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JA Solar 385W Solar Panel 108 Cell JA-JAM54-S31-385MR

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All JA Solar products All 385 Watt Panels



Rated Power Output 385 W
Voltage (VOC)30.46 V
Number of cells108
Cell TypeMonocrystalline
Rated Efficiency19.7 %
Connector TypeMC4 or MC4 compatible
Backsheet Colorblack
Frame Colorblack
Dimensions LxWxH67.8 x 44.65 x 1.18 in
Weight47.4 lb
Pallet Qty36
ManufacturerJA Solar
Manufacturer Part #JAM54S31-385MR
Operating Temperatures −40°F to +185°F
Scope of Application
  • Solar Panels for Commercial
  • Solar Panels for Home
  • Commercial
  • Grid-Tie
  • Off-Grid
  • Residential
Warranty12-year warranty extendable 25 years
Delivery Time 5-7 business days

About product

JAM54-S31 is a model that uses a number of technologies to bring durability and performance to the next level. The Passivated Emitter Rear Contact (PERC) technology ensures excellent power output. This solar cell type employs an additional reflective layer to absorb more sunlight. 

Half-cut cell technology adds a few more percent to the overall performance, making this model a great example of efficiency. JA Solar made solar cells in JAM54-S31 two times smaller than the standard size, thus reducing power loss and improving low-light behavior. Given its size and weight, JAM54-S31 efficiency of 19.7% 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. JA Solar provides an industry-leading 25-year performance warranty and a 12-year product warranty. 

  • 108 half-cut PERC cells
  • 385 W nameplate capacity
  • 19.7% efficiency
  • 1500 V DC maximum system voltage
  • MC4 connectors
  • 12 years of product and 25 years of performance warranty

Higher efficiency of up to 19.7%

The highest power output is guaranteed by JA Solar JAM54-S31 with an efficiency of up to 19.7%. 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.

Exceptional performance in hot temperatures

A low temperature coefficient provides more energy output at high working temperatures. JAM54-S31 loses just 0.275 percent efficiency for every 1.8°F over 77°F.

Quality and reliability

JAM54-S31 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. JA Solar is dedicated to quality, safety and reliability to ensure you get the very best.

Reliability and degradation resistance

JA 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 385 W JA 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 3600 Pa may be supported by the model. The panel's back can support 1600 Pa, assuring that even the strongest winds won't damage your system.

Outstanding all-black design

The panel has a sleek, all-black style that complements any roof beautifully. JA Solar 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.


67.8" x 44.65" x 1.18"


47.4 lb

Reviews & Questions

  • Reviews (2)
  • Questions (2)
I'm a construction worker and we've been using these panels for a few weeks now. These are solid panels that get the job done. They're durable and can withstand the weather conditions at my worksite. It's not the cheapest option out there, but you get what you pay for. I've noticed a significant decrease in our electricity bills since installing these panels. Overall, I'm very happy with my purchase.
03/04/2023 02:39 pm
I recently purchased this JA Solar 385 W model for my home, and I am extremely pleased with the results. As an environmental consultant, I prioritize using sustainable energy sources, and this panel provides an excellent option for anyone looking to reduce their carbon footprint. The panel is efficient and reliable, producing a high output of electricity with minimal maintenance required. I only wish there were more pickup centers nearby, I hope you work on that in the future
03/01/2023 02:31 pm

Leave a review

Hi dear, Only need to buy 12 panels of 385W at this moment . It that possible ?
Sos Zinsouply
03/04/2023, 14:26
Absolutely. The minimum number of panels for delivery is six, and there is no minimum for pickup.
Do you HAVE to have panel optimizers, I don't want the added expense .
A. H.
03/02/2023, 19:29
Power optimizers are by no means necessary and should only be purchased when the potential benefits justify their cost.