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Astronergy 645W Solar Panel 132 Cell Bifacial CHSM66M(DG)/F-BH-645 Wholesale 31 panels per pallet

$5,698.73/pallet
$0.29 /W
StarStarStarStarStar
(17 ratings)
1 PLT
(31 pcs)
Minimum order – 31 panels

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

Customer reviews & Questions

Verified buyer reviews
Customer Reviews A1 SolarStore on trustpilot
  • Reviews (17)
  • Questions (1)
Jason
02/04/2026
Good panels overall. Heavy but solid construction. Outputting rated power consistently even in partial cloud. Wish pallet had 32 for round numbers but 31 works fine.
TRISTAN
03/30/2025
Wholesale minimum?
A1 SolarStore
One pallet (31 panels).

Specification

Length93.86 in
Width51.3 in
Rated Power Output 645 W
Voltage (VOC)45.29 V
Maximum String Voltage 1500 V
Number of cells132
Cell TypeMonocrystalline
Rated Efficiency20.8%
Connector TypeHCB40 / MC4-EVO2 (optional)
Frame Colorsilver
Dimensions LxWxH93.86 x 51.3 x 1.38 in
Weight83.78 lbs
Pallet Qty31
ManufacturerAstronergy
Manufacturer Part #CHSM66M(DG)/F-BH-645
Operating Temperatures −40°F to +185°F
Scope of ApplicationSolar Panels for Buildings
Use
  • Commercial
  • Grid-Tie
  • Off-Grid
  • Residential
Warranty15-year product warranty and 30-year linear power warranty

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Attachments

FAQ

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%.
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

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About product

CHSM66M(DG)/F-BH-645 is a model that uses a number of technologies to bring durability and performance to the next level. 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, Astronergy employs half-cut cell technology. Each of the panel’s 132 cells is only half the size of a traditional solar cell. This grants CHSM66M(DG)/F-BH-645 lower resistive losses and better shade tolerance. Not surprisingly, the efficiency of this module is quite high – 20.8%. 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. Astronergy provides 15 years of product warranty and guarantees that after 30 years, performance will be at 84.95% or more.

  • 645 W power output
  • 132 half-cut PERC cells
  • 20.8% efficiency
  • 1500 V DC maximum system voltage
  • HCB40 / MC4-EVO2 (optional) connectors
  • 15-year product warranty and 30-year linear power warranty

More power and efficiency

An already high efficiency of 20.8% is further enhanced by PERC technology. By adding a solid PID resistance and special glass lamination on top, the manufacturer ended up with an efficient and very durable model. Under standard test conditions, CHSM66M(DG)/F-BH-645 outputs 645 W of power.

High-quality standards

Astronergy's 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

Slow degradation over the next 30 years is guaranteed by Astronergy. The performance will decrease no more than 2% during the first year and 0.45% annually thereafter. Your modules will retain at least 84.95% of their original performance after 30 years. This 645 W Astronergy solar panel also comes with a generous 15-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 alloy. 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.

Size

93.86" x 51.3" x 1.38"

Weight

83.78 lb

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