Sensible devices are always using the correct battery to protect delicate devices. HUATAI zinc-air batteries are designed to deliver reliable quality for sensitive hearing aid devices. It offers a longlasting experience for different styles and models of hearing aids. It holds a stable operating voltage throughout use and performs well over a wide range of temperatures. With the highest energy density of all electrochemical systems and due to their small size, these batteries are excellent for powering small energy-hungry devices in need of continuous discharge.