Hearing aid batteries come in different sizes. Different hearing aids require different sizes of batteries. It is necessary for the hearing aid user to remember what size battery they need for their hearing aid. The tabs on hearing aid batteries are color coded to help people remember what size they need. If users cannot remember the color of the tab or size of the batteries they need, they can seek help from either the hearing aid manufacturer, the doctor’s office where they got the hearing aid, or a medical supply store.
When the tab on the back of the battery is pulled, the battery is activated. The battery works when the zinc inside the battery combines with air. The tab is meant to keep the battery inactive until the user is ready to use the battery and pulls the tab which allows air to mix with the zinc inside the battery.
Heat can loosen the adhesive that holds the tab on the battery. If the tab becomes loose, the battery may be activated before the user is ready to use the battery. This decreases the life of the battery. Therefore, hearing aid batteries should never be stored in cars, near a heat source, or other areas that may become hot.
Hearing aid batteries should be stored at room temperature. Batteries can be stored for three or four years before they start losing power. They should not be stored outside of a package among other metal objects as contact with metal can cause the battery to leak or rupture.
Once the tab on a hearing aid battery has become loose or has been pulled, the battery cannot be deactivated by replacing the tab. Once the battery is activated, it remains active until it wears out. The typical life of a hearing aid battery is five to seven days, but this can vary with different types of hearing aids and the frequency of use of the hearing aid. Digital hearing aids usually require more frequent battery changes than analog hearing aids. When purchasing a hearing aid, the customer may want to ask the medical professional how often the battery will need to be replaced.
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