Bought my 42 month Interstate battery 1 year ago to the month and it suddenly died from an internal short. This was a replacement for another Interstate battery that lasted 10 months. This one in turn was a replacement for a Costco Kirkland (made by Interstate) 100 month battery that lasted 18 months! So, THREE Interstate batteries that lasted in total fewer months than cited in the warranty for my 42 month! Not sure what that is called on the West Coast, but here we call that garbage!