【Efficient Performance】Bypass Diodes Protect The Solar Cells From Overheating and Allow The Solar Panel To Continue Working During Accidental Shading By Bypassing The Underperforming Cells. 【Reliable Power Output】 200w Solar Panel (2pcs 400w) Can Provide An Average Of 800-1000 Watt-Hours (Wh) Or 66-82 Amp-Hours (Ah) Of Electricity Per Day (Depending On Sun Availability). 【Industry-Leading Technology】 200w 12v Monocrystalline Panel Is Made From High Purity Silicon Cells Coated with Advanced Encapsulation Material with Multi-Layered Sheet Laminations To Enhance Cell Performance and Provide Long-Lasting Durability. 【Built To Last】Corrosion-Resistant Aluminum Frame Provides Extended Outdoor Use That Ensures The Panel Can Last for Decades. The Ip65 Rated Junction Box Is Versatile Due To Its Ability To Withstand Dirt, Dust, Debris, and Low-Pressure Water Jets. 【Fast And Easy Installation】Pre-Drilled Holes On The Back Of The Panel Allow for Fast Mounting and Securing, Ideal for Off-Grid Applications Including Rvs, Rooftops, Cabins, Yachts, and More. They Are Directly Compatible with Ground Mounts, Z Brackets, Corner Brackets, Pole Mounts, and Tilt Mounts.