After having starting problems with the Mitsubishi, I had to replace the 2 batteries. To my amazement the batteries were 10 years and 10 months old. Given the hard life they had ( starter & alternator problems, batteries draining, then being overcharged etc) it is all the more astonishing. They were Deta made in Germany. It appears the company went bust some years ago after taking over Exide. I am at a loss to know what batteries would last as long.