I've actually lost a round due to a dead battery. An older optima lasted me 12 years, finally one day going into 2nd round of eliminations it decided it was done, even though it had started the car ok just minutes earlier, Elvis had left the building... even after jump starting, it died as soon as I let it idle. My competitor gave me time to get it going waiting until all others in our class had gone, they had to go make their pass eventually & move on... that's how competition goes sometimes.
This is big LIE!!! It never ever deliver 6000A, even not on wildest dream. Take down at least 2 zeros and even 60A is big-big-big dream. More like 6A playground