efficiency 20W monocrystalline solar panel with included controller designed for reliable outdoor power. Key benefits Maximizes sunlight energy with a 20W monocrystalline silicon panel for efficient charging and consistent performance. Controller supports up to 300W to provide a stable energy source for a range of outdoor needs. Flexible panel design adapts to curved surfaces and portable setups, making installation and transport easier. Built from durable monocrystalline silicon for longlasting performance in outdoor conditions. Builtin overload guard protects against overcharging, overdischarging, and short circuits to keep batteries and equipment safe. Features and compatibility Power output: 20W solar panel. Cell type: monocrystalline silicon for higher efficiency and durability. Controller: included, supports up to 300W. Charging options: compatible with an 18V battery clip for direct connection; suitable for charging electric RV systems and 12V batteries. Safety: overload guard function prevents common battery and circuit faults. Practical applications RV and camping: keep house batteries topped up to run lights, fans, and small appliances while off grid. Marine and outdoor equipment: maintain 12V batteries on boats, ATVs, trailers, and other gear during storage or use. Emergency backup and roadside use: provide temporary charging for vehicle batteries or power small devices during breakdowns or remote work. Why choose this panel Clear, compatible charging options for 12V systems and electric RV setups. Durable monocrystalline construction for steady performance outdoors. Safety features to protect batteries and connected equipment. What is included 20W flexible monocrystalline solar panel and controller that supports up to 300W. Compatible with an 18V battery clip for direct charging of electric RVs and 12V batteries.