Out of stock

Q CELLS 420W Solar Panel 144 Cell DUO L-G6

price as of July 23
All Hanwha Q CELLS products All 420 Watt Panels


Rated Power Output 420 W
Voltage (VOC)48.88V
Number of cells144
Cell TypeMonocrystalline
Rated Efficiency19.6%
Connector TypeMC4 or MC4 compatible
Backsheet Colorblack
Frame Colorblack
Dimensions LxWxH81.9" x 40.6" x 1.4" in
Weight55.0 lbs
ManufacturerHanwha Q CELLS
Manufacturer Part #QCELLSDUOL-G6420SolarPanel
Operating Temperatures -40 °F to +185 °F
Scope of Application
  • Solar Panels for Boats
  • Solar Panels for Commercial
  • Solar Panels for Home
  • Solar Panels for RV
  • Grid-Tie
  • Off-Grid
Warranty12-year warranty extendable 25 years
Delivery Time 5-7 business days

About product

Q.PEAK is a great panel from Korean Hanwha Q CELLS group primarily for commercial installations and ground-based systems. It shows impressive 19 % efficiency and works well in all kinds of weather.


  • 420W power output
  • Over 19.6% efficiency
  • 144 monocrystalline cells
  • Maximum system voltage: 1500V
  • MC4 connectors
  • 12 years warranty for product, 25 years performance warranty

Good efficiency for building powerful systems

Q.PEAK panel shows a 19.6% energy conversion rate or higher which is better than average numbers on the market. With Q CELLS solar panels you can build a powerful system that occupies a reasonable amount of space.

Works well in all kinds of weather

The panel shows optimal yields even at high temperatures and in low-light conditions. Korean PV modules perform well in cloudy weather and in the winter. Extreme weather conditions aren’t a threat; solar cells are protected by high-tech aluminium alloy frame, which is certified for high snow (5400Pa) and wind loads (2400Pa).

Reliable investment protected by warranties

Q CELLS panels come with a 12-year product warranty and 25-year performance warranty. The module doesn’t lose more than 2% of its power in the first year of service. After that the annual degradation rate is no more than 0.54% of power output per year. The panel retains over 85% of its output by the end of year 25.


2080 mm × 1030 mm × 35 mm



Reviews & Questions

  • Reviews (1)
  • Questions (0)
I searched for an off grid solutions for 5 years. Finally discovered A1 Solar store. WOW what a welcome change, finally people who knew what options and equipment to put together and how we can build a lifestyle not crimped and scavengers in the wilderness.
12/21/2020 06:15 am

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How much is shipping and how long is delivery?
Our standard shipping charge is $250 for up to 11 panels and it is increased by $25 for every 4 additional panels. In the event, the product is only available on East or West coast custom quote will be sent to you before the order is processed. Normally, we are able to deliver solar panels within 7 business days.
What is the difference between low price panels and top price panels?
With top tier solar panels, you pay for the brand name, proprietary new technology, higher energy output, and better warranty support.
What are the dimensions of the panel?
Please refer to the product datasheet on the product page. We have a datasheet for every product we sell.
How long is the warranty on the panel?
In general, manufacturers provide a 25 year-long performance warranty and a 10 year-long equipment guarantee. Some manufacturers offer 12-15 years of warranty. More information is available in our warranty support section.
Which panels do you recommend for RV, marine?
We recommend Panasonic and Mission Solar panels for smaller systems as their high energy output and excellent craftsmanship guarantee years of service.
Can this panel be used with a 12v system?
Any of our panels can be used for a 12v system with a properly selected inverter and charge controller.
Can I pick up this panel from your fulfillment center to save on shipping?
Yes, we can set up a pick up at a local distributor. Please call to discuss options and stock availability.
How do I connect these panels?
To achieve the best system efficiency, panels should be connected in series to create higher voltage.
How many panels do I need?
This number is determined by your average energy needs. Depending on the type of panels and energy consumption, you might need anywhere from 12 to 45 solar panels. Remember, the more panels you install the more energy you will get.Please use our solar calculator to estimate your energy consumption and plan on building a solar system that will exceed your energy needs by 25%.
Do you offer discounts?
We do offer discounts for orders of over 50 units. Please contact us for details.
How do I build a solar system?
Please use our solar calculator to estimate what equipment you need. Choose your panels, microinverters, inverters, and solar batteries if necessary.Please note that we do not offer solar system design or installation.
How do solar panels compare?
Solar panels differ by power output, voltage, connection type, size, efficiency, and weight. Some solar panels might be sold together with microinverters as a set.
Can I build a solar system by myself as a Do It Yourself project?
Yes, it is possible if you understand what solar equipment you need and how to connect it together. However, please be mindful that handling your own electrical work without having proper experience might cause life-threatening injuries. Please contact a certified electrician if you do not possess appropriate electrical skills.
Can I connect and charge my solar panel battery directly with the solar panel?
We do not recommend using the solar panel without the charge controller. Using solar panels without the charge controller might damage the batteries.
Can I drill holes into the aluminum frame for mounting?
We do not recommend drilling any new holes to the aluminum frame of the panel as it could damage the internal circuit and solar cells. (Also, any modification to the panel will void the warranty). We recommend only using the pre-drilled holes for mounting.
Do solar panels require maintenance? Can I wash my solar panel?
Solar panels generally require very little maintenance. We recommend cleaning the solar panel with water, glass cleaner (Windex) and microfiber cloth.
Will my panel produce power in an overcast condition?
While solar panels require sunlight to generate solar energy, they will still work in cloudy weather. Even on a cloudy day, solar panels will produce energy just not as much.
Will my panels produce power if covered with snow?
Solar panels cannot produce electricity if covered with snow.
What is the best direction for a solar panel to face?
The best direction for a solar panel to face is the South