Energizer, 6 Pack, 1.4V, 10CR-6ENRUS, zinc air hearing aid batteries. You'll love hearing this: Energizer hearing aid batteries are our longest-lasting ever. And trust us, we know a thing or two about ears. Energizer batteries deliver consistent sound quality across their life span for a better hearing experience. They're also designed to prevent damaging leaks and premature low battery signals to ensure you always get our best performance and enjoy hearing everything the world has to offer.