Rayovac Extra 675 hearing aid batteries with orange colour coding. Rayovac Extra 675 hearing aid batteries are powerful, high-quality hearing aid batteries that have been developed in close co-operation with hearing aid manufacturers all over the world. The zinc-air button cells have a constant capacity, a long service life and the best performance. The batteries have a shelf life of four years.

Specifications Rayovac Extra 675 hearing aid batteries

• Voltage (V) 1.45

• IEC until October 1990: PR44

• IEC after October 1990: PR1154

• Packaging 100 % recyclable

• Mercury-free

• Wireless tested

• Typical capacity (mAh)

• Diameter (mm) 7.9

• Height (mm) 3.6

• Colour blue

Why zinc-air technology for hearing aid batteries?
Zinc-air hearing aid batteries have a particularly high energy density and offer an almost horizontal discharge curve. They are therefore the optimum power supply for hearing aids in particular.

The air holes in the battery are initially covered with a protective film. This keeps it in a "resting state" until it is needed. The system-related self-discharge of zinc-air batteries with a protective film attached is only around 3 % per year. The foil is removed when the battery is inserted into the hearing aid. After a few seconds of activation, the battery starts to emit current. When activated (protective foil removed), zinc-air batteries have a limited shelf life and should be used as soon as possible.

Wireless radio tested Rayovac Extra 675 hearing aid batteries
Wireless radio has become an integral part of hearing aids. Speech signals are transmitted to your hearing aids via the hearing aid accessories. Rayovac Extra 675 hearing aid batteries provide the quality and stability required for uninterrupted transmission.