I went to have my battery tested because my car wasn't starting unless jumped.  I had  bought a new battery at another Autozone less than a year before, so I figured it was probably the alternator.  The rep tested my battery and told me I needed a new one.  I told him I didn't have my receipt showing the warranty any longer.  He looked it up by my phone number and installed a new battery right away.  They were so kind and helpful.