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Limited stock

QCELLS 585W Solar Panel 156 Cell Bifacial Q.PEAK DUO XL-G11S.3/BFG-585

$272.73
Strong buyer interest
(234 ratings)
Q&A
Max
Minimum order – 10 panels

We have changed the number of solar panels to comply with shipping terms. More info

Customer reviews & Questions

Verified buyer reviews
Customer Reviews
  • Reviews (234)
  • Questions (3)
Pierre L.
06/25/2025
Good shade tolerance half-cut cells working as promised. Tree shadows minimal impact.
WILLIAM
12/01/2025
How much maintenance needed
A1 SolarStore
Minimal. Rinse 2-3 times yearly. Bifacial dual-glass design naturally resists dirt accumulation.
marko petrovic
07/14/2025
wind and snow load tell me please ?
A1 SolarStore
5,400 Pa front load, 2,400 Pa rear load. Engineered for harsh climates and severe conditions.
greg c.
04/21/2025
how much power rear side
A1 SolarStore
10-30% additional energy from rear depending on surface albedo. White roofs or light ground maximize gain.

Specification

Length96.9 in
Width44.6 in
Rated Power Output 585 W
Voltage (VOC)53.57 V
Maximum String Voltage 1500 V
Number of cells156
Cell TypeMonocrystalline
Rated Efficiency21.0%
Connector TypeStäubli MC4 / Stäubli MC4-Evo2
Frame Colorsilver
Dimensions LxWxH96.9 x 44.6 x 1.38 in
Weight76.9 lbs
ManufacturerHanwha Q CELLS
Manufacturer Part #Q.PEAKDUOXL-G11S.3/BFG-585
Operating Temperatures −40°F to +185°F
Scope of Application
  • Solar Panels for Boats
  • Solar Panels for Buildings
  • Solar Panels for Home
  • Solar Panels for RV
Use
  • Commercial
  • Grid-Tie
  • Off-Grid
  • Residential
Warranty12-year product warranty and 30-year performance warranty

Close-wattage solar panels

9 products

Attachments

FAQ

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%.
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

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About product

Among the newest offerings of Q CELLS, Q.PEAK DUO XL-G11S.3/BFG-585 is part of the Q.PEAK DUO XL-G11S series. These panels use state-of-the-art technology to achieve high efficiency and dependability. Q.ANTUM is an advanced PERC technology developed by Q CELLS. The company employs a special nano coating on the rear of the cells to reflect the sunlight and generate more electricity.

To further boost the performance, Q CELLS employs half-cut cell technology. Each of the panel’s 156 cells is only half the size of a traditional solar cell. This grants Q.PEAK DUO XL-G11S.3/BFG-585 lower resistive losses and better shade tolerance. As a result, the panel achieves an impressive efficiency of 21.0%. And while conventional panels use only one side to absorb photons, bifacial modules employ both sides at the same time. Thanks to the technology, this model can be up to 30% more efficient. Q CELLS provides a 12-year product warranty. Stable power output is also guaranteed — performance warranty will protect you for 30 years.

  • 585 W power output
  • 156 half-cut Q.ANTUM cells
  • 21.0% efficiency
  • 1500 V DC maximum system voltage
  • Stäubli MC4 / Stäubli MC4-Evo2 connectors
  • 12-year product warranty and 30-year performance warranty

High efficiency of 21.0%

Q CELLS Q.PEAK DUO XL-G11S panels have a high efficiency of 21.0 percent and take full advantage of the company's technologies, which have won Q CELLS several honors. This Q.ANTUM option produces more electricity per square foot of PV modules. This translates to shorter installation times and fewer clamps and racks. All of this lowers your overall expenditures and shortens the payback period.

Quality and reliability

Q.PEAK DUO XL-G11S.3/BFG-585 receives multiple quality checks throughout the manufacturing process and is subject to stringent quality and reliability testing. The manufacturing facilities are highly automated, eliminating the risk of human error. Q CELLS is dedicated to quality, safety, and reliability to ensure you get the very best.

Reliability and degradation resistance

Q CELLS guarantees limited degradation over the ensuing 30 years. The performance will only degrade by a maximum of 2% the first year, and then only by a maximum of 0.45% yearly after that. After 30 years, your modules will still show at least 84.95% of nominal capacity. A substantial 12-year product warranty is also included with this 585 W Q CELLS solar panel.

A panel that can handle hail, wind, and snow

The 1.38" frame, built of anodized aluminum alloy and a layer of protective tempered glass make this module weather-resistant. The front side of the modules can withstand a 5400 Pa load, whereas the back side can withstand a 2400 Pa load.

Size

96.9" x 44.6" x 1.38"

Weight

76.9 lb

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