Originally Posted by
onehundred80
Cranking amps go down on all batteries as they age, Vartas are extremely good batteries no matter their age. From what I have seen here on the forum and personally with the two Vartas I have had they will outlast most batteries you can buy. I have a Varta coming up to its ninth birthday and I keep it as a spare and fully charged. It was working fine when I removed it last spring when I thought it too old to be reliable.
I agree with comments above. My 2007 Coupe has the original Varta battery still installed. I don't put that many miles on the car each year - the proof being that car has only 18k on the ODO. But I do place a charger on the battery every 6-9 months to keep it fully charged. And I check the electrolyte level in the cells 1x/year. From my perspective, the Varta may be the best battery I've come across in years.