OTTO.
You are correct Diehard is but a name now. Since advance auto bought the brand they are putting it on their on manufacturing of batteries.
I have found that with all the mergers and only a few manufactures, that battery branding and the quality that follows if any a difficult task to determine.
So I have moved to this.
I make most new modern automotive replacements AGM batteries. They take the heat and cycles better. (make sure if you use a charger it has agm setting or made for it)
I tend now to by Walmart batteries. Why you say. because there is a Walmart in Everytown. Since most all battery companies have gone to 3 or 4 year warranties without prorating, I figure if it fails where I am i can find a replacement. The auto parts stores are not as plentiful as Walmart. Walmart is always open late.
And usually Walmart pricing is better than others.
