Bought this on 3-09 realized it was bad when I summarized my boat 4-11, one month after the Warranty was out, started to notice it was going out last summer but thought it was sulfated and bought a ctek charger to take care of it in the winter. I had bought a walmart battery at the same time with a perco switch just in case and the walmart is still able to start my boat but the optima will not even crank the motor over! Called to optima and they were thrilled that the battery was just out of warranty and did not even want to help!! I got about 7 months out of this battery. I would have considered even giving them a chance if they would have at least prorated a new one since the battery has not been in use since October of last year, im 31 and have a lot of battery's to buy in my lifetime but it will not be an optima!!