LONGi Solar Hi-Mo 5m LR5-54HPH-420M Solar Module 420 Watt Black Frame 12 Years Product Warranty

The LONGi LR5-54HPH-420M is a high-efficiency 420 Wp module from the Hi-Mo 5m family, built on M10 gallium-doped, half-cut monocrystalline cells (108 cells). It delivers an STC efficiency of about 21.5%, comes in a single-glass (glass-sheet) construction with an anodized black frame, and is optimized for distributed and residential/commercial rooftop systems (dimensions 1722 × 1134 × 30 mm, weight ~20.8 kg). — Data and datasheet details.

• High power density — 420 Wp in a compact 54-cell format for higher energy per roof area.
• Good efficiency — ~21.5% module efficiency for excellent area utilisation.
• Proven cell technology — M10 gallium-doped, half-cut cells reduce resistive losses and improve low-light performance.
• Installer-friendly electricals — MPP around 31.73 V / 13.24 A (typical) for easy string sizing with mainstream inverters. 
• Robust mechanics — standard LONGi build with tempered glass, anodized frame and IP68 junction box; suitable up to typical 1500 V systems. 
• Trusted warranty & track record — LONGi offers established product and performance warranties (manufacturer warranty & linear power guarantee details available per regional datasheet).

• Nominal power (Pmax): 420 Wp.
• Cell / technology: M10 gallium-doped monocrystalline, half-cut cells (108 cells). 
• Module type / construction: Single-glass, framed (black frame / white backsheet option). 
• Module efficiency (STC): ≈ 21.5%. 
• Dimensions (L × W × H): 1722 × 1134 × 30 mm. 
• Weight: ~20.8 kg.
• Electrical (typical STC): Vmp 31.73 V, Imp 13.24 A, Voc 37.75 V, Isc 14.01 A. 
• Temperature coeff. (Pmpp): about −0.34% / °C (site-dependent in datasheet). 
• Max system voltage / Junction box: up to 1500 V DC / IP68 junction box (three diodes). 
• Warranty: Manufacturer product warranty (commercially listed as 12 years in many regions) and long-term linear performance guarantee—see regional datasheet for exact figures (first-year and year-by-year guarantees). 

The LR5-54HPH-420M pairs high specific power (420 Wp) with proven Hi-Mo 5m cell technology and compact dimensions — a great fit for rooftop and distributed PV projects where yield per m² matters. Purchase securely through SolarTraders: certified EU distributors, transparent price comparison and buyer protection make procurement straightforward. Register now and request a tailored project offer for volume pricing and delivery options.

Suitable for distribution projects, advanced module technology delivers superior module efficiency, excellent outdoor power geneartion, and high module quality ensures long term reliability.

LONGi Solar is one of the world’s leading manufacturers of high-performance modules. With state-of-the-art Mono-PERC and HPBC technology, their modules deliver maximum efficiency, long lifespan, and reliable yields – from residential rooftops to large-scale solar parks. With best price guarantee, fast delivery, and attractive B2B conditions, LONGi Solar is the first choice for professional solar installers.