In stock

Q CELLS 400W Solar Panel 132 Cell 12 Busbar Bifacial Q.PEAK DUO BLK ML-G10+/T

Minimum order – 10 panels

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

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All Hanwha Q CELLS products All 400 Watt Panels


Rated Power Output 400 W
Voltage (VOC)45.55V
Maximum String Voltage 1000V
Number of cells132
Cell TypeMonocrystalline
Rated Efficiency20.4 %
Connector TypeMC4 from Staubli
Frame Colorblack
Dimensions LxWxH74.0 × 41.1 × 1.26 in
Weight48.5 lbs
Pallet Qty32
ManufacturerHanwha Q CELLS
Manufacturer Part #Q.PEAKDUOBLKML-G10+/T400W
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
Warranty25 Year Product and Performance Warranty
Delivery Time 5-7 Business Days

About product

QCELLS Q.PEAK DUO BLK ML-G10 /T 400W is a PV module fit for both residential and commercial applications. Q CELLS engineers made the ML-G10 series durable and efficient while minimizing the amount of useful space required for their operation. 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.

To further boost the performance, Q CELLS employs half-cut cell technology. Each of the panel’s 132 cells is only half the size of a traditional solar cell. This grants Q.PEAK DUO BLK ML-G10 /T 400W lower resistive losses and better shade tolerance. Not surprisingly, the efficiency of this module is quite high – 20.4%. 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. 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 provides an industry-leading 25-year performance warranty and a 25-year product warranty.

  • 400 W power output
  • 132 half-cut Q.ANTUM cells
  • 12 busbar format
  • 20.4% efficiency
  • 1000 V DC maximum system voltage
  • Staubli MC4 connectors
  • 25-year product and 25-year performance warranties

Great productivity through the latest innovations

This Q CELLS panel provides 400 W power at 20.4% efficiency. High energy production levels are achieved through the usage of the latest advances in the solar industry, including Q.ANTUM technology and state-of-the-art antireflective coating. An efficient panel yields more per square foot and pays for itself faster.

Keeping the cool in high temperatures

Q.PEAK DUO BLK ML-G10 /T 400W manages to stay efficient even at high temperatures. For every 1.8°F above 77°F, it loses just -0.27% in efficiency, allowing you to make the most of the sunniest hours.

Quality and reliability

Q.PEAK DUO BLK ML-G10 /T 400W 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 25 years. The performance will only degrade by a maximum of 2% the first year, and then only by a maximum of 0.50% yearly after that. After the 25 years are over, your modules will still show at least 86% of nominal capacity. A substantial 25-year product warranty is also included with this Q.PEAK DUO BLK ML-G10 /T 400W solar panel.

Certified for the most extreme environmental conditions

PID, salt, acid and ammonia cannot harm Q.PEAK DUO BLK ML-G10 /T 400W. Furthermore, it has a mechanical load resistance of up to 5400 Pa in the front and 4000 Pa in the back. A layer of protective glass and 1.26" thick aluminum alloy frame are the primary reasons for its toughness.

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.


74" x 41.1" x 1.26"


48.5 lbs

Reviews & Questions

  • Reviews (3)
  • Questions (0)
Honestly, I’m clueless in solar panels, but they're doing fine. Silent heroes on my roof, saving me some bucks.Thanks to ingeneer Vic for advising
Julian T,
01/11/2024 05:49 am
Purchased 410W panels, impressed by the efficiency. Chose them for the optimal power output. Delivery from the store was swift, no complaints.
Alan Harlow
11/14/2023 12:24 pm
we went with Qcells due to the high regrets
09/28/2023 10:22 am

Leave a review


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