Had my VX SS from new and it is on its third battery, the original factory fitted battery from memory was a 430cca not sure what brand, it was in for 5 years and still going strong but thought I might have been on borrowed time so when it was in at Holden for a service I had a new one fitted, they then put in an Exide 460cca,
that battery was still going strong after 7 years but once again erred on the side of caution, this time around I have fitted a Century 620cca, so will see how the Century goes, out of the 3 batteries I have noticed no difference in the day to day performance, was pretty happy the Exide was still going well after 7 years but thought I would try a Century to see what they were like, heard some good reports on them. Car often sits for 3 weeks at time as it gets very little use.