John, are you insane!! If…
John, are you insane!! If your batteries only last 3 yrs , you don't know how to drive. I have had over 20 cars and trucks in my lifetime and NEVER had a battery last less than 6 yrs/ 60,000 miles. I just sold 2014 Dodge Challenger SRT and that original battery lasted 8.5 yrs/78,000 miles. My current Ram Rebel is 7 yrs old with 50,000 miles on it and still has it's original battery. Batteries are made to last at least 6 yrs, that why the good ones come with at least a 6 yr warranty.