Part stores kept telling me my battery was fine, but instead of getting 10 hours of radio play with the engine off, I was barely getting 10 minutes! They told me to get a thorough electrical diagnostic. I turned to Specialty Auto Repair and they did a very thorough diagnosis and told me there was no problem with the electrical system. I got a new battery but if I need it I will certainly go back to them to get a new alternator! Did I mention that they did not charge me for the diagnosis? Well they didn’t! Can’t recommend anyone better! I can trust them and that’s saying a lot!!!