Out of stock

Aptos Solar 400W Solar Panel 144 cell DNA-144-BF26-400W BIFACIAL

price as of April 23
Solar Loan from 6.99%
All Aptos Solar products All 400 Watt Panels


Rated Power Output 400 W
Voltage (VOC)48.55V
Number of cells144
Cell TypeMonocrystalline
Rated Efficiency19.88%
Connector TypeMC4 or MC4 compatible
Backsheet Colorblack
Frame Colorblack
Dimensions LxWxH79.0 x 39.4 x 1.57 in
Weight51.4 lbs
ManufacturerAptos Solar
Manufacturer Part #DNA-144-BF26-400W
Operating Temperatures 45 C
Scope of Application
  • Solar Panels for Boats
  • Solar Panels for Commercial
  • Solar Panels for Home
  • Solar Panels for RV
  • Grid-Tie
  • Off-Grid
Delivery Time 5-7 business days

About product


Bifacial 400W Aptos Solar from DNA Half-cut Cell Series panel produces up to 30% more energy than standard monofacial modules. They are a great choice for commercial and utility-scale systems, but can be installed at home as well. Aptos 400W panels are very resilient in extreme weather and backed up by strong warranties.


  • Bifacial half-cut 144-cell solar module
  • 400 W rated power output
  • 19.77% efficiency
  • 25 years product warranty, up to 30 years performance warranty
  • 5400 Pa snow load/ 6200 Pa wind load capacity
  • -0.54% degradation rate

30% more efficiency with bifacial module

Aptos Solar module has solar cells on the rear side as well as on the front. It allows the panel to harvest around 30% more energy than conventional modules. You get maximum efficiency for the space that you use.

Modern technologies raise the efficiency

Patented Dual Nano Absorber (DNATM) Technology ensures higher efficiency up to 19.77%, especially at high temperatures. Besides, each Aptos 400 watt solar panel has 9 busbars which improve the flow of current inside a panel and lower power losses.

Reliable and long-longlasting

Solar cells are protected by a frame of anodized aluminum and a 3.2 mm layer of tempered glass with anti-reflective coating. Half-cut cell technology ensures the durability of the Aptos 400W panel. The module is made to withstand 5400 Pa snow loads and 5400 Pa wind load, according to Aptos 400W spec sheet. Failure rate of Aptos Solar panels is less than 0.01%.

Industry leading 30 year warranty

Not many solar manufacturers provide a product warranty that lasts longer than 10-15 years, and a 30 year performance warranty is almost unheard of. Nevertheless, Aptos Solar offers their customers a 25 year product warranty with a warranty for production for up to 30 years. After 25 years the power output of the Aptos 400W solar panel won’t fall below 85%. Optional extended warranty guarantees you over 82% of initial production after 30 years.


79.0 x 39.4 x 1.57 in



Reviews & Questions

  • Reviews (3)
  • Questions (3)
glad that you added some high-tech products in your stock. Purchased Aptos myself a while ago so here are my five stars, great panels.
08/28/2021 10:52 am
I purchased these for my shop in Alabama. My wife was very pleased, she’s all about renewables and green future. Keep up the good work!
08/17/2021 07:52 pm
Warranties is what got me. Got to be safe, i tell ya. i only saw like canadian silfab with 30 years for production before. Glad that we can make good panels as well
08/04/2021 11:50 am

Leave a review

I want these. Can you ship them to Toronto?
08/24/2021, 10:28
Good day. We are going to start delivering to Canada in the near future. We'll let you know once it is possible.
where is Aptos from. never heard of them
CarL Johnson
08/07/2021, 09:14
This is an American company. Panels are designed and engineered in Silicon Valley.
how do i maintain them?
07/06/2021, 11:53
Clean them every once in a while, perform visual inspections, invite a professional electrician to check them every few years – that’s basically it. Read the operating and installation manual for more info.


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