The Velleman SOL4N is a polycrystalline solar panel designed for hobby and educational use. As a 2V craft solar module, it is perfect for didactic projects and small-scale photovoltaic applications. The panel's compact design makes it ideal for constructing mini solar-powered devices. https://elecena.pl/product/28691818/velleman-sol4n-solar-panel-2v-polycrystalline-open-cable-1piece 2025-05-14 https://elecena.pl/product/28691818/velleman-sol4n-solar-panel-2v-polycrystalline-open-cable-1piece 2025-07-29