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“How to Care for Hearing Aid Batteries.”

Whether hearing aid batteries are expensive or inexpensive, everyone would like to get a longer life from the batteries. To get the most consistent and longest life from your batteries, there are some things that you should know.

How to Care for Hearing Aid BatteriesHow long a hearing aid battery lasts depends upon several factors.

  • The size of the battery
  • The battery type (zinc air or mercury-free)
  • The capacity of the battery
  • The amount of battery current necessary for the hearing aid to function
    • Sound input levels, noise levels, speaker and amplifier power will affect the amount of current needed
    • Use of streaming devices require a greater amount of energy
  • Air availability through the battery door
  • The atmospheric temperature and humidity affects the battery life.
    • High or low temperatures adversely affects battery life
    • High or low humidity adversely affects battery life
    • Low temperatures can reduce the battery’s voltage

Zinc air hearing aid batteries can be stored up to three years at room temperature.

Currently, the manufacturers of hearing aid batteries are required in some states to change the formulation of the battery. They are going to a mercury-free battery. The downside for hearing aid users it that it seems the mercury-free batteries do not get as long of a life as the regular zinc air batteries.

How to Care for Hearing Aid Batteries – Please Call Lakewood Hearing (303) 988-7299

So how do you get the maximum life from your hearing aid batteries?Store the batteries at room temperature. (Do not store them in the refrigerator.)

  1. Keep the opening in the battery door clean and open so sufficient air can get to the battery.
  2. Open the battery door at night to turn the hearing aids off.
  3. Turn off all streaming, if you use a streamer, when not in use, e.g., turn off the Bluetooth on your telephone
  4. Determine how long you typically expect a battery to last. Do you usually change your battery on Sunday? If so as in this example, on Saturday night before you go to bed, remove the tab from the batteries you will install the next day.
  5. At a minimum, pull the tab off the batteries and wait 5 or more minutes before you install them in your hearing aids.

How should mercury-free hearing aid batteries be disposed? According to the Handbook of Batteries1, the mercury-free batteries do not require special handling when discarded or recycled.

How should zinc air batteries be disposed? According to Rayovac, Zinc Air batteries pose no threat to the environment. They pass the U.S. Environmental Protection Agency’s toxicity tests for Mercury, Cadmium and Lead.

A Guide for Hearing Aid Battery Care

Sources:
1David Linden, Thomas B. Reddy (ed). Handbook Of Batteries 3rd Edition, McGraw-Hill, New York, 2002 ISBN 0-07-135978-8, chapter 13 and chapter 38

2 http://www.microbattery.com/microbat/tech-habmain/rayovac-battery-10za-data.pdf, accessed 08/12/2014