I myself just buy a good battery of average price and at least 3 year warranty. I found when testing and selling them in parts you overpay for the whopping 7 year warranties, some will make it but the average batteries adding all of those in too still last from 3.5 to 4.5 years and that is it. I warrantied so many batteries that never made 6 or 7 years I could not count them. Yet the average 2 year battery will commonly make 3 years. Just finished an experiment with 2 year ones, they are in two cars and both at over 3 years old but they do not last long enough when sitting. Let them sit and they won't crank after about 3 weeks and you have to jump them, but drive them every day or other day and there is no problem at all. When they die I will go back to the firm 3 year ones, less trouble when the cars sit. The computers just never stop eating power, and why they run down.
There were a lot of collector cars in my parts store area and those guys went overboard when buying batteries and then they commonly never charged them to let the cars sit a lot and then they came back with many bad batteries after 2-3 years that were supposed to be 7 or even 8 year batteries and then the complaints started. They expected the batteries to last 7 years simply letting them sit to be able to turn key and go but not that way at all.
There were a lot of collector cars in my parts store area and those guys went overboard when buying batteries and then they commonly never charged them to let the cars sit a lot and then they came back with many bad batteries after 2-3 years that were supposed to be 7 or even 8 year batteries and then the complaints started. They expected the batteries to last 7 years simply letting them sit to be able to turn key and go but not that way at all.
