Damnit, why does every battery thread turn into a registration issue.
Get your damn batteries registered, this is not a Honda civic. Why do ppl keep arguing this? You can drive without registering your battery yes, does it make it a good idea? No! I can drive around for 50,000k without changing my oil, does that make it a good idea? Just register the damn battery.
Now, back to my question, where can I get an oem part number?