Hearing Aid Batteries


Every hearing aid uses batteries of a specific size and number. The batteries can be made by any manufacturer, but must be the correct size.

There is a positive and negative pole or end with each battery. The positive end is marked with a little (+) sign. The (+) sign on the battery must be placed in the aid on the same side as the (+) sign indication on the battery door.

When the battery is dying or losing its charge, it may go weaker gradually or suddenly “cut-out”.

There are two types of batteries: mercury and air activated. You may find it helpful to try both to determine which lasts longer and suits you better. It is generally found that mercury batteries are less expensive but do not last as long. If they have been lying on a store shelf for a while they might not last at all. It is important to purchase your batteries either from your hearing aid dispenser or a store which has a reputation of discarding batteries which have been on the shelf for a long time. In order to use the Zinc Air batteries the sticky tab attached must be removed. This allows air to pass into the battery and activate it.

Care of Hearing Aids

Hearing aids are carefully designed and built according to the physical and hearing characteristics of the individual ear. They represent the highest hearing technology available and a significant investment of time and money on the part of the purchaser.

The earmold is an essential feature of the hearing aid system. It provides support for the aid and directs the amplified sound into the ear canal with high efficiency – if it fits properly. If it does not fit properly it may cause whistles and squeals, or produce local irritation and soreness.

Battery Insertion

Batteries which are inserted improperly will prevent the hearing aid from working and can cause physical damage to the unit. The smallness of in-the-ear hearing aids may cause difficulty in seeing battery markings and compartment markings. A magnifying glass and good lighting is a help.


Be sure to work on a table or other hard surface. Use a soft tissue to wipe the hearing aid clean. Do not use water or solvents which may cause damage to the unit. Wax buildup or blockage may be removed with the wire loop tool or brush which comes with your hearing aid. If using a wire loop, gently insert the loop into the sound canal opening and pick out the debris.

Be careful to not pick at the tube which lines the opening. If this is pulled out, the hearing aid may need to be returned for repair. If using small brush, turn the aid upside down and brush out the wax so it falls out on the table.

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