Energizer Holdings is the second-largest manufacturer of household batteries in the United States. Industrial batteries, rechargeables, and hearing aid batteries are also in the firm's portfolio. The company was spun off from Ralston Purina in 2000. It acquired Schick, the second-largest razor and blade business, in 2003, Playtex in 2007, the Edge and Skintimate brands in 2009, and American Safety Razor in 2010. The firm aims to diversify away from household batteries and hold leading market share in its categories.