)
  • Maximum power (Pmax): 635W
  • Module efficiency: 23.51%
  • Power tolerance: 0~3%
  • Open circuit voltage (Voc): 49.42V
  • Short circuit current (Isc): 16.30A
  • Maximum power voltage (Vmp): 40.68V
  • Maximum power current (Imp): 15.61A
• Degradation
  • First year: <1%
  • Year 2–30: 0.35% per year
• Mechanical
  • Dimensions: 2382 × 1134 × 30mm
  • Weight: 33.5kg
  • Cell type: BC-CELL monocrystalline, 132 cells (66 × 2)
  • Glass: Dual glass, 2.0mm anti-reflective coating
  • Frame: Anodised aluminium alloy
  • Junction box: IP68, three bypass diodes
  • Output cable: 4mm², 400–200mm / 1400mm
• Operating parameters
  • Operating temperature: -40°C to +85°C
  • Maximum system voltage: DC 1500V (IEC)
  • Maximum series fuse rating: 35A
  • Normal operating cell temperature (NOCT): 45 ± 2°C
  • Protection class: Class II
  • Fire rating: IEC Class C
• Temperature coefficients
  • Pmax: -0.280%/°C
  • Voc: -0.230%/°C
  • Isc: +0.050%/°C
• Mechanical loading
  • Front side (snow/wind load): 5400Pa
  • Rear side (static load): 2400Pa
  • Hail resistance: 25mm diameter at 23m/s
• Warranty
  • Product warranty: 15 years (materials and workmanship)
  • Linear power output warranty: 30 years
• Certifications: IEC 61215, IEC 61730, ISO 9001, ISO 14001, ISO 45001, ETL, CE