Rich Solar Mega 250: 250W Monocrystalline Panel
Reliable Power for Your Off-Grid Build
- FREE System Design Consultation -- Our engineers size your system for your actual consumption
- FREE Shipping -- Ships free to your door, no minimum order
$239.99
Out of stock
In the box
- 250W monocrystalline solar panel
- Panel leads (pair), 3 ft each
- IP68 rated waterproof junction box
- IP67 rated waterproof solar connectors
Reliable Power for Your Off-Grid Build
The Rich Solar MEGA 250 delivers 250 watts of monocrystalline output through a 16-busbar cell configuration that performs in low-light conditions — cloudy mornings, overcast afternoons, and early evenings. The lightweight anodized aluminum frame and anti-reflective tempered glass make this panel built-to-survive harsh environments while keeping installation manageable. Whether you're wiring up a cabin, outfitting a van, or expanding a grid-independent homestead array, the MEGA 250 gives you honest, field-tested wattage with IP68-rated waterproofing and a 25-year output warranty.
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16-Busbar Cells
AR Tempered Glass
IP68 Waterproof
25-Year Warranty
250W
Rated Output
26.9 lbs
Panel Weight
18.9V
Vmp Voltage
Rated Watts You Can Actually Use
Most panels advertise peak output that you never see in real conditions especially on overcast mornings or winter afternoons. The Mega 250 uses a 16-busbar cell configuration that maintains generation in low-light scenarios where conventional panels flatline. At Off Grid Vault, we only carry panels that deliver on their datasheet specs. This panel is rated 250W at Vmp 18.9V — a real specification, not a marketing exaggeration. When you are building a system to run your cabin or keep your fridge on during a multi-day outage, underperforming panels are not an option. Every watt matters.
Engineered for Harsh Environments
The -40°F to +185°F temperature range means this panel handles desert heat, mountain freezes, and everything between. Anti-reflective coated tempered glass maximizes energy transmission while the anodized aluminum frame resists corrosion in high-humidity and salt-air environments. At 26.9 lbs across 60.6 x 29.9 x 1.2 inches, it is manageable for one-person installation on RV roofs, van builds, and cabin arrays. The IP68 rated junction box and IP67 rated connectors keep moisture out. Bypass diodes built into the junction box protect individual cells from shading losses — so a shadow on one corner does not kill your entire string output. This is an off-grid proven panel built to stay mounted for years.
Mount and Connect Without Guesswork
Pre-drilled holes are compatible with ground mounts, Z brackets, pole mounts, and tilt mounts — no adapter plates, no custom fabrication. The approximately 35-inch on-panel cable leads use industry standard quick-connect solar connectors, so you can wire panels in series or parallel without special adapters or crimping tools. The plug-and-play junction box means your array goes from flat on the ground to generating power in minutes, not hours. Whether you are stringing four of these for a cabin roof or mounting a single panel on your van, the hardware compatibility removes the friction that turns a weekend project into a multi-week headache. This panel works with both on-grid and off-grid inverters.
Compatibility Check
Verify these points before adding this panel to your off-grid system.
- Your charge controller accepts up to 22.8V open circuit voltage
- Mounting surface accommodates a 60.6" x 29.9" footprint
- System inverter works with 12V nominal panel input
Where This Panel Works
Built for permanent and semi-permanent off-grid installations that demand consistent daily output.
Van & RV Roofs
Remote Cabins
Marine & Boats
Homestead Arrays
Full specifications
At a glance
- Dimensions
- 60.6 x 29.9 x 1.2 in
- Power
- 250W
- Surface
- Tempered Glass, Aluminum, Monocrystalline Silicon
- Warranty
- 25-year output warranty
Full specifications12 data points across 4 categories
Dimensions
| Dimensions | 60.6 x 29.9 x 1.2 in |
|---|---|
| Weight | 26.9 lbs |
| On Panel Cable Length | ~35 in |
Power & Performance
| 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) | 1500 VDC |
| Temperature Range | -40 ~ +185℉ |
Materials
| Material | Tempered Glass, Aluminum, Monocrystalline Silicon |
|---|
Compliance & Warranty
| Output Warranty | 25-year output warranty |
|---|
The Off Grid Vault Promise
Every panel we carry is vetted for real-world performance. If it doesn't meet our standards, it doesn't make the cut.
Free ShippingShips free to your door — no minimums, no thresholds, no fine print.
30-Day Performance GuaranteeUninstalled, in original packaging. If it doesn't perform as specified, we make it right.
Free System Design ConsultationOur engineers size your system for your actual consumption — no guesswork, no incompatible components.
Frequently Asked Questions
Output depends on your location, sun hours, and system configuration. For a small cabin running LED lights, a phone charger, and a fan, a single panel may cover your needs. For running a refrigerator, well pump, and appliances, you would typically string multiple panels in series or parallel. Contact us for a free system design consultation — tell us your daily kWh consumption and we will spec the exact array size for your setup.
Yes. The Mega 250 uses industry standard quick-connect solar connectors and is compatible with both on-grid and off-grid inverters. You can wire multiple panels in series to increase voltage for longer cable runs, or in parallel to increase current for lower-voltage charge controllers. The maximum system voltage is rated at 1500 VDC. Keep in mind that series and parallel configurations affect your charge controller and inverter requirements — if you are unsure about the right configuration for your system, our free system design consultation covers exact wiring plans.
The Rich Solar Mega 250 includes a 25-year output warranty as stated by the manufacturer. This covers long-term performance degradation — the panel is built to maintain generation over decades, not seasons. Off Grid Vault is an authorized dealer, so if you ever need to file a warranty claim, it goes through us — not through a ticket queue with no accountability. Our 30-day performance guarantee also applies: if the panel does not perform as specified and is uninstalled in original packaging, we make it right.
A marketplace listing is a box with no system context. You get a panel, but no guidance on whether it fits your charge controller voltage window, your inverter input, or your roof layout. At Off Grid Vault, every product we carry is vetted for real-world performance. We offer free system design consultation to make sure this panel — or a multi-panel array — is correctly specced for your actual setup. If something does not perform as specified, you have a 30-day guarantee and an authorized dealer to call, not an anonymous seller.
A portable power station is a self-contained battery with a fixed capacity — when it is drained, it is done until you can recharge it. The Mega 250 is a generation source: as long as the sun is up, it produces power. For permanent off-grid setups, cabins, and RVs where you need continuous energy day after day, solar panels paired with a battery bank provide indefinite runtime. Portable stations have their place for weekend camping, but they are not a substitute for a properly sized solar array when you need reliable, repeatable power.
This is a solar panel, not a battery — it uses monocrystalline silicon cells, not a lithium chemistry. The 16-busbar configuration is a cell architecture choice that improves efficiency and low-light performance. If you are asking about battery chemistry for your system, LiFePO4 is the standard for off-grid storage due to its depth of discharge, cycle life, and thermal stability. We carry LiFePO4 battery banks from brands like EG4, Renon Power, and others — and our system design consultation can match the right battery bank to this panel and your inverter.
The Off Grid Vault Promise
Every panel we carry is vetted for real-world performance. If it doesn't meet our standards, it doesn't make the cut.
Free Shipping
Ships free to your door — no minimums, no thresholds, no fine print.
30-Day Performance Guarantee
Uninstalled, in original packaging. If it doesn't perform as specified, we make it right.
Free System Design Consultation
Our engineers size your system for your actual consumption — no guesswork, no incompatible components.
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rich solar is a trusted manufacturer of premium rigid solar panels. OffGridVault is an authorized dealer offering the full rich solar lineup with free delivery, price match guarantee, and expert support.
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