Looking for some good information on theory of CDI's. I did a search with Google but did really find anything that went into details. My Evinrude manual does offer much about the theory.<br />I know the basic theory but I am looking for a schematic of the CDI for my 9.9hp 4 stroke. There is a guy on another forum that is claiming that you need a battery capable of >70 amps or you will damage the CDI. I don't see how the battery will effect the CDI when it gets its power from the stator coil. I am currently on my 4th CDI in 7 years and trying to figure out why I am having such bad luck on a motor what is seldon used on a sailboat. Are CDI's typically this fragile ??
