A solar panel connector is a device used to establish a secure and reliable electrical connection between solar panels. They also link solar panels and other components of a photovoltaic (PV) system, such as inverters, charge controllers, and batteries. In this article we will teach you. Though many electrical and mechanical components are used while installing solar panels, below is a list of the basic components. This. Connectors are an integral part of any renewable energy system, ensuring that all parts fit together and can transfer energy safely from the panels to other electrical components.