AutoZone Just schooled me I guess..........

I was at home, jumped the car. Removed cables and let it idle. Removed the Negative battery cable and the car did not skip a beat. Ran just fine.

Took the battery to Autozone to have them test it. Told him what I did. He said "no make no difference at all!" Unless I am running an old generator and NOT an alternator, my test I did means nothing. He hooked it up to see if he could get a read. Dead. He said the battery is only 3 months old so 95% sure it's not the battery."