Rayovac Extra 312 hearing aid batteries with brown color coding. The Rayovac Extra 312 battery offers a long lifespan and excellent durability. Rayovac 312 batteries are mercury-free, making them environmentally friendly. They meet the highest quality standards.

Zinc-air hearing aid batteries have a particularly high energy density and provide an almost flat discharge curve. They are the optimal power source, especially for hearing aids.

The battery's air holes are initially covered with a protective film to keep them in a "standby" state until needed. The inherent self-discharge of zinc-air batteries with the protective film in place is only about 3% per year. The film is removed when the battery is inserted into the hearing aid. After a few seconds of activation time, the battery begins to supply power. In the activated state (protective film removed), zinc-air batteries have a limited shelf life and should be used as soon as possible.

Wireless technology is now indispensable in hearing aids. Speech signals are transmitted to your hearing systems via hearing aid accessories. This data transmission requires a consistently high power supply. Rayovac Extra 312 hearing aid batteries provide the quality and stability necessary for uninterrupted transmission.