High Solar Energy Conversion: Made from highly efficient monocrystalline cells, the 400W rigid solar panel has an excellent efficiency rating of 23%, allowing you to charge faster than using similar-sized panels. Combine this panel as part of your existing PV system or Power Kits setup, and allow the integrated MPPT algorithm to optimize your solar input. Waterproof & Durable: The 400W rigid solar panel is designed for the outdoors. With an IP68 waterproof rating and a robust anti-corrosive aluminum frame, the panel can withstand a wind speed of up to 130mph and a significant snow load of up to 113lb and continue to capture solar energy for years to come. Water and dust resistance were tested under controlled laboratory conditions with a rating of IP68 under IEC standard 60529 (maximum water depth of 1 meter for up to 72 hours.) Well-mounted solar panels can withstand a dynamic 2400pa wind pressure load (130mph wind speed) and a static 5400pa snow load (113lb per sq foot of snow). Off-grid & On-grid Solution: This high-wattage panel works for both on-grid and off-grid solar-powered setups, storing energy for outages, reducing power bills, or powering an off-grid home. Universally Compatible: EcoFlow solar panels use an all-inclusive solar connector, so you can even use them with your existing 48V power system. The 400W solar panel includes a 300mm charging cable that gives you plenty of space to mount multiple panels, maximizing solar input. Features: Fast Charging: With a high conversion efficiency rate of up to 23%, the 400W panel charges your LFP batteries faster than similar-sized solar panels. Weatherproof & Durable: The rigid panel balances design with robust materials allowing the panel to weather any storm while offering the same excellent performance and aesthetics for years. Off & On-grid Solution: This high-wattage panel works for both on-grid and off-grid solar-powered setups, storing energy for outages, reducing power bills, or powering an off-grid hom