Rich Solar MEGA 250 | 250 Watt Solar Panel 1 / 9
RICH SOLAR

Rich Solar MEGA 250 | 250 Watt Solar Panel - MEGA 250 (Silver) Rich Solar MEGA 250 | 250 Watt Solar Panel

SKU: RS-M250

Brand RICH SOLAR In Stock
$299.99 In Stock
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Rich Solar MEGA 250
MEGA 250 (Silver)
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Rich Solar MEGA 250 | 250 Watt Solar Panel

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1
Rich Solar • 12V Monocrystalline

Rich Solar MEGA 250 — 250 Watt 12V Solar Panel

The MEGA 250 is a 250-watt, 12-volt monocrystalline solar panel built for serious off-grid use. Powered by N-Type TopCon cell technology with a 25.1% efficiency rating, it delivers more power in a footprint roughly 10% smaller than a standard 250W panel — making it an ideal fit for RV rooftops, van builds, boat decks, cabins, and DIY battery charging systems.

250W / 12V 25.1% Cell Efficiency N-Type TopCon Technology 25-Year Output Warranty UL Certified IP68 Junction Box
Rich Solar MEGA 250 250W 12V solar panel front view
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25.1% Efficiency, Compact Size

N-Type TopCon cells with a 16-busbar, half-cut design push efficiency to 25.1% while keeping the panel 10% smaller than comparable 250W models — a serious advantage on tight RV or van roofs.

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Built for All-Weather Durability

IP68-rated junction box, IP67 MC4 connectors, impact resistance up to 35mm hail, and load ratings of 2400 Pa wind / 5400 Pa snow make the MEGA 250 ready for demanding outdoor environments.

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25-Year Output Warranty

Backed by a 25-year power output warranty. Panels retain more than 95% output at year 5, 90% at year 10, and 80% at year 25 — long-term confidence in every installation.

Product Overview

The Rich Solar MEGA 250 is engineered for 12-volt off-grid solar systems that demand reliable, high-output power generation in limited space. At 60.6 × 29.9 × 1.2 inches and 26.9 lbs, it's a high-density panel that installs cleanly on RV roofs, van builds, trailer tops, boat decks, cabin rooftops, and ground-mount frames.

Each panel uses Grade A+ N-Type TopCon monocrystalline cells arranged in a 64-cell module with 16 busbars and a half-cut layout. This combination reduces resistive power loss, limits the impact of shading through bypass diodes, and improves low-light power generation compared to traditional PERC cells. Anti-reflective coated glass further increases energy capture across varying light conditions throughout the day.

Every MEGA 250 undergoes 30+ mechanical and electrical quality checks before leaving the factory, including PID resistance testing and EL diagnostics. The result is a panel with a 0~+5W positive power tolerance — meaning you're always getting at or above rated output at STC.

Rich Solar MEGA 250 outdoor weatherproof solar panel

Tough Panels for Tougher Environments

  • IP68 Weatherproof Junction Box: Fully sealed against moisture and dust for long-term reliability in exposed outdoor installations.
  • IP67 MC4 Connectors: Rated for submersion and high-humidity environments — compatible with standard MC4 solar wiring.
  • Wind & Snow Load Certified: Engineered to withstand 2400 Pa wind loads and 5400 Pa snow loads.
  • Hail Resistant: Passes impact testing at 35mm hail diameter at 97 km/h — built to last through years of outdoor exposure.
  • Corrosion-Resistant Aluminum Frame: 1.3mm reinforced frame for structural rigidity and long-term weather resistance.
Rich Solar MEGA 250 monocrystalline cell performance

Superior Performance and Reliability

  • Grade A+ Cells: Premium-binned monocrystalline cells selected for consistent efficiency, stability, and long operational life.
  • 30+ Quality Checks: Every panel is tested mechanically and electrically before shipment, including PID resistance and EL imaging diagnostics.
  • Low-Light Power Generation: N-Type TopCon cells with 16 busbars and AR-coated glass capture more energy in diffuse, overcast, and early/late-day light conditions.
  • Positive Power Tolerance: 0~+5W tolerance ensures output at or above the 250W nameplate rating at standard test conditions.
Rich Solar MEGA 250 compact high efficiency solar panel

More Power. Less Roof Space.

  • 10% More Compact: Smaller footprint than standard 10BB 250W panels, making it ideal for space-constrained RV, van, and trailer rooftops.
  • N-Type TopCon Technology: Lower degradation rate and longer usable lifespan than standard PERC monocrystalline panels.
  • Half-Cut + 16-Busbar Design: Reduces internal resistance and hot spots, maximizing overall power output from each cell.
  • Shade-Tolerant: Bypass diodes maintain stable array output under partial shading — critical for rooftop installations near vents, racks, or antennas.
Rich Solar MEGA 250 MC4 connectors easy installation

Fast, Flexible Installation

  • Pre-Drilled Mounting Holes: Multiple hole positions give you flexible mounting options without drilling new hardware locations.
  • Plug-and-Play MC4 Connectors: 3ft pre-attached cables with standard MC4 connectors for fast, tool-free connection to other panels or your charge controller.
  • ≈ 35-Inch On-Panel Cable Length: Enough lead length for most rooftop cable management and junction box routing.
  • Available in Silver or Onyx (Black) Frame: Choose the frame finish that matches your vehicle or installation aesthetic.
Rich Solar MEGA 250 solar panel side profile Rich Solar MEGA 250 solar panel junction box detail Rich Solar MEGA 250 solar panel corner frame detail Rich Solar MEGA 250 solar panel cell close up Rich Solar MEGA 250 solar panel MC4 connector detail Rich Solar MEGA 250 solar panel installed on RV roof

Best Uses

  • RV and motorhome rooftop solar charging systems
  • Van builds, Sprinters, camper vans, and trailer tops
  • Boat and marine solar battery charging
  • Off-grid cabin and tiny house power systems
  • DIY 12V battery bank solar charging setups
  • Backup power systems and shed solar installs
  • Ground-mount arrays and portable solar rigs

Key Benefits

  • 25.1% cell efficiency in a compact 60.6 × 29.9 in footprint
  • N-Type TopCon cells for lower long-term degradation
  • Half-cut, 16-busbar design reduces hot spots and power loss
  • IP68 junction box and IP67 MC4 connectors for all-weather use
  • Rated for 2400 Pa wind and 5400 Pa snow loads
  • 25-year power output warranty with linear degradation schedule
  • Plug-and-play MC4 with 3ft pre-attached cables
  • Available in silver or all-black onyx frame
Compatibility note: Always pair with an appropriately sized MPPT or PWM charge controller sized for your array's Voc and Isc. The MEGA 250 has a 22.8V Voc and 13.7A Isc — verify your charge controller's input limits before wiring.

Where the MEGA 250 Gets Installed

MEGA 250 solar panel on RV roof RVs
MEGA 250 solar panel on boat marine install Marine
MEGA 250 solar panel on motorhome Motorhome
MEGA 250 solar panel on off-grid cabin Cabin
MEGA 250 DIY solar power install DIY Solar
MEGA 250 off-grid power system Off-Grid

Compare panel options

Our solar panel selection guide explains how to compare panel ratings and installation needs; check this product’s electrical ratings before pairing it with other equipment.

Compare before you choose

Compare wattage per panel, physical dimensions, Voc, current and connector type before planning an array.

See the Rich Solar MEGA 200 | 200 Watt Solar Panel | Premier 12V Off-Grid Solar Panel for RVs Cabins, Boats | 25-Year Output Warranty for another RICH SOLAR solar panel option.

Rich Solar MEGA 250 | 250 Watt Solar Panel - MEGA 250 (Silver)
Package Includes
1x Rich Solar MEGA 250 | 250 Watt Solar Panel - MEGA 250 (Silver)
Includes the selected item based on the current package option.
Specifications
Selected variant SKU RS-M250
Maximum Power (Pmax) 250W
Maximum Power Voltage (Vmp) 18.9V
Maximum Power Current (Imp) 13.2A
Open Circuit Voltage (Voc) 22.8V
Short Circuit Current (Isc) 13.7A
Maximum System Voltage (Vmax) 1500VDC
Temperature Range -40°F~ +185°F
Weight 26.9 lb
Dimensions 60.6 × 29.9 × 1.2 in
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Product Document
Supporting documentation for this product.
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Specification Sheet
Technical specifications, dimensions, electrical ratings, and certifications.
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📄
Specification Sheet
Technical specifications, dimensions, electrical ratings, and certifications.
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📄
Specification Sheet
Technical specifications, dimensions, electrical ratings, and certifications.
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Frequently Asked Questions

Clear answers to common questions about this product, setup, compatibility, and use.

What are the installed dimensions and panel weight of the MEGA 250? The published panel dimensions are 60.6 x 29.9 x 1.2 in, and the listed weight is 26.9 lb. Measure the complete mounting envelope - not only the module face - and leave room for clamps or brackets, cable routing, roof hardware, ventilation, and service access. On a mobile installation, confirm the structure and rack can handle both the panel weight and travel loads. Can my existing solar controller safely accept the MEGA 250? At maximum power, the MEGA 250 is listed at 18.9V and 13.2A; its open-circuit voltage is 22.8V and short-circuit current is 13.7A. Use Vmp and Imp to estimate normal array operation, but use the applicable Voc and Isc calculations when checking controller limits, series strings, parallel current, conductor size, and protection. What does the nominal-voltage description actually mean on the MEGA 250? No solar module should be approved for direct battery charging from a nominal-voltage label alone. The MEGA 250's published operating values are 18.9V at maximum power and 22.8V open circuit. A compatible charge controller must accept the final array voltage and current and provide the charging profile required by the battery bank. What does the MEGA 250's 250W nameplate rating mean in actual use? 250W is the module's published nameplate power under standardized test conditions, not a constant field output. Cell temperature, sun angle, shade, cloud cover, dirt, wiring loss, controller efficiency, and battery state all affect measured production. Estimate the purchase from expected daily energy at the installation site, not by multiplying 250W by every daylight hour. What leads and connectors are already attached to the MEGA 250? RICH SOLAR lists the following factory connection details: MC4 connectors with 4 ft pre-attached cables for quick and easy installation. Panel Leads (Pair): 12 AWG, 4 ft each. Confirm polarity, lead length, conductor size, and the distance to the combiner or controller before ordering extensions. Factory leads do not automatically include every adapter, branch connector, roof entry, fuse, disconnect, or extension cable required by the final layout.