A DC connector (or DC plug, for one common type of connector) is an electrical connector for supplying direct current (DC) power.
Compared to domestic AC power plugs and sockets, DC connectors have many more standard types that are not interchangeable. The dimensions and arrangement of DC connectors can be chosen to prevent accidental interconnection of incompatible sources and loads. Types vary from small coaxial connectors used to power portable electronic devices from AC adapters, to connectors used for automotive accessories and for battery packs in portable equipment.
Read more about DC Connector: Cylindrical Connectors, Snap and Lock DC Power Connectors, Molex Connector, IEC 60906-3:1994, Tamiya Connectors, Deans Connectors, JST RCY Connector, Inverter Tabs/lugs, Airline In-seat Power Supply System, Anderson Powerpole Connectors, SAE Connector, Cigar Lighter Sockets and Plugs, ISO 4165 Connector, XLR Connectors Used For Power, Other DC Connectors