There are only 3, I believe, manufacturers that make car batteries and only 2 are large companies that make the majority of them.
Johnson Controls is the one that people consider to be the premier manufacturer and they make the Interstate, DieHard, Duralast, and some of the Wal-mart Maxx batteries.
I just choose from those 4 depending on which has the best deal going on when I need to buy.
I prefer DieHard or Duralast since they offer the best warranties. Interstate only gives you 2 years free replacement instead of 3 and I think Wal-marts Maxx batteries only come with 3 year warranties while the other 3 come with 5 year.
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