Miata Battery

OK, time for Miata battery replacement again. My second ORiley Miata battery is dead after my OEM RIP. The car has 180K+ on the clock. Each of these ORiley battery last about 3 1/2 years on DD. Guess how long is the warranty? Three years! Instead of spending another $122 + Tax on another one. I am trying the Marathon battery. It is 50% cheaper at $98 delivered to my front door! They look exactly the same. I have no doubt they are from the same factory. I am hoping that the Marathon is fresher than the ORiley and last a little longer! I hope I report back in 4 or 5 years. :-)

My Duralast battery from Autozone is 6+ years old. Those NB's must eat batteries!!