I balanced the wheels, and then went up to 100 mph on an empty stretch
of a highway to test their balance. Well, the balance was fine, but
after I parked several minutes after that, I couldn't crank up my car.
I brought the battery to the shop, the machine tested it and signalled
that it was bad. I replaced the battery and my car started fine. I
wonder if I could have somehow killed my battery by going 100 mph (for
a very brief time, only several seconds), and if yes, what was the
physics of what killed it. Also, the battery was 6 years old.
Thank you for answers,