Hearing aids are becoming smaller and more powerful all the time, whether they run on standard or rechargeable batteries. While a rechargeable battery needs to be charged regularly, standard hearing aid batteries are disposable and need to be replaced. In this section, you’ll find all the information about buying and changing your hearing aid batteries.
This explains why the holes in hearing aid batteries are sealed with special protective foil before you use them! Before you insert a battery into your hearing aid, you need to remove this protective foil. Since the battery only begins to work once the foil is removed, it may take a moment for the power to reach your hearing aid.
A zinc-air hearing aid battery works like this:
Once you’ve removed the protective foil from the battery, it begins to create energy, and there’s no way to stop it! So make sure you only remove it when you’re ready to put the battery in your hearing aid.
Hearing aids don’t always have to be powered by standard, disposable batteries. Some hearing aids are available with rechargeable batteries. If you have rechargeable hearing aids, you don’t need to buy new batteries for it: once the battery runs out of power, you just recharge your hearing aids.
You need one hearing aid battery per hearing aid.
This depends on the type of hearing aids you have and the type of batteries they use, as well as how long you wear your hearing aids for. A size 10 battery in a hearing aid with lots of advanced features might last between three and five days, while a larger, size 13 battery in a hearing aid with simpler functions could last for up to three weeks.
When you’re fitted with your hearing aid, your Hearing Aid Audiologist will make a note of what size batteries you need.
|Hearing aid type||Colour code||Diameter||Height||Capacity||Voltage|
|675||Blue||11.6 mm||5.4 mm||650 mAh*||1.4V|
|13||Orange||7.9 mm||5.4 mm||310 mAh||1.4V|
|312||Brown||7.9 mm||3.6 mm||180 mAh||1.4V|
|10||Yellow||5.8 mm||3.6 mm||100 mAh||1.4V|
*mAh = milliampere hours
The first step is to remove the protective foil from the batteries. It takes around two minutes after this for your battery to reach full power, so you might choose to wait before you insert them into your hearing aids. Make sure you insert the batteries with the minus and plus sides the right way round. If you find that the battery compartment won’t close, or is difficult to close, it’s usually because you’ve got the plus and minus back to front!
Batteries should be stored at room temperature. Make sure you keep them out of reach of children and pets.