The number of igniters that can be used on a single cue depends on the type of igniter, the length of wire, and the wiring technique used to connect the igniters to the module.
Seen below is a simple chart with the theoretical maximums that a module can fire. These numbers are based on the igniters being connected directly to the module without slats, or any time if igniter extension method being used.
Maximum # of Igniters by Power Source
|Energizer 9V*||LiPo Battery||External 12-24V Input**|
|Talon/Clip-on Igniter--Max per cue||2-Parallel||4-Parallel||5-Parallel|
|MJG & E-match--Max per cue||8-Series, 5-Parallel||9-Series, 9-Parallel||16 -Series, 12-Parallel|
*COBRA only recommends the Energizer 9V battery brand
** When using external input, the values above assume a 24V source with peak current discharge of 10 amps.
Please see Continuity Clarified to determine maximums based on the varying factors.