Hearing Aid batteries F.A.Q.

Can hearing aid batteries be stored in the refrigerator?

No – Moisture in the refrigerator is absorbed by the battery, shortening its life.

Why is there a tab on my battery?

A zinc air (hearing aid) battery uses air outside the battery as a source of power. The tab seals the air holes and ensures freshness until you are ready to use the battery. To activate the battery, simply remove the tab, wait one minute to allow air to enter and activate the ingredients, and insert the battery into your hearing aid. Replacing the tab when the battery is not in use will not extend the battery life.

Can I insert the battery into my hearing aid as soon as I remove the tab?

Batteries should not be put into hearing aid immediately after removing the tab. Wait one minute – this gives the battery time to ramp up. Many times when you first take the tab off a fresh battery and immediately place it into the aid, the aid may beep signaling a dead battery. What has occurred is that the battery has not received sufficient air to generate enough voltage to allow the aid to function, hence the beep. By simply waiting a minute or two the problem will solve itself.

How long do the batteries last?

Battery life is driven by several factors, including: Hearing loss, features of the hearing aid and the noise environment. A battery drains differently if a patient is at home having dinner vs. sitting in a noisy restaurant.

    A general rule of thumb is:

  • Size 675: Approximately 10 – 21 days
  • Size 312: Approximately 6 – 10 days
  • Size 13: Approximately 8 – 14 days
  • Size 10: Approximately 3 – 7 days

What is the best way to carry spare batteries?

Batteries should either be kept in their original packaging, hearing aid carrying case or stored in a battery caddy. Room temperature with climate control is optimal for zinc air batteries. Zinc Air Extra batteries are designed and manufactured in 70 degree temperature with a 50% relative humidity. Refrigeration is not recommended (see first question above).

What conditions are bad for batteries?

Consumer should avoid batteries making contact with metal objects (coin purse, in pocket with keys, etc.). Additionally, batteries are harmed when exposed to varying extreme temperatures (sitting in a car during winter or summer heat).

Why will a watch battery last five years but hearing aid batteries last less than three weeks?

A watch doesn’t have the features or digital processors of a hearing aid and does not drain the battery the same way.

For answers to questions regarding hearing aids, hearing loss or hearing aid batteries please contact Ayling Hearing & Audiology Clinic on 03 9521 8979.