Hello, My battery was replaced 3.5 years ago. 3 years + is around what a battery will lost in sometimes warm? AZ. I had to replace again a few weeks ago. The 1st replacement was a battery from a GMC/Chevy dealer. The battery just installed was from Auto Zone ,? brand at this time since I can not find the receipt, but it was the better of 2 choices from a national co. and it was not Auto Zone's brand. I picked a battery that had a national warranty if it went bad while I was across country somewhere. AZ can tell you the brand if one is needed.