Out of stock

REC 405W Solar Panel 132 Cell REC405AA Pure Clearance

price as of May 26
Solar Loan from 6.99%
All REC products All 405 Watt Panels



Rated Power Output 405 W
Voltage (VOC)48.9 V
Maximum String Voltage 1000V
Number of cells132
Cell TypeMonocrystalline
Rated Efficiency21.9 %
Connector TypeMC4
Backsheet Colorblack
Frame Colorblack
Dimensions LxWxH71.7 x 40 x 1.2 in
Weight45 lb
Manufacturer Part #REC405AAPure
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
  • Grid-Tie
  • Off-Grid
Warranty20/25 Years See warranty details
Delivery Time 5-7 business days

About product

REC405AA is part of the Alpha Pure Black Series. Amazing performance of this panel is combined with improved tolerance to high temperatures and outstanding quality.

These panels have higher energy density than conventional modules — an impressive 20.3 watts/ft². Heterojunction technology (HJT) is one of the keys to achieving this success. HJT combines the best features of crystalline and thin-film silicon and shows better performance than the industry’s standard PERC cells. REC also literally packed solar cells more densely, virtually eliminating gaps. The busbars also had to leave the surface. At 21.9% efficiency, REC Alpha 405W offers surprising performance for its weight and size.

The innovations made the appearance of the REC 405 solar panel as impressive as the specs. A mere 1.2" thick, this model is completely black, without any visible busbars or gaps. This beauty doesn’t require sacrifice: the panels are lead-free and carry a reduced carbon footprint. Nor is it short-lived: REC offers 20 years of product warranty and guarantees 92% of original performance after 25 years of operation.

  • 405 W output
  • 132 half-cut heterojunction cells
  • Maximum system voltage: 1000V
  • 21.9% efficiency
  • Open circuit voltage: 46.1V
  • MC4 connectors

Higher efficiency of up to 21.9%

REC405AA guarantees the highest power output. HJT technology and potent antireflective coating result in 21.9% module efficiency. The model has a power tolerance of ±3%.

Excellent performance in adverse weather

Low temperature coefficient means greater energy production at high operating temperatures. REC 405 Alpha Pure loses just 0.26% of efficiency for every 1.8°F above 77°F.

Quality and reliability

REC 405 Alpha Pure Black 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. REC is dedicated to quality, safety, and reliability to ensure you get the very best.

Reliability and degradation resistance

Slow degradation over the next 25 years is guaranteed by the manufacturer. The performance will decrease no more than 2% during the first year and then will be limited to 0.25% annually. Your modules will retain at least 92% of original performance after the 25 years are over. This 405W REC solar panel comes with a generous 20-year product warranty

A panel that can handle hail, wind and snow

The 1.2" frame made from anodized aluminum alloy and a layer of protective tempered glass make this module resistant to the foulest of weather. The front side of the modules can resist a 7000 Pa load, and the back side 4000 Pa, according to REC 405W spec sheet.


71.7" x 40" x 1.2"


45 lbs

Reviews & Questions

  • Reviews (3)
  • Questions (3)
The panels were shipped by the company I trust and arrived undamaged in under a week. A1Solar are very fast, responsive and diligent. I was lucky to end up making my first equipment purchase here
05/11/2022 03:04 pm
Our relatives told us about A1. We’re passing on the recommendation - the store is reliable and honest. Picked the panels ourselves, so nothing to say about the delivery
Belinda Hoyt
04/14/2022 11:46 am
Premium quality and looks, but quite expensive. If you want the best panels and super eco-frindly on top of that, look no further
LaRee W.
04/02/2022 05:45 pm

Leave a review

hi! Do you ship panels by R&L?
05/11/2022, 15:02
Yes, we work with the top freight carriers, including R&L.
if I opt for pickup, I don’t have to pay for delivery, right?
Toya Herman
05/01/2022, 16:58
Yes, the pickup option is absolutely free of charge.
Are 2 half-cut cells about the size of one full-sized solar cell?
D. Wildermuth
04/30/2022, 11:00


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