Corroded Battery Cable

I have 2002 Saab 9-3. I replaced my battery 11/22/06 and had a major dealership tune-up 9/4/2007. Yesterday (10/7/07) my car died. We opened up the battery casing and found that there was so much corrosion that it had severed the battery cable. The dealership is claiming that the battery had a standard cleaning in September and there was no corrosion. They are saying the corrosion of the cable could have started from the inside of the cable working itself outward. Is this possible? Are they telling me the truth or leading me down the path of cover up?



Excessive corrosion often happens because the alternator is overcharging the battery. After replacing the cable, have the battery and alternator checked at many auto parts stores, for free. And what do you get if you win the battle with the dealer? What price “satisfaction”?