Automotive Resources Inc manufactures and develops The SmartPlug. The SmartPlug is a self-contained ignition system that may be retrofitted to existing spark-ignition and compression-ignition engines. The SmartPlug consists of a prechamber containing a catalytic heating element. Cold starting requires up to 25 watts/igniter from an external power supply. The SmartPlug can be started with a 1.5 volt "D" cell all the way up to a 40 volt battery, depending upon application and design. Once the engine is warmed up under moderate load, the power supply is no longer necessary. The SmartPlug becomes self-sustaining while under load. This unique ability of the SmartPlug is due to its catalytic ignition source