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Canadian Solar 400W Solar Panel CSI CS6R-400MS-HL

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Pay $32.76 / month
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Minimum order – 6 panels

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

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All Canadian Solar products All 400 Watt Panels



Rated Power Output 400 W
Voltage (VOC)36.8 V
Maximum String Voltage 1000/1500V
Number of cells108
Cell TypeMonocrystalline
Rated Efficiency20.45%
Connector TypeMC4 or MC4 compatible
Backsheet Colorblack
Frame Colorblack
Dimensions LxWxH67.8 x 44.6 x 1.18 in
Weight47 lb
Pallet Qty30
ManufacturerCanadian Solar
Manufacturer Part #CS6R-400MS-HL
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

CS6R-400MS-HL is part of the HiKu6 Series — one of the most recent made by Canadian Solar. These panels employ cutting-edge technologies to achieve superior efficiency and reliability. 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.

To further boost the performance, Canadian Solar employs half-cut cell technology. Each of the panel’s 108 cells is only half the size of a traditional solar cell. This grants CS6R-400MS-HL lower resistive losses and better shade tolerance. At 20. 5% efficiency, CS6R-400MS-HL offers surprising performance for its weight and size. Cell surface, back foil and frame are completely black, giving the model unrivaled aesthetics. Canadian Solar offers 12 years of product warranty and guarantees 84. 8% of original performance after 25 years of operation.

  • 108 half-cut PERC cells
  • 400 W nameplate capacity
  • 20. 5% efficiency
  • 1500 V DC maximum system voltage
  • MC4 connectors
  • 12 years of product and 25 years of performance warranty

High efficiency of 20.5 percent

Canadian Solar HiKu6 panels fully use the firm's innovations, which Canadian Solar has received several distinctions for. With PERC technology, more electricity can be produced per square foot of PV modules. As a result, there will be less clamps and racks required during installation. All of which lowers your overall expenses and accelerates the payback period.

Heat-resistant performance

The heat is less of a threat with this module: with one of the lowest temperature coefficients in the industry, CS6R-400MS-HL loses just 0. 05% of efficiency for every 1. 8°F above 77°F.

High quality standards

Canadian Solar strict manufacturing standards include multiple tests to provide extreme quality assurance. The facilities are highly automated, allowing the company to maintain high standards and keep the level of warranty claims very low.

Reliability and degradation resistance

Canadian Solar 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. 55% every year after that. After the 25 years are over, your modules will retain at least 84. 8% of their original performance. This 400 W Canadian Solar solar panel also comes with a substantial 12-year product warranty.

Enhanced frame design

This model's construction makes it perfect for both residential and business rooftops. Durability and strength are increased by using a strong, robust frame built from anodized aluminum. A significant snow load of up to 5400 Pa may be supported by the model. The panel's back can support 2400 Pa, assuring that even the strongest winds won't damage your system.

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. Canadian 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 44.6" x 1.18"


47 lb

Reviews & Questions

  • Reviews (3)
  • Questions (3)
these soler panals are pretty good, they work okay and save me some money on my electricty bill. sometimes they have some small issues, but overall not bad at all.
12/28/2023 02:14 pm
wow, these solar panels are a game changer! my bills have gone way down. The service is really good, thanks a1solarstore.
09/03/2023 07:48 pm
not gonna lie, these solar pannels are just average. they do their job, but nothing exceptional. i expected more for the price i paid.
06/12/2023 07:15 pm

Leave a review

are they 60 or 72 cell format for microinverter determiation
Jim House
09/04/2023, 19:31
They are 108 cell [2 X (9 X 6)]
how long does it take to recoup the investment in them?
07/14/2023, 22:05
The savings you can expect with these solar panels vary depending on factors such as your energy consumption, sunlight availability, and local electricity rates. On average, many users experience significant reductions in their electricity bills. Check out our Calculator to get an estimation!
what kind of savings can I expect with these solar panels?
03/29/2023, 08:35
The payback period for these solar panels depends on factors such as your energy usage, electricity rates, and available incentives. On average, many users recoup their investment within 5 to 10 years through energy savings.