PowerOne Battery size 675


Compatible for all brands of hearing aids which use size 675 battery, such as Phonak, Oticon, Signia, Bernafon, Starkey, Widex, Unitron. GN Resound, Sonic Innovation.


We offer our proven zinc air batteries in an alternative, mercury-free version. power one will thus live up to its claim to be one of the most environmentally friendly hearing aid battery producers there is.

If until now only traces of mercury were contained in our conventional zinc air batteries, we are in a position today to supply zinc air batteries free of all mercury.

Sizes 13 and 312 are now wireless approved for modern hearing aids.

Power One MERCURY-FREE cells are manufactured in the world’s largest and most up-to-date hearing aid battery plant in Ellwangen, Germany.

We provide eco-friendly battery technology, produced under clean room conditions, with an Enhanced Safety & Performance housing coating.

Power One MERCURY-FREE cells are manufactured using only high-grade and refined raw materials. Our energy management system is certified in accordance with ISO 50001. With the new international standard, energy consumption and energy policy are placed centre stage.

Power One MERCURY-FREE means, for you, hearing aid energy with premium performance and durability – of course with the patented stable high level of voltage that power one provides.

Why zinc air technology?

Zinc air batteries have an especially high energy density and exhibit an almost flat drain curve. They are therefore the ideal power supply, especially for today´s digital hearing aids.

The air holes of the battery are initially sealed with a protective tab. They are kept in this way, in an “inactive state”, until they are needed. The inherent self-drain of zinc air batteries with protective tab attached amounts to a mere 3% a year. The film is removed when the battery is inserted into the hearing aid. After several seconds of activation time, the battery begins to produce current.
In the activated state (with protective tab removed), zinc air batteries can only be stored for a limited period and should be used as quickly as possible.

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