Frequently Asked Questions About Batteries

Hearing aid batteries

1 How Does A Hearing Aid Battery Work?

The most popular hearing aid battery system today is zinc air. This works through a unique construction that uses atmospheric oxygen from outside the battery.

These batteries pack more energy into a battery cell and twice the life than the older mercury system. With zinc air batteries you can expect fewer replacements, clearer tones, fewer volume adjustments and longer battery life than with mercury batteries.

When the tab is removed air enters through the holes. The oxygen in the air reacts with the zinc to produce zinc oxide. This reaction produces energy – the energy which powers your hearing aid.

Hearing aid batteries

2 Why Is There A Tab On My Battery?

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 put the battery into your hearing aid.

Replacing the tab when the battery is not in use will not extend its life.

3 What Are The Battery Sizes?

The battery sizes are 675, 13, 312, 10 and 5. To identify the size most manufacturers use an industry standard colour code on their zinc air tabs and packaging.

4 Are Batteries Interchangeable Among Manufacturers?

Manufacturers have different battery quality and performance but the battery dimensions are standardised within the industry. Just match your size designated by the colour code.

5 How Long Will My Batteries Last?

Battery life is determined by the type and amplification of your hearing aid, as well as the length of time you wear it. Your audiologist can tell you the battery life you can expect.

Hearing aid batteries

Different types of batteries

6 How Should I Store My Batteries?

You should store your hearing aid batteries at room temperature and avoid hot places since heat will shorten the life of the batteries.

Refrigeration is not recommended. In addition, please read the warnings and usage symbols/instructions on the package carefully.

Batteries should not be carried loose in your pocket or purse since metal objects such as coins or keys can cause a battery to short out, leak or rupture. Always carry the batteries in the dial packs supplied.

Store discarded batteries in places that cannot be reached by infants or children. Consult a doctor at once if a hearing aid battery is swallowed.

7 What Is The Shelf Life Of My Batteries?

The standard shelf life of your battery is three years from date of manufacture. However, the fresher they are, the better they perform, especially when kept in the correct conditions.

To find out the best before date see the back of the pack where there is a four digit date code which notes month and year of the best before date. For example, 0713 would mean best before July 2013.

Our webshop Hearbase Direct stocks top quality Rayovac hearing aid batteries.

We offer these in boxes of 60 which is great value for money and a convenient way of buying them. See the full range and order supplies here.