I ran across this about Walmart batteries but I don't know if it's accurate.

Quote
Jason Johnson, Automotive Service Advisor (2016-present)

Most EverStart batteries are made by Exide with a few made by Delphi.

Johnson Control does not make batteries for Wal-Mart nor do they any longer make Interstate (now made by Exide.)

Common JCI battery brands are Optima and Duralast. New Duralast batteries come off of the same line as the old Interstate batteries with the same guts and warranty.

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