Car (Part 2)

I got my car back yesterday about about 5 hours after I took it into my mechanic. I was happy with the result, but puzzled at the same time. By the way my car was acting, I was sure it was the alternator, but it wasn't. I actually saved myself money because it was the battery. The puzzling thing is that I replaced the battery in my car about five times already. This is no joke. I have had this car for about 2 and a half years and it's already gone through 5 batteries. All of which have been warrentied of course. So each time I replaced them it was free. I don't understand, and neither does my mechanic understand why my car keep going through so many of these things. One car battery should last four to five years. I've gone through 5 in not even 3. Somethings up with my car, and it's got to be more than that it's a ghetto old Honda.