A photovoltaic system's components are connected via solar wires, which come in a variety of types. If you use the wrong solar wire, the electrical units might not be powered up or the battery bank won't fully recharge. Kuka Special Cable Co., Ltd. is located in Shanghai, China. We specialize in photovoltaic cables, lawn mower cables, floating cables, etc. More information: https://kukacable.com/products/1021.html