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Zinc-Air Hearing Aid Batteries: An Analysis of Functional Performance
James Thomas1, Barry Bardsley2, Jane Wild3
1Adult Audiology & Primary Care Service, Swansea Bay University Health Board, Swansea SA2 8QA, UK.
Background:
The aim of this study was to evaluate the performance of three disposable hearing aid battery brands available in Wales. Hearing-impaired individuals who utilise hearing aids rely on the functionality of their devices, which is often contingent upon the quality and longevity of disposable batteries.
Materials And Methods:
A grey literature review foregrounded the battery standards. The "real-life" use of batteries was supplemented through laboratory testing. Parameters relating to performance quality were used to quantify an overall service life of five PR44- and four PR48-size batteries per manufacturer.
Results:
The literature review signalled a large gap in hearing aid battery consumption research. All battery brands underperformed compared to their specifications but met IEC standards.
Conclusions:
Revisions to battery consumption test conditions should reflect new technological features and refine expectations of real-life use. It was possible to statistically identify the best performing hearing aid battery brand.
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