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Phono 400W Solar Panel 108 Cell TwinPlus M6-10BB

All Phono Solar products All 400 Watt Panels



Rated Power Output 400 W
Voltage (VOC)36.84
Maximum String Voltage 1000/1500V
Number of cells108
Cell TypeMonocrystalline
Rated Efficiency20.48
Connector TypeMC4 or MC4 compatible
Backsheet Colorblack
Frame Colorblack
Dimensions LxWxH67.8 x 44.65 x 1.18 in
Weight45.8 lb
ManufacturerPhono Solar
Manufacturer Part #PS400M6-10BB
Operating Temperatures −40°F to +185°F
Scope of Application
  • Solar Panels for Commercial
  • Solar Panels for Home
  • Commercial
  • Grid-Tie
  • Off-Grid
  • Residential
Warranty25 years Manufacture
Delivery Time 5-7 business days

About product

Among the newest offerings of Phono Solar, PS400M6-10BB is part of the TWINPLUS series. These panels use state-of-the-art technology to achieve high efficiency and dependability. This panel takes full advantage of the Passivated Emitter Rear Contact (PERC) technology that allows it to capture up to 12% more energy. All thanks to a reflective layer on the back. This design maximizes the number of photons absorbed by solar cells. 

Half-cut cell technology adds a few more percent to the overall performance, making this model a great example of efficiency. Phono Solar made solar cells in PS400M6-10BB two times smaller than the standard size, thus reducing power loss and improving low-light behavior. Given its size and weight, PS400M6-10BB efficiency of 20.48% is quite impressive. Novel design solutions allow this panel to look as well as it performs. This model is just 1.18" in depth and is jet black with a sleek finish. The panel's functionality and durability are not affected by its aesthetic appeal though. Phono Solar provides an industry-leading 25-year performance warranty and a 25-year product warranty. 

  • 400 W power output
  • 108 half-cut PERC cells
  • 20.48% efficiency
  • 1500 V DC maximum system voltage
  • MC4 connectors
  • 25-year product and 25-year performance warranties

Higher efficiency of up to 20.48%

The highest power output is guaranteed by Phono Solar PS400M6-10BB with an efficiency of up to 20.48%. Such outstanding performance is the product of PERC technology and an effective antireflective coating. This is notably above average, which will translate into significant additional savings over the course of operation.

Better performance at high temperatures

Excellent temperature coefficient means more energy as temperature rises. Every 1.8°F hike above 77°F will decrease your panel’s efficiency by only 0.05%.

Quality and reliability

PS400M6-10BB 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. Phono Solar is dedicated to quality, safety and reliability to ensure you get the very best.

Low degradation for a longer lifespan

These panels will lose no more than 2% of their power output in the first year of service. From the 2nd year to the 25th year, the average annual power decline will be no more than 0.55%. The module retains over 84.8% of its original output after 25 years. Guaranteed by Phono Solar.

Improved frame design

PS400M6-10BB design makes it suitable for both residential and business rooftops. The use of a strong 1.18" frame composed of anodized aluminum boosts durability and strength. The model can withstand a significant snow load of up to 5400 Pa. The panel's back can withstand 2400 Pa, guaranteeing that your system will resist even the fiercest winds.

Outstanding all-black design

The panel features all-black design which looks great on any roof. The manufacturer ensures excellent cell color by special treatment and selection processes. Phono Solar engineers use thinner wires to connect the cells together, and at a distance the surface of the modules appears smooth and uninterrupted.


67.8" x 44.65" x 1.18"


45.8 lb

Reviews & Questions

  • Reviews (3)
  • Questions (2)
Pickup is one thing that most of the other solar stores don't have and A1 does. No more worrying about getting broken panels or waiting for days, just make an order and pick it up the next day after work. But it is very disappointing to discover that a panel you need is not available at a nearby fulfillment center. I hope you fix this in the future
Miles Teg
04/19/2023 06:55 am
Cheap and reliable
Pat Hughes
04/19/2023 06:45 am
I installed the Phono 400 W solar panels on my roof and I'm happy with how they're performing. The installation was straightforward and the modules look well-made. I like that it packs a lot of power in a compact size. I haven't had any issues with so far, and I get quite a bit of energy even on cloudy days. Overall, I would recommend this panel to anyone looking for a reliable, cheap and high-performing panels.
Dave Construction
04/15/2023 03:59 am

Leave a review

Looking at backup solar power for home. Can these panels just be leaned against a fence or ground frame to charge, and then taken in to store when not being used?
Ken Winterstein
04/18/2023, 07:08
There's nothing that would prevent you from using these panels in the manner described. However, the modules come without handles or kickstands, so you have to account for any inconvenience this may cause.
Can I pick these panels myself in my own car somewhere near Tampa?
Ron con Hielo
04/17/2023, 07:15
When you’re viewing a panel, a list of all available pickup locations is to the right under “Availability”. You can also click "Change location" on the product's page and a map with all available locations will appear.


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