Add Yahoo as a preferred source to see more of our stories on Google. Energizer brand batteries sit on display in a supermarket in Princeton, Illinois, U.S., on Wednesday, April 30, 2014. (Daniel ...

Energizer may have the brand name recognition and cute pink bunny mascot, but Costco's Kirkland batteries are a great value. Which one comes out on top?

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NEW YORK - Duracell has sued Energizer, accusing its rival of misleading consumers in a nationwide TV and online ad campaign about whose alkaline batteries last longer. In a complaint filed in ...