Originally posted by rdanz
If it ain't broke don't fix it.
Expected battery life is subject to many uncontrollable parameters. The rule of thumb is 5 years, but some give up the ghost at three, while others can last over 7 years.
Case in point: The OEM battery on our SL finally died about a month ago...that would put the battery life at about 8 years!!!
And we did get a replacement at Interstate...about half of what the OEM would cost...