• GM400W high efficiency mono perc 400 watt solar panel
  • GM400W 400 watt solar panel rear

GM400W high efficiency mono perc 400 watt solar panels

monocrystalline solar panel | 400W | 30.78V | 20.70% | 1725x1134x35mm

SKU: GM400W Category:

GRANKIA GM400W high efficiency mono perc 400 watt solar panels is a renewable energy source that converts sunlight into electricity. It is a cost-effective and environmentally friendly solution for power generation, suitable for a variety of applications.

Solar energy has become an increasingly popular and sustainable source of power for both residential and commercial applications. Among the many options available, mono perc 400 watt solar panels have emerged as a powerful and efficient choice for those looking to harness the sun’s energy.

GM400W high efficiency mono perc 400 watt solar panels

400 Watt Solar Panels Features

Sleek Aesthetics

The sleek and modern design of this solar panel makes it an attractive addition to any residential or commercial installation. Its low-profile appearance blends seamlessly with various architectural styles.

Performance in Low-Light Conditions

Monocrystalline solar panels perform better than polycrystalline panels in low-light conditions. This makes them an excellent choice for locations with limited sunshine or shady areas. Even on cloudy days or during the evening hours, monocrystalline solar panels can still generate electricity, ensuring consistent performance throughout the year.

Robust construction

The panel is made of high-quality materials and is designed to withstand tough weather conditions, ensuring long-term performance and durability.

High Efficiency

The monocrystalline solar cells used in this panel are famous for their high conversion efficiency, enabling them to maximize energy production from available sunlight.

Cutting-Edge Design

Crafted with precision and innovation, this solar panel is built to last. The sleek, low-profile design not only enhances aesthetics but also minimizes wind resistance, making it ideal for both residential and commercial installations.

Easy installation

The panel comes with a standard mount and interface, making it easy to install and integrate with other solar systems.


400 Watt PV Module Solar Panel Rear

GM400W 400 watt solar panel rear

Key Applications

Off-grid power generation

The 400 watt solar panel is suitable for use in off-grid systems for powering homes, remote cabins, and other areas without access to grid power.
RV/Boat Systems: Recreational vehicles (RVs) and boats often rely on battery power for lighting, appliances, and other essential equipment. You can use the 400-watt solar panel to charge the battery bank, thereby extending the usage time between charges.

Agricultural Applications

Farmers and ranchers can use solar panels to provide power for agricultural operations, such as irrigation systems, greenhouses, and animal pens.

Emergency/Disaster Relief

In emergency or disaster situations, when grid power is off, the 400-watt solar panel can supply critical power to essential equipment like communication towers and medical centers.


When choosing a 400 watt solar panels, it’s important to consider several factors to ensure the appropriate match of panel and system requirements:

  • Panel orientation: To maximize exposure to sunlight throughout the day, the panel should typically face south or west in the Northern Hemisphere.
  • Panel tilt: The angle at which the panel is mounted can affect power output, so it should be adjusted to the optimal angle based on the location and season.
  • Panel cleanliness: Regular cleaning of the panel surface is essential to maintain its efficiency and power output. Dust and debris can block sunlight from reaching the solar cells.
  • Temperature: Solar panels are sensitive to temperature and their performance decreases as the temperature rises. To maintain a low temperature, they should install in a shaded area or equipped with ventilation.
  • System design: The system should be designed to match the load requirements and provide sufficient charging current for the battery bank. Additional batteries or charge controllers may be necessary for certain applications.

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Model No. GM400W
Product Warranty 5 Years
Power Warranty 25 Years warranty for Extra Linear Power Output
Electrical Data at STC
Maximum Power (Pmax) 400Wp
Voltage at Pmax (Vmpp) 30.78V
Current at Pmax (Impp) 13.00A
Open Circuit Voltage (Voc) 37.02V
Short Circuit Current (Isc) 13.78A
Panel Efficiency 20.70%
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) 1725x1134x35 mm
Weight 21.30Kgs
Cell Type Monocrystalline
Cell Size 182mm
Cell Number 54Pcs (6*9)
Glass Type Tempered
Glass Thickness 3.2 mm
Encapsulant Type EVA
Back Cover Type PET
Frame Type Anodized Aluminium Alloy
Junction Box Diodes 3 bypass diode
Junction Box Protection Class IP 67
Connector Type MC4
Cable Crossection 4.0mm2
Cable Length 900mm
Packing Information
Carton Size 1740x1149x83mm
Quantity / Carton 2 Pcs / CTN
Weight 43.0 Kgs
Volume 0.166CBM / CTN
20ft Container Load 264 Pcs
40HQ Container Load 752 Pcs