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| Warranty: | 25 Years |
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The 2026 Sunman Flexible Solar Panel 520W is a lightweight, ultra-thin half-cell monocrystalline PV module designed for RVs, boats, and off-grid applications.
Utilizing advanced half-cell technology, it delivers high conversion efficiency of up to 22% while maintaining excellent flexibility and durability. The module can be installed on curved or uneven surfaces without compromising performance.
As a direct manufacturer, we provide bulk supply, custom specifications, and global shipping, making us your reliable solar partner.
Key Features
High Power Output
Rated at 520W with half-cell design to reduce resistance loss and boost efficiency
High energy yield under diverse weather conditions
Lightweight & Ultra-Thin
Weighs only 5-6kg, thickness under 5mm
Perfect for RV roofs, boats, and portable off-grid systems
Easy and flexible installation
Flexible & Durable Materials
Waterproof, dustproof, and corrosion-resistant for long-term outdoor use
ETFE/backsheet material ensures reliable performance in harsh environments
Wide Applications
Ideal for RVs, boats, solar off-grid systems, and emergency power backup
Provides green energy with minimal dependence on the grid
Easy Installation & Compatibility
Bendable up to 30° without mounting brackets
Compatible with MPPT controllers and inverters for efficient system integration
| STC | SMF520J-12X12UW |
| Maximum Power ( Pmax ) | 520 |
| Maximum Power Voltage ( Vmp ) | 42.3 |
| Maximum Power Current ( Imp ) | 12.31 |
| Open-circuit Voltage ( Voc ) | 49.5 |
| Short-circuit Current ( Isc ) | 13.56 |
| Module Efficiency (%) | 19.3 |
| Operating Temperature | -40ºC to 85ºC |
| Maximum System Voltage | 1500V DC(IEC) |
| Maximum Series Fuse Rating | 25A |
| Application Class | Class A |
| Power Tolerance | 0/+5 W |
| Weight | 8.6KG |
| Size | 2246*1197*2mm |
| STC: Irradiance 1000W/m2,Cell temperature 25ºC,AM=1.5 |
Tolerances of Pmax,Voc and Isc are within ±5% |
Q1: Can this solar panel be installed on curved or uneven RV roofs?
A: Yes, the Sunman 520W flexible solar panel can bend up to 30° without affecting performance. Its lightweight and ultra-thin design allows seamless installation on curved, angled, or uneven surfaces, making it ideal for RVs, camper vans, and boat roofs.
Q2: Is this panel suitable for off-grid solar systems?
A: Absolutely. This panel is fully compatible with standard MPPT controllers and inverters, enabling efficient off-grid energy systems. It is perfect for remote cabins, boats, RVs, and emergency backup setups where grid access is limited or unavailable.
Q3: What is the lifespan and durability of the panel?
A: The Sunman 520W flexible solar panel is designed for a lifespan of 25 years or more. It features ETFE/backsheet protection, is waterproof, dustproof, and corrosion-resistant, ensuring reliable energy production even in harsh outdoor environments.
Q4: How much power can I expect under real conditions?
A: While the panel is rated at 520W under standard test conditions (STC), real-world output depends on sunlight, temperature, and installation angle. With optimal conditions, the panel delivers high efficiency with minimal power loss due to its half-cell design.
Q5: Can I order custom sizes or configurations for my project?
A: Yes, we provide flexible customization options. You can request specific voltages, sizes, or panel quantities to suit your RV, boat, or off-grid solar system. Bulk orders and OEM/ODM services are available for larger projects.
Q6: How easy is installation and maintenance?
A: Installation is simple-no heavy frames or mounting brackets are required for most curved or flat surfaces. Maintenance is minimal: just clean the panel surface periodically to remove dust or debris for optimal performance.
Q7: Is this solar panel certified for international markets?
A: Yes, our 520W flexible solar panel meets CE, TUV, and ISO 9001 international standards. It is tested for electrical safety, performance, and weather resistance, ensuring compliance and reliable operation worldwide.
Q8: Can this panel be used in marine or outdoor environments?
A: Definitely. The panel is corrosion-resistant and waterproof, making it suitable for marine applications, RVs, rooftops, and other harsh outdoor environments. Its flexible design also adapts well to curved or irregular surfaces.
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