1 / 9
Rich Solar MEGA 250 | 250 Watt Solar Panel | Premier 12V Off-Grid Solar Panel for RVs, Vans, Boats | 25-Year Output Warranty - MEGA 250 (Silver)
Frequently Bought Together
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.
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.
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.
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.
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.
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.
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.
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.
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
Where the MEGA 250 Gets Installed
RVs
Marine
Motorhome
Cabin
DIY Solar
Off-Grid
| Specifications | |
| Model 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 |
Frequently Asked Questions
Clear answers to common questions about this product, setup, compatibility, and use.
