My '03 (built Oct '02, 108,000 miles) still has the originals.
7 years and 160,000 miles. Other than having to clean the corrosion off every now and then they are still running strong. I've considered changing them based on age, but will wait a little longer. When I do replace them, it will probably be with the OEM batteries. Part of me says that there are better batteries out there than Dodge, but I can't complain about their performance or argue with history.