In my search for an answer I found a post regarding car batteries but it didnt offer me anything I was looking for. My question, or the a step toward the correct question is how exactly are cold cranking amps on any particular battery determined. At first I speculated it was the amount of or quality of lead used, however that opened more questions rather than answers. And, not to seek any sympathy but I sell batteries, not make them. My understanding of how they truly work and why is limited. Although it has been a fascinating journey finding information. If anyone can provide another step in the right direction or an answer I would be thrilled to hear it.