Callsun N-Type 16BB 550W Bifacial Solar Panel, 2×275 Watt Solar Panel for 12V/24V Battery Systems, 25.6% High-Efficiency, Dual-Module Parallel Anti-Shade Design, for RV Van Marine Home Roof Off-Grid — Open-Box, 5% Off

Industry-Leading 25.6% Efficiency: Powered by advanced N-Type 16BB cell technology, this high-performance panel achieves optimal energy conversion—significantly outperforming standard models to maximize total daily power output for your solar system.

Superior Shade Tolerance: Featuring a Dual-Module Parallel Anti-Shade Design, this panel keeps producing power even when partially obstructed by structural shadows or nearby foliage—ensuring your solar system operates at peak efficiency.

Up to 30% Dual-Sided Yield: Capture additional power from rear-side reflection off snow, concrete, or light roofs. This bifacial panel maximizes energy production in a compact footprint—delivering peak output for fixed rooftop and ground-mounted arrays.

Reliable Power Even in Extreme Heat: With a low temperature coefficient of -0.3%/K, this 12V 550W panel minimizes power degradation in hot conditions, guaranteeing continuous, peak-efficiency performance when heat is at its highest.

Compact Power & Easy DIY Setup: Packing 275W into a manageable frame, this panel delivers high power output without the heavy bulk of 400W+ models. Easily carried and mounted by one person on rooftops, cabins, or ground setups.

Built to Last for Decades: Built with ultra-strong, high-transmittance tempered glass, a corrosion-resistant aluminum frame, and an IP68 junction box, the Callsun 550W panel withstands harsh weather to deliver long-term, dependable power for residential, cabin, or off-grid systems.

Long-Term Reliability - Callsun 550W solar panel with low degradation (≤1% in the first year, ≤0.4% annually) , plus a 10-year output & material and workmanship commitment, 30-year 87.4% output for lasting performance.

The Callsun 275W bifacial solar panel features an innovative dual-module parallel design with two independent sections, allowing the other section to generate power normally even if one is shaded. Equipped with advanced N-type solar cells and 16BB busbar technology, it achieves a high conversion efficiency of 25.6%, delivering more power in a smaller footprint. Every panel comes with 10 years of dedicated technical support and a 25-year performance warranty, guaranteeing 87.4% of its original output after 25 years.