5W Mini Solar Panel With Portable Cooling Fan Photovoltaic Solar Panel Set

Harness photovoltaic physics with this 5W mini solar panel and portable cooling fan set. Solar cells convert photons directly into electrical current via the photoelectric effect — one of the foundational discoveries of quantum mechanics. This complete solar energy demonstrator set makes photovoltaic principles tangible, showing how sunlight drives electrical loads in a self-contained renewable energy experiment.