The SP90-L 90 W solar panel is a photovoltaic power source capable of recharging batteries. It is used in systems that require high-power solar panels. The SP90 allows unattended operation of systems in remote locations, far from ac electrical sources. This solar panel needs to be used with either a 18529 Morningstar SunSaver regulator or a CH200 Smart Charge Controller. In the image, the SP90-L is shown with a 31107 Extended Mounting Kit.