1 / 8Rich Solar MEGA 250 PRO | 250 Watt 24 Volt Solar Panel | Premium 24V Off-Grid Solar Panel for Campers, Tiny Homes, Cabins | 25-Year Output Warranty
- 250W continuous outputRated AC output for running tools, appliances and backup circuits.
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Rich Solar MEGA 250 PRO — 250 Watt 24V Solar Panel
The MEGA 250 PRO steps up to 24 volts, making it the higher-voltage sibling in Rich Solar's MEGA lineup. Built on the same N-Type TopCon cell platform with a 25.1% efficiency rating, it's engineered for larger off-grid systems — cabin installations, big RV and motorhome setups, marine applications, and DIY battery banks where 24V or 48V architecture reduces wiring complexity and increases system efficiency.
24V Architecture for Larger Systems
Operating at 36.9V Vmp and 44.7V Voc, the MEGA 250 PRO is purpose-built for 24V battery banks and 48V arrays — fewer panels needed, simpler wiring, and lower current draw through your cables and charge controller.
Extreme-Environment Durability
IP68-rated junction box, IP67 MC4 connectors, salt and ammonia resistance, UV stability, and thermal cycling validation make the PRO ready for demanding marine, rooftop, and year-round off-grid installs.
25-Year Linear Output Warranty
Guaranteed to retain more than 95% output at year 5, 90% at year 10, and 80% at year 25. Every panel ships with a 0~+5W positive power tolerance — at or above rated output, guaranteed.
Product Overview
The Rich Solar MEGA 250 PRO is a 250-watt, 24-volt monocrystalline solar panel designed for off-grid systems where higher voltage architecture translates to real-world efficiency gains. Sharing the same physical footprint as the standard MEGA 250 — 60.6 × 29.9 × 1.2 inches, 26.9 lbs — it's equally at home on RV rooftops, cabin installations, boat decks, trailers, and ground-mount frames, but optimized for systems where 24V or 48V battery banks are involved.
The core difference between the MEGA 250 and MEGA 250 PRO is voltage. The PRO operates at a maximum power voltage of 36.9V (Vmp) versus the standard model's 12V system design. This higher voltage means less current is drawn through your wiring and charge controller at the same power level — reducing resistive losses over long cable runs and allowing a single panel to support a 24V system or two panels in series for 48V. For larger off-grid builds, this simplifies the overall system design.
Both panels share the same Grade A+ N-Type TopCon cells, 16-busbar half-cut layout, AR-coated tempered glass, and 30+ quality-control checkpoints — including PID resistance testing and 100% double EL imaging inspection for micro-crack detection before shipment.
Engineered for Extreme Durability
- IP68 Weatherproof Junction Box: Fully sealed against moisture, dust, and submersion — reliable in coastal, marine, and high-humidity environments.
- IP67 MC4 Connectors: Waterproof-rated plug connections compatible with standard MC4 solar wiring.
- Salt, Ammonia & Sand Resistant: Validated for harsh environments including coastal marine, agricultural, and desert installations.
- UV & Thermal Cycling Tested: Over 30 in-house quality tests including UV exposure, high-humidity, and thermal cycling for long-term outdoor stability.
- 100% Double EL Inspected: Every panel is imaged using electroluminescence diagnostics to detect micro-cracks before leaving the factory.
Powerful Output in Every Condition
- N-Type TopCon + 16-Busbar Cells: Higher efficiency and lower long-term degradation compared to standard PERC monocrystalline panels, with better real-world output under diffuse and low-angle light.
- 3.2mm AR-Coated Tempered Glass: Anti-reflective coating increases light absorption across the day; tempered construction resists impact and weathering.
- Low Temperature Coefficient (-0.35%/°C): Stable power output even on hot rooftops — less efficiency loss on high-temperature summer days than standard cells.
- Positive Power Tolerance (0~+5W): Every panel is tested at or above the 250W nameplate rating at standard test conditions.
- PID-Resistant: Prevents potential-induced degradation that can silently reduce output in high-voltage string installations.
Simplified High-Power System Design
- Fewer Panels Needed: A single MEGA 250 PRO supports a 24V system. Wire two in series for a 48V array — reducing total panel count for high-wattage systems.
- Simpler Wiring: Higher voltage means lower current at the same power level, reducing cable sizing requirements and connection complexity across your array.
- PWM & MPPT Compatible: Works with both charge controller types, and compatible with on-grid and off-grid inverters for versatile system integration.
- Ideal for Large Arrays: The preferred choice when building 24V/48V off-grid homes, large cabin systems, and high-capacity RV or motorhome installs.
Fast, Flexible Installation
- Pre-Drilled Mounting Holes: Multiple hole positions for flexible roof, ground-mount, or rack installation without additional drilling.
- Plug-and-Play MC4 Connectors: 4ft pre-attached cables with standard MC4 connectors for fast, tool-free connection to your array or charge controller.
- ≈ 35-Inch On-Panel Cable Length: Sufficient lead length for most rooftop cable management configurations.
- Available in Silver or Onyx (Black) Frame: Choose the finish that suits your vehicle, rooftop, or ground-mount aesthetic.
- 1500V Max System Voltage: Supports larger series string configurations in commercial or high-capacity residential arrays.
Best Uses
- 24V and 48V off-grid battery bank systems
- Large RV, motorhome, and Class A rooftop solar arrays
- Cabin, tiny home, and off-grid home power systems
- Marine and boat solar battery charging
- Van and camper builds with 24V electrical systems
- DIY high-wattage solar arrays and backup power systems
- Ground-mount and shed solar installs
Key Benefits
- 25.1% cell efficiency in the same compact 60.6 × 29.9 in footprint
- 36.9V Vmp / 44.7V Voc — ideal for 24V systems and 48V series strings
- N-Type TopCon cells for reduced long-term degradation
- Half-cut, 16-busbar design minimizes hot spots and resistive losses
- IP68 junction box and IP67 MC4 connectors for all-weather protection
- Salt, ammonia, sand, and UV resistance for harsh environments
- 25-year linear power output warranty
- 4ft pre-attached MC4 cables; available in silver or onyx frame
Where the MEGA 250 PRO Gets Installed
RVs
Motorhome
Marine
Cabin
DIY Solar
Off-Grid
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