300W Semi-Flexible Solar Panel with High-Efficiency Monocrystalline PERC Cells – Flexible Power for Demanding Off-Grid Systems
This high-output 300W semi-flexible solar panel is built to power larger mobile and off-grid setups with reliability and efficiency. Engineered with Monocrystalline PERC cells rated at >23% efficiency, it provides exceptional power generation in a slim, bendable, and rugged format—ideal for RVs, boats, off-grid cabins, and curved installations.
Constructed with high-strength polymer and multi-layer EVA protection, this panel is designed to withstand physical stress, environmental exposure, and heavy-duty use while remaining easy to handle and install.
Product Features:
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⚡ High-efficiency Monocrystalline PERC cells – Converts >23% of sunlight into usable energy for maximum output in a compact footprint
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🔬 Advanced PERC cell technology – Optimized for low light, angled sun, and warm conditions
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🛡️ Composite polymer structure – Resists cracking, trampling, and bending while maintaining flexibility
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📏 Full panel dimensions: 1755 × 898 × 2mm
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🪶 Portable for its size – At just 5.3kg, lighter than rigid glass panels of similar power output
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🌊 IP68 waterproof rating – Offers top-level resistance to water and dust for marine and outdoor use
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🔌 Plug-and-play connectivity – Comes with 2 × 90cm cables (4.0mm²) and pre-fitted MC4 connectors
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⚙️ Flexible installation – Mount with bonding or mechanical fasteners on curved or flat surfaces
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✅ Positive power tolerance – Guaranteed output of 300–303W, ensuring consistent performance
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🛠️ Covered by a 2-year warranty – Confidence for off-grid and mobile energy systems
Electrical Specifications
| Max Power (Pmax) | 300W |
| Max Power Voltage (Vmp) | 27.5V |
| Max Power Current (Imp) | 10.9A |
| Open Circuit Voltage (Voc) | 33V |
| Short Circuit Current (Isc) | 11.7A |
| Maximum System Voltage | 600V |
| Series Fuse Rating | 10A |
| Cell Efficiency | >23% |
| Number of Cells in Series | 50 |
| Cell Dimensions | 166 × 166 mm |
| Max Power Tolerance | 0 ~ +3W |
Temperature Coefficients
| Power | -0.38% / °C |
| Voltage | -60.08mV / °C |
| Current | 2.2mA / °C |
Mechanical Specifications
| Weight | 5.3 kg |
| Dimensions | 1755 × 898 × 2 mm |
| Cable | 90 cm, 2x 4.0mm² with MC4 connectors |
Panel Construction
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Multi-layer structure with reinforced polymer top layer
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EVA encapsulation for shock absorption and long-term reliability
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High-efficiency Monocrystalline PERC cells
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Durable TPT backsheet
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Integrated waterproof junction box and factory-installed MC4 connectors
Ideal For:
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Expedition vehicles and large motorhomes
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Boats and yachts (including saltwater use)
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Off-grid homes, cabins, and mobile systems
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Lightweight and curved installations
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Solar backup power and mobile energy solutions
Delivering robust 300W output in a slim, flexible, and marine-ready format, this panel offers the power and resilience to support energy-intensive systems in the harshest environments.