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Competitive Price Fast Charging Cheap Bifacial Solar Panel Longi Half Cell PV Module 555W 550W 545W 540W 535W. Lowest LCOE Solution: Optimized for ultra-large power plants to minimize long-term energy costs. High Reliability Technology: Smart soldering reduces cell tensile stress by 20% for enhanced durability. Strong Bifacial Design: Double-glass with frame withstands 5400Pa static load, avoiding shading loss. Inverter Compatibility: Operating current of ~13A fully compatible with advanced inverters. 25-Year Warranty: Comprehensive 25-year warranty coverage for peace of mind. Customizable Power: Power output customizable to 540W with black color options. Certified Quality: ISO and CE certified monocrystalline silicon modules for safety.