Renogy Solar Panels 640 Watts 12V/24V 2PCS 320W Bifacial Panel Monocrystalline On/Off Grid Rigid Over 400 Watt 30% Higher Efficiency Durable for Homes Roof RV Boat Camping Black

【Bifacial Solar Panel】 Transparent mesh backsheet material and double-sided cells are used to realize double-sided power generation of solar panels. The solar panel back can provide an additional 5-30% of nominal power generation, bringing you more power generation benefits! 【Built to Last】 Corrosion-resistant aluminum frame provides extended outdoor use that ensures the panel can last for decades. Sturdy construction, designed to withstand wind loads of 2400Pa, and snow loads of 5400Pa. The IP68 rated junction box is versatile due to its ability to withstand dirt, dust, debris, and low-pressure water jets. 【18BB for Higher Conversion Efficiency & Longer Lifespan】 Renogy's new high-efficiency module series utilizes advanced 18BB cell technology, which effectively improves the module's photoelectric conversion efficiency; at the same time, it reduces the impact of hot spots and hidden cracks, resulting in a longer service life and more efficient module performance. 【Enhanced Performance in High Temperatures】 The solar panels are characterized by a low temperature coefficient, which means that Renogy's new high-efficiency modules have a much lower power loss than ordinary modules in high-temperature environments, giving them a much better product performance. This enables customers to generate more power even in the summer months or in extremely hot areas. 【Positive Power Tolerance, More Reliable Energy Output】 Our solar panels feature a 0 to +15W positive power tolerance, ensuring that the actual output of each module meets or exceeds its rated power. Compared to conventional panels with zero or negative tolerance, this enables higher real-world energy generation under the same installed capacity, effectively improving overall return on investment. With stable and reliable performance, every watt you invest delivers greater value. 【10-Year Warranty】 This solar panel comes with an excellent 10-year materials and workmanship warranty and a 25-year 80% output warranty., Weight: 36.817197754 pounds, Manufacturer: Renogy