Bifacial 18V 200W 400W Solar Panel N-type IP68 RV Home Off-Grid Battery

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18V output Voltage【Next generation】 Unlike 12V solar panels, you only need a single one of our 18V panels to effortlessly charge your 12V battery through a controller--a key advantage over standard 12V panels.Our 18V PV can also directly charge your battery in emergency situations（For emergencies only. Do not use this way under normal circumstances） Full-Welding【Next generation】 Minimizes hotspots for peace of mind and delivers reliable performance for over 30 years. High-quality Pure Copper Wire【New Upgrade】

Built for the heat.Our pure copper wiring stays cooler and delivers stronger current in summer than copper-clad aluminum cables.

Superior Quality and Refined Craftsmanship

Our solar panels are built to a higher standard of quality with more precise manufacturing and finishing.

Enhanced Protection

The wiring features a unique two-layer protection system (an outer UV-resistant layer and an inner insulation layer).

Q&A What does off-grid and on-grid mean ? Off-grid systems operate independently with battery storage for complete energy freedom, while on-grid systems connect to the utility, allowing you to save with net metering while keeping the grid as a reliable backup.   Why is my solar panel under producing ? Solar panel may be underproducing due to temporary factors like shading or weather, or due to issues like dirt, poor angle,regular cleaning and system checks can typically restore performance.   How should I connect solar panels in my electrical circuit (series vs parallel)? Choose series wiring to increase voltage for your inverter's needs, or parallel wiring to minimize losses from shading, but always match your final configuration to your inverter's specific voltage and current input requirements.   What is the meaning of 12V in the product title?Why is this value different from the voltage of the solar panel? When you open the product page, you will see a title like "xxx Watt 12V Solar Panel".The "18V" in the product title indicates that this solar panel is suited for a 18-volt system. Its actual operating voltage (VMP) is higher,which is necessary for efficient charging.