This page should answer most general questions about hearing aid batteries. If you have a specific question about your hearing aid battery that is not addressed here, please ask on the AAC Audiology Question and Answer Board or contact your local audiologist.
All hearing aids have batteries.
The average life of a hearing aid battery varies from 1 to 4 weeks depending on the size of the battery, the power of the hearing aid, the setting of the volume control and many other things. All batteries currently sold are the Zinc-Air type. Zinc-Air batteries last longer then the older mercury batteries and are also much better for the environment. They come with a paper tab glued to the battery. This tab prevents the battery from draining while it is being stored.