Victron Energy 305W-20V Mono Solar Panels – SPM043052004

The Victron Energy 305W-20V Mono Solar Panel is a premium monocrystalline PV module designed for high output in residential, off-grid, vehicular, or hybrid solar systems. Engineered with advanced materials and precision manufacturing, it delivers excellent performance even in low-light and high-temperature conditions. With its substantial 305W nominal power, robust frame, and excellent warranty, this panel is built to last and excel.
Whether you’re powering a 24V battery bank, a MPPT charge controller, or building larger solar arrays, this panel offers reliable power, solid structural integrity, and long-term performance. It’s a strong choice for homes, farms, mobile setups, or any system where dependable solar generation is needed.
Key Features:

Premium monocrystalline solar cells for high efficiency and improved performance under shading or partial light conditions

Strong nominal power rating of 305 Watts, enabling higher energy yield per panel 

High voltage output suitable for stringing or using with high-voltage MPPT controllers (Vmp ≈ 32.5 V; Voc ≈ 39.7 V)

Low temperature-coefficient to mitigate performance loss under heat

Durable frame and tempered glass for mechanical strength, resistance to wind, snow, and hail
Waterproof junction box and bypass diodes to maintain power output even when parts of the panel are shaded

Long product and performance warranties: 5 years for materials and workmanship; ~10 years for ~90% power, ~25 years for ~80% power retention

Technical Specifications:

Nominal Power (Pmax): 305 W 

Voltage at Maximum Power (Vmp): ~32.5 V 

Current at Maximum Power (Imp): ~9.38 A 

Open-Circuit Voltage (Voc): ~39.7 V 

Short-Circuit Current (Isc): ~10.27 A 

Cell Type: Monocrystalline (72 cells in series)

Efficiency: ~18.35 % (as typical for victron 305W mono models)

Dimensions (L × W × H): 1658 × 1002 × 35 mm 

Weight: ~18-19 kg (depending on variant)

Operating Temperature Range: −40 °C to +85 °C

Maximum System Voltage: 1000 V DC 

Cable & Connectors: ~900 mm MC4 connector leads

If you’re looking for a solar panel that combines strong output, durable build, and modern design, the Victron Energy 305W-20V Mono Solar Panel delivers. It’s especially well suited for use with MPPT controllers, for installations that demand higher voltages, and in environments where conditions are challenging (heat, partial shading, etc.).