portable car solar panel kit 300w 12v usb charging interface waterproof solar board with controllerfor for marine rv mobile

environmental protection and pollution- realizing the conversion of solar energy to electric energy. it has a wide range of applications and can be used in many places, such as automobiles and small household appliances. a solar panel is a device that directly or indirectly converts solar radiation into electrical energy by absorbing sunlight. compared with ordinary batteries and rechargeable batteries, solar panels are more energy-efficient and more environmentally friendly..syi