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I have been buying Costco batteries (Kirkland) for years andhad good luck with them all. Then whenI bought my F350, it had Autozone (Duralast Golds) batteries in it and they although looking almost new, were losing voltage and didn’t seem to crank the enginevery well. I don’t drive the truck that often as I use it mainly for pulling my trailer. So I went to Autozone to see if they might still be under warrantee. The salesman said they were under warrantee and spent a great deal of time trying to locate the store where they were purchased which he said was necessary to take advantage of the warrantee. He wasn’t able to so I bought 2 new Duralast Golds at full price. I seemed to have the same issue, losing voltage (they would go down to12.3 or 12.4 in a couple of weeks so I installed a lead from my smart charger in the trailer to keep them up (it will keep up to 3 battery banks charged). But a year later I got a dead cell in one of the batteries. Autozone replaced it but after another year and a half I got a dead cell in the otherone. So I am back to Costco batteries,which I have never had problems with however ironically I find out now that the same company, Johnson Controls makes batteries for both Autozone and Costco.
<!--[if !supportEmptyParas]-->Nevertheless I am still happy with my Costco batteries but still have to deal voltage loss on both of my Fords (my F350 and a 2005 Expedition), and keep them both on smart chargers. I do not have the same issue with my Saturn so it sits alone without a charger. I am retired and don’t drive as often as I used to but I know batteries allowed to sit at less than full charge sulfate and lose power rapidly.
Last edited by GEugeneS; Apr 28, 2014 at 10:33 AM.
Reason: spelling
IDK where you are located but if they are available in your area I've been real happy with Deka batts. The last set gave me one week shy of 6 years w/o a problem & I had the alt. go bad during that time.
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