Energizer Holdings is an American manufacturer of batteries, headquartered in Town and Country, Missouri.It produces batteries under the Energizer and Eveready brand names, and formerly owned a number of personal care businesses until it separated that side of the business into a new company called Edgewell Personal Care in 2015.

The company has its foundation in the Eveready Battery Company, which in 1980 changed the name of its Eveready Alkaline Power Cell to Energizer. In 1986, Eveready Battery Company was sold to animal and human food manufacturer Ralston Purina. In 2000, Ralston spun off Eveready, and it was listed on the New York Stock Exchange as Energizer Holdings, Inc..

In 2003 under the leadership of then Chief Executive Officer J. Patrick Mulcahy,  Holdings started expanding into the personal care product sector by buying personal care and razor brand Schick and gardening tools and razor brand Wilkinson Sword from Pfizer.

In 2005, after Hurricane Katrina, Energizer worked with the Red Cross to donate flashlights, batteries, razors and funds to help Hurricane Katrina relief workers and victims. On November 3, 2005, Energizer Holdings Inc.said that higher sales of its Schick razors and blades partially offset lower sales of its batteries in North America. On a constant-currency basis, sales at Energizer rose 4 percent in its fourth quarter.