GM40W small pv renewable energy 12v 40 watt solar panel

monocrystalline solar panel | 40W | 18.24V | 17.50% | 570x400x25mm

SKU: GM40W Category:

GRANKIA GM40W small pv renewable energy 12v 40 watt solar panel is a high-quality photovoltaic module designed to harness the power of the sun and convert it into clean, renewable energy. This solar panel is built using monocrystalline solar cells, known for their efficiency and durability, making it an excellent choice for various solar applications.
GM40W small pv renewable energy 12v 40 watt solar panel

12V 40 Watt Solar Panel Features

Monocrystalline Solar Cells

This monocrystalline solar panel is with high-grade monocrystalline solar cells, known for their superior efficiency in converting sunlight into electricity. This ensures maximum power generation, even in low-light conditions.

12V Output

The panel is designed to provide a stable 12-volt output, making it suitable for charging 12V batteries or powering 12V devices directly.

Durable Construction

The panel features a robust, weather-resistant construction that can withstand various environmental conditions, including rain, snow, and strong winds.

Easy Installation

It comes with pre-drilled holes and mounting brackets, facilitating easy and secure installation on rooftops, RVs, boats, or other surfaces.

Compact and Portable

Its compact size and lightweight design make it ideal for a range of uses. It is including permanent installations and portable applications.


The panel requires minimal maintenance, offering hassle-free operation and long-term cost savings.

40 Watt Solar Panel Rear

GM40W 12v 40w solar panel rear

GM40W 12v 40w solar panel junction box

Product Benefits

  • Harnesses clean, renewable energy from the sun.
  • Reduces electricity bills and carbon footprint.
  • Reliable and low-maintenance power source.
  • Suitable for a wide range of applications.
  • Durable construction for long-term use.

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Model No. GM40W
Product Warranty 5 Years
Power Warranty 25 Years warranty for Extra Linear Power Output
Electrical Data at STC
Maximum Power (Pmax) 40Wp
Voltage at Pmax (Vmpp) 18.24V
Current at Pmax (Impp) 2.19A
Open Circuit Voltage (Voc) 21.80V
Short Circuit Current (Isc) 2.39A
Panel Efficiency 17.50%
Power Tolerance +/- 3%
Standard Test Conditions (STC): air mass AM 1.5, irradiance 1000W/m2, cell temperature 25°C
Nominal Operating Cell Temperature (NOCT): 800W/m2, AM 1.5, windspeed 1m/s,ambient temperature 20°C
Thermal Ratings
Operating Temperature Range -40 °C ~ 85 °C
Temperature Coefficient of Pmax -0.35 %/°C
Temperature Coefficient of Voc -0.275 %/°C
Temperature Coefficient of Isc 0.048 %/°C
Maximum Ratings
Maximum System Voltage 1000V
Material Data
Panel Dimension (H/W/D) 570x400x25 mm
Weight 2.80Kgs
Cell Type Monocrystalline
Cell Size 182mm
Cell Number 32Pcs (2*16)
Glass Type Tempered
Glass Thickness 3.2 mm
Encapsulant Type EVA
Back Cover Type PET
Frame Type Anodized Aluminium Alloy
Junction Box Diodes /
Junction Box Protection Class IP 67
Connector Type /
Cable Crossection /
Cable Length /
Packing Information
Carton Size 580x410x135mm
Quantity / Carton 5 Pcs / CTN
Weight 15.0 Kgs
Volume 0.032CBM / CTN
20ft Container Load 3925 Pcs
40HQ Container Load 10360 Pcs