I had a Optima. One year and one month old quit. One month after warranty was up, pro rate started $130 for a new one. I ran 29's from wal mart for 5 years in my boat and finally one quit. Wal-Mart still warrants them for 12 months not the 18 month free replacement like old warranty.

Also, if you buy an Optima, you can not exchange them just anywhere like a wal mart battery

Just my two cents worth, there is good and bad in anything you buy.

Good fishing