This is an interesting question, but if you are saying that the car was rated for a 500amp battery and they installed an 800 amp, then no.
Aftermarket battery manufacturers routinely increase amps as a selling point. Amps (CCA) are what start the car. Batterys that go bad can have 12V but low amps and will not start the car.
If the car caught on fire after leaving the shop and you are asking if they had something to do with it, then yes, it is possible.
If an electrical fire, then they may have shorted the alt. And causes a high voltage problem.
Did you watch the car while battery was changed?
I will post this to the moderators forum and get some more opinions, so give us a few days.
Is you car totaled, did you get the fire out quickly?
Friday, December 18th, 2009 AT 8:59 AM