R 1,350.00 R 1,500.00

Taxes included. Shipping calculated at checkout.

☀️ LONGi 420W Monofacial Solar Panel

Model: LR5-54HPB-420M
Brand: LONGi Solar
Series: Hi-MO 5m
Type: Monofacial Monocrystalline Solar Panel
Cell Technology: M10 Gallium-Doped Monocrystalline Half-Cell
Application: Residential, Commercial & Distributed Solar PV Systems

⚡ Key Features

High-Efficiency 420W Output ☀️
Delivers up to 420W of rated power with an impressive 21.5% module efficiency, maximizing energy generation from limited roof space.

Premium All-Black Design 🏡
Stylish all-black finish blends seamlessly into residential rooftops while maintaining outstanding performance.

Advanced Half-Cell Technology ⚡
108 half-cut monocrystalline cells reduce resistive losses, improve temperature performance, and deliver greater energy production under partial shading.

Gallium-Doped Cell Technology 🌞
Advanced gallium-doped wafers significantly reduce Light-Induced Degradation (LID), improving long-term energy production and reliability.

Exceptional Durability 🛡️
Built with 3.2 mm coated tempered glass and a robust anodized aluminium alloy frame for excellent resistance to harsh weather conditions.

Excellent Long-Term Performance 📈
Designed for decades of reliable energy generation with less than 2% first-year degradation and only 0.55% annual degradation thereafter.

IP68 Junction Box Protection 💧
Sealed IP68-rated junction box provides superior weather resistance for long-term outdoor operation.

📐 Specifications

Specification	Value
Rated Power (Pmax)	420 W (STC)
Module Efficiency	21.5%
Cell Technology	Gallium-Doped Monocrystalline Half-Cell
Module Type	Monofacial
Cell Configuration	108 Cells (6 × 18)
Maximum Power Voltage (Vmp)	31.93 V
Maximum Power Current (Imp)	13.16 A
Open Circuit Voltage (Voc)	38.00 V
Short Circuit Current (Isc)	13.90 A
Power Tolerance	0 ~ +3%
Maximum System Voltage	1500 V DC
Junction Box	IP68, 3 Bypass Diodes
Output Cable	4 mm², ±1200 mm
Front Glass	3.2 mm Coated Tempered Glass
Frame	Anodized Aluminium Alloy
Weight	20.8 kg

📏 Physical Specifications

Specification	Details
Dimensions	1722 × 1134 × 30 mm
Weight	20.8 kg
Front Glass	3.2 mm Coated Tempered Glass
Frame	Black Anodized Aluminium
Packaging	36 Panels per Pallet

🔧 Technical & Build

Specification	Details
Cell Type	M10 Gallium-Doped Monocrystalline
Busbars	9 Busbar Technology
Module Type	Monofacial
Operating Temperature	-40°C to +85°C
Temperature Coefficient (Pmax)	-0.340% / °C
Temperature Coefficient (Voc)	-0.265% / °C
Temperature Coefficient (Isc)	+0.050% / °C
NOCT	45 ± 2°C
Mechanical Load	Engineered for High Wind & Snow Loads

ℹ️ Additional Information

The LONGi Hi-MO 5m 420W Monofacial Solar Panel combines premium aesthetics with advanced monocrystalline technology to deliver excellent efficiency and dependable long-term performance.

Its gallium-doped half-cell architecture improves energy production, reduces operating temperatures, and minimizes long-term degradation, making it an ideal solution for residential rooftops, commercial buildings, and distributed solar projects.

The sleek all-black appearance enhances the look of modern roof installations while providing industry-leading reliability and consistent power generation throughout its service life.

🏷️ Certifications

IEC 61215
IEC 61730
UL 61730
IEC 62941
ISO 9001:2015 Quality Management System
ISO 14001:2015 Environmental Management System
ISO 45001:2018 Occupational Health & Safety Management System

🏷️ Quality & Support

The LONGi 420W Monofacial Solar Panel delivers high efficiency, premium aesthetics, and exceptional long-term reliability for residential and commercial solar installations. Featuring advanced gallium-doped monocrystalline half-cell technology and a durable all-black design, it is engineered to maximise energy production while maintaining dependable performance for decades. Backed by a 12-year product warranty and a 25-year linear performance warranty, it offers a reliable and cost-effective solar solution for modern photovoltaic systems.

(SPECSHEET)