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Q CELLS 320W Solar Panel 120 cells Q.PEAK DUO BLK G5

Solar Loan from 6.99%
All Hanwha Q CELLS products All 320 Watt Panels



Rated Power Output 320 W
Voltage (VOC)40.56 V
Maximum String Voltage 1000V
Number of cells120
Cell TypeMonocrystalline
Rated Efficiency19 %
Connector TypeMC4 or MC4 compatible
Backsheet Colorblack
Frame Colorblack
Dimensions LxWxH66.3 × 39.4 × 1.26 in
Weight41.23 lb
Pallet Qty32
ManufacturerHanwha Q CELLS
Manufacturer Part #Q.PEAK-DUO-BLK-G5-320
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
  • Commercial
  • Grid-Tie
  • Off-Grid
  • Residential
Warranty12-year warranty extendable 25 years
Delivery Time 5-7 business days

About product

Among the newest offerings of Q CELLS, QPDB-G5 320W is part of the Q.PEAK DUO BLK-G5 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 back and generate more electricity.

The use of half-cut cell technology is an additional perk. The solar cells of QPDB-G5 320W are half the size of those found in standard panels. Major advantages include reduced power consumption, extended life and enhanced efficiency in low-light conditions. Given its size and weight, QPDB-G5 320W efficiency of 19% is quite impressive. The innovations made the appearance of the panel as impressive as the specs. A mere 1.26" thick, this model is completely black with a smooth surface. This beauty doesn’t compromise the quality or reliability of the panel. Q CELLS offers 12 years of product warranty and guarantees 85.04% of original performance after 25 years of operation.

  • 320 W power output
  • 120 half-cut Q.ANTUM cells
  • 19% efficiency
  • 1000 V DC maximum system voltage
  • MC4 connectors
  • 12-year product and 25-year performance warranties

More energy and efficiency

The Q.ANTUM technology further improves an already excellent efficiency of 19 percent. A reliable PID resistance and a unique glass lamination were added by the maker, which ultimately produced a model that was effective and extremely durable. QPDB-G5 320W produces 320 W of power under typical test settings.

Heat-resistant performance

This module makes the heat less dangerous since it has one of the lowest temperature coefficients in the market, losing just 0.28% of efficiency for every 1.8°F over 77°F.

Quality and reliability

QPDB-G5 320W undergoes various quality checks during the production process and is subjected to serious quality and reliability testing. Manufacturing facilities are highly automated, removing the possibility of human errors. Q CELLS is committed to quality, safety, and dependability to ensure you get the finest.

Reliability and degradation resistance

Q CELLS guarantees slow deterioration over the next 25 years. The performance will decline by no more than 2% during the first year and then by no more than 0.54% every year after that. After the 25 years are over, your modules will retain at least 85.04% of their original performance. This 320 W Q CELLS solar panel also comes with a substantial 12-year product warranty.

A panel that can handle hail, wind and snow

The 1.26" frame made from anodized aluminum and a layer of protective tempered glass make this module resistant to the foulest of weather. The front side of the modules can resist a 5400 Pa load, and the back side 4000 Pa.

Outstanding all-black design

The panel has a sleek, all-black style that complements any roof beautifully. Q CELLS uses unique treatment and selection procedures to guarantee optimum cell color. The cells are connected by thinner wires, and from a distance, the surface of the modules seems seamless and smooth.


66.3" x 39.4" x 1.26"


41.2 lb

Reviews & Questions

  • Reviews (3)
  • Questions (3)
These Q Cells panels are sleek, efficient, and generate energy even on cloudy days. We have noticed a significant decrease in our energy bills since we installed the system. We would highly recommend this solar panel to anyone who is looking for a reliable and high-performing option at a very attractive price.
03/04/2023 10:43 am
I recently purchased a few of these Q CELLS 320W Solar Panels for my home pool and I am extremely satisfied with their performance. As an engineer, I appreciate the high efficiency and durability of this model. The sleek black design also blends in nicely with my home's aesthetics. The thing the spoiled the fun a little was a single cracked panel at the bottom. At least A1 replaced it without hassle. The transportation service should be more careful
03/04/2023 10:32 am
It's compact, efficient, made by a German quality and only a little above $200. Pure gold.
adam vaughan
03/02/2023 12:40 am

Leave a review

Can this panel be used either AC or DC? I see both AC & DC spec.
03/04/2023, 06:53
Like all PV modules without an integrated microinverter this model outputs direct current (DC).
What is the UL or IEC rating on these panels? Are they hail rated?
03/02/2023, 17:05
This model comes with the following certifications: UL 1703; IEC 61215:2016; IEC 61730:2016. The model has successfully passed a hail test.
do these panels have any anti glare properties?
03/01/2023, 01:58
This panel is protected by pre-stressed glass with anti-reflection technology


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