Quote:
Originally Posted by kibb
Most batteries in the US are made by Delphi, Exide, and Johnson Controls. They just put private labels for individual companies. Interstate is made by Johnson Controls the same company that makes Optima, Diehard, Duralast, and Everstart.
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Even though they are made buy the same company doesn't mean each label is made to the same standard.
Lots of companies make products with different labels but not the same quality. It's about market share.