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, the insert the battery into your hearing aid.
Replacing the tab when the battery is not in use will not extend battery life.

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

Batteries should not be put into the hearing aid immediately after removing the tab. Wait one minute -
this gives the battery time to ramp up. Many times when the tab is taken off a fresh battery and immediately place it into the aid, the aid may beep signaling a dead battery. What has occurred is 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 noise level of the environment. A battery drains differently if a member is at home having dinner vs. sitting in a noisy restaurant.

A general rule of thumb for the life of a Hearing Aid Battery 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. Kirkland Signature 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 not good for batteries?

Members 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 cold 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 your local Costco Hearing Aid Center.

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