[Al Skierkiewicz]

Thanks Bud for overlaying the graphs. It shows pretty conclusively that the differences between the batteries lies mostly in the method used to test. Let's not get hung up on the max current spec. The real difference between the batteries is the internal resistance, 11mohm for the old battery and 10mohm for the new. Hang a dead short on the output terminals (please don't do this) and Ohm's Law tells you...12/.011 vs. 12/.010=1099 vs. 1200. Throw in some safety margin so you don't cause the battery to explode and you get down to the 720 amps max discharge for a new, fully charged battery, no matter the manufacturer.