Marcum Lithium Shuttle Power Adapter Cable Marine Electronic Accessory - The MarCum Lithium Shuttle Power Adapter offers the angler the ability to quickly convert their existing sonar system to the MarCum Lithium Shuttle. Simply attach the adapter cable to the output power cable on the MarCum Lithium Shuttle, and then attach the sonar power terminal cable from your existing sonar system to the MarCum Lithium Shuttle Power Adapter . Designed to be used with systems with operating ranges between 9 to 12.6 volts. Male Spade end terminal connections for quick attachment to existing power systems. Only compatible with the Marcum Lithium Shuttle.