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Silfab 490W Solar Panel 156 Cell SIL-490-HN

All Silfab products All 490 Watt Panels


Rated Power Output 490 W
Voltage (VOC)54.05 V
Maximum String Voltage 1500V
Number of cells156
Cell TypeMonocrystalline
Rated Efficiency20.9%
Connector TypeMC4
Backsheet Colorwhite
Frame Colorsilver
Dimensions LxWxH89 x 40.8 x 1.37 in
Weight56.9 lbs
Pallet Qty31
Manufacturer Part #SIL-490-HN
Operating Temperatures -40℃ to + 85℃
Scope of Application
  • Solar Panels for Boats
  • Solar Panels for Commercial
  • Solar Panels for Home
  • Solar Panels for RV
  • Grid-Tie
  • Off-Grid
Warranty12-year warranty extendable 25 years
Delivery Time 5-7 business days

About product

Silfab SIL-490 HN is a PV module created for large and small commercial applications. Silfab engineers made these panels durable and efficient, while minimizing the amount of useful space required for their operation. One of the keys to making these panels ideal for commercial use is the half-cut cell technology. The SIL-490 HN has solar cells half the size of those installed in conventional panels. The main benefits are decreased power loss, improved longevity and better low-light performance.

The efficiency of this model reaches 20.9% – well above the market’s average. The robust silver frame can easily handle even the strongest winds and heaviest snowfalls. The rear of the panel is ready for loads up to 2400 Pa and the front for up to 5400 Pa. The warranties provided by Silfab are also among the best in the industry. The 12-year product warranty is extendable to 25  years, and the linear performance warranty lasts three decades.

Key features

  • Engineered specifically for North American climates with maximum wind and snow loads of 5400 Pa and 2400 Pa
  • The default 12-year warranty is extendable to 25 years upon completing a registration process on Silfab website
  • Half-cut cell technology for better low-light performance and higher overall efficiency
  • 82.6% or more of the initial capacity will be left after a 30-year warranty period
  • Access to the Enphase Enlighten monitoring platform
  • 20.9% efficiency

Reviews & Questions

  • Reviews (3)
  • Questions (3)
The experience of the purchase of the 2 Silfab 490W Solar Panels was a very positive experience. We purchased online of course, then the great communications from A1 Solar started to streamline the product pickup procedure. At the warehouse facility, we were guided to the pickup area and assisted in loaded the panels securely into the back of our truck. We then tested the panels for a week connected to our Bluetti AC200Max with 2 B300 solar backup system. I highly recommend the A1 Solar Store.
Dwight P.
11/09/2023 12:27 pm
The actual power output is comparable to what was stated. There hasn't passed enough time to say much else about the system. As for A1, I can honestly say that I have seldom had such a positive experience dealing with a firm in any industry. Authentic experts!
James K. Warthen
12/19/2022 02:36 am
The panels have performed admirably and effectively. An attractive option for a large system. The cells are not checkerboard blue, but black, it's a pro for me.
12/17/2022 08:27 am

Leave a review

Does this panel have built in inverter ? If no do you sell them.
08/31/2023, 18:01
No, it doesn't. But you can find solar inverters here: https://a1solarstore.com/inverters.html
is your permanent mount 490 watt solar panel Compatible with a 500 watt portable power station?
11/10/2022, 23:52
This solar panel comes with standard MC4 connectors which a power station should support. Still, make sure this is the case, there are many models out there.
Can I connect these with Anderson interface cable into my solar generator?
April Radcliff
04/13/2022, 22:51
Depends on the specs of your generator. If it supports the wattage and voltage of the panels, as well as the standard MC4 connectors, they should be compatible.


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