Is there a reference somewhere listing how much battery power is required for an igniter to start a rocket motor? The reason being that I wish to construct my own launcher and want it to have adequate power, but not vaporize the rocket when I push the button. LOL I plan on using it to ignite mini-motors through D sized motors. I know Estes has used 4x "AA" baterries, 4x "C" batteries, and 12v lantern batteries in the past. Maybe even using a rechargeable USB style battery, if it can safely be utilized. I'd also like to consider using a heavier gauge and longer length wire and more robust micro-clips. I am looking for suggestions and examples. Also maybe advice on cluster ignition too. Thanks!