Rayovac Extra 312 hearing aid batteries with color coding in brown. The Rayovac Extra 312 battery offers a long runtime 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 horizontal discharge curve. They are the optimal power source, especially for hearing aids.

The air holes of the battery are initially covered with a protective film to keep them in a "resting state" until they are needed. The self-discharge rate of zinc-air batteries with the protective film applied is only about 3% per year. The film is removed when inserting the battery into the hearing aid. After a few seconds of activation time, the battery begins to supply power. In the activated state (with the 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.