STLtoday – Business – Story Battery-maker Energizer Holdings Inc. has a message for baby boomers: Hearing aids are cool. To help boost sales of its hearing-aid batteries, Energizer has enlisted 1980s rocker Pat Benatar for a marketing campaign, “It’s Hip to Hear.” “Our generation has helped shape American culture, especially since we’re the first to … Continue reading Pat Benatar says HEARING AIDS ARE COOL…