8/15    How ofter are you suppose to change your car battery?
        \_ Lead-acid batteries last about 5 years if well cared for.
           That means, it is never discharged more than 50% capacity,
           and is kept reasonably cool.  Depending on where you park
           (hot sunny spot?), how often you leave lights on, etc., the
           outcome will be different.  Just test it if you want to be
           sure.  Otherwise, carry a jump cable and wait until you get
           stuck somewhere.  And don't forget to recycle.
        \_ My battery's rated 60 months although I have to honestly say that
           I've never reached 60 months in the past 4 battery changes I've
           done in my life. I usually run them down, which is usually after
           3-4 years, call AAA when I need a jumpstart, and get a new one.
        \_ When it dies.  -average American male