LIPO Ready! These ignitions are rated for use with a 2 cell lipo, or a battery up to 8.4v without the use of a regulator. This RCEXL ignition system if for a single cylinder engine that uses the CM-6 mini plug. Included is the CDI unit, sensor, sensor mount, and plastic wire loom. It can be used on any sincle cylinder engine that uses the CM-6 mini plug.