RICH SOLAR MEGA 400 | 400W Solar Panel for Grid-tie or Off-grid Use | Residential, Commercial, Agriculture | 25-Year Warranty | UL Certified
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Free Shipping In The USA | Call Us: 877-556-3347
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Build Your Perfect Off-Grid Rig With Our System Calculator
Visit CalculatorThe RICH SOLAR MEGA 400 is a high-efficiency 400W solar panel built for both off-grid and grid-tied applications. Designed for residential, commercial, and agricultural use, this premium panel delivers superior output and long-term durability with a 25-year power output warranty. Whether you're upgrading your rooftop array or building a large-scale energy project, this UL Certified panel offers the performance and reliability you can count on.

High Output Efficiency
Designed with advanced mono PERC cells to produce up to 400 watts of power—ideal for maximizing production in limited space.
UL Certified & Safe
UL 61730 Certified for electrical and fire safety—meets rigorous U.S. standards for residential and commercial solar systems.
Weatherproof Durability
Built to withstand harsh environments—IP68 junction box, 5400 Pa snow load, and 2400 Pa wind load ratings.
Anti-Reflective Tempered Glass
Low-iron, high-transparency glass reduces surface reflection—allowing more sunlight absorption and boosting daily output.
Aluminum Alloy Frame
Corrosion-resistant anodized aluminum frame—ensures long-term structural support and simplified mounting.
Wide Compatibility
Compatible with 12V/24V battery systems and inverters—perfect for RV, home, farm, and industrial use.



Everything you need is included with your product.
| Category | Specifications |
| Maximum Power (Pmax) | 400W |
| Maximum Power Voltage (Vmp) | 30.9V |
| Maximum Power Current (Imp) | 12.9A |
| Open Circuit Voltage (Voc) | 37.1V |
| Short Circuit Current (Isc) | 13.7A |
| Maximum System Voltage (Vmax) | 1500VDC |
| Temperature Range | -40°F ~ 185°F |
| Dimensions: | 67.9 × 44.6 × 1.2 in |
| Weight | 49.4 lb |
Is this panel compatible with 12V battery systems?
Yes. While it’s a 24V-rated panel, it can be used with 12V systems through an MPPT charge controller.
Can I mount this panel on my RV or van roof?
Yes. The panel’s durable frame and standard size make it suitable for RV, van, and marine roof mounting with proper brackets.
Does this come with mounting hardware?
No. Mounting brackets are not included and must be purchased separately.
Is it safe to use in extreme weather?
Yes. It’s certified to withstand wind loads of up to 2400 Pa and snow loads up to 5400 Pa, making it ideal for all climates.
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I was a DIY solar power wannabe... that is 'til I connected with Manny... The man's a prince! He not only knows his stuff; he walked me through all things electrical. To make sure I had all I needed... he gave me his cell phone # to text him anytime I got confused... nights and weekends included. The prices were very competitive... definitely go with Manny -- you won't go wrong!
Bruce D.
I am always hesitant to buy things at places I have never shopped... I want to give a shout out to Manny who with great patience and knowledge helped me get my orders... I felt valued as a customer and I will definitely be back in the future. I highly recommend them, they make you feel like family.
Jennene A.
I'm about to go off grid. I called Manny, he walked me through everything so I could truly understand what I needed and never tried to upsell me. He was honest and made a customer for life.
Ray B.
I would personally like to thank Manny... I purchased the inverter and decided I needed to return it... Manny was very understanding and went out of his way to help me return the product and not even have to pay for shipping return. He gives this company reputation, honor and quality customer service!
Roger V.
I have been talking with Manny the owner... He has not only helped me design a system but he's been assisting with the install and components. I am super pleased so far with the assistance.
Jeff S.
We added 2 more batteries to our current set up. Pleased with the customer service from Off-Grid Source! Will be back!
Jason
Very fast response times. Very professional. I highly recommend!
Ray W.
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