Hearing Aid Batteries

Our team at Ascent Audiology & Hearing wants to ensure that you are informed about all aspects of hearing aid technology. One of the most important parts of hearing aids is the power supply! Many of us have experienced the inconvenience of batteries running out at an inopportune moment. Here, we cover some battery basics.

Hearing Aid Battery Types


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The most common type of hearing aid battery is the zinc-air battery, which are those tiny disks you also use for watches and other tiny electronic devices. This type of battery cannot be recharged and must be discarded after use.

There are five different sizes of hearing aid batteries. The one that's right for you depends on the shape and size of your hearing aids. Fortunately, the hearing aid industry has color-coded and numbered the battery packaging to make replacing them simpler. The adhesive sticker on the back of the battery is also color-coded:

Brown (#312):
Since this is the smallest battery, it's best for invisible-in-the-canal and completely-in-the-canal hearing aids. They have a 175-hour battery life.

Yellow (#10):
This is another option for the types of hearing aids mentioned above, but they only last 80 hours.

Orange (#13):
This is the one you need for larger In-the-ear and Behind-the-ear devices. They have a 240-hour battery life.

Blue (#675):
This battery has the highest capacity and can run for up to 300 hours. However, it can only be used with larger hearing aids, such as Behind-the-ear hearing aids.

These conventional zinc-air batteries are widely available in drugstores and electronics stores. They also don't need to be charged at night and are less expensive than rechargeable hearing aids in the short term.

Tips for extending the life of your disposable batteries

Here are some of the easiest ways to make your zinc-air batteries last longer if you have disposable hearing aid batteries.

• Since you don't wear your hearing aids at night, turn them off. This will help conserve energy.

• At night, open the battery door and leave it open overnight. Any moisture or condensation will evaporate, extending the life of your battery.

• Keep your hearing aids at room temperature and out of the bathroom and other humid areas of your home. Humidity and heat will both deplete your battery life.

Rechargeable Hearing Aids

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Hearing aid technology is progressing. Instead of using disposable batteries that need to be replaced every day, rechargeable hearing aids are becoming more common.

This is a hearing aid with a built-in battery. All you have to do is charge your hearing aids overnight in a charger, and you'll have a full day's worth of power in the morning. You can also charge your devices in under 30 minutes with some quick charging options.

Rechargeable hearing aids have several advantages.

More convenient:
Simply charge your hearing aids overnight in the charging dock, and your hearing aids will be ready to go the following day. You won't need to remember to purchase batteries or carry spares because your battery will no longer let you down at inconvenient times.

Better for the environment:
Batteries are notoriously difficult to recycle, and most people do not ensure that they are correctly disposed of. Of course, rechargeable batteries must be properly disposed of as well. However, you'll probably be able to use the same battery for the life of the hearing aid.

For those with less dexterity, this is a better option:
You don't have to worry about tiny batteries needing to be replaced. If anyone has vision or dexterity issues, the small size of conventional disposable hearing aid batteries and hearing aids themselves can be challenging to manage.

All-day power for the most demanding users:
Lithium-ion rechargeable batteries can keep up with all of today's latest technology's power demands while still keeping enough charge for an entire day of hearing.

There are no other charges: Rechargeable hearing aids have no additional costs. The batteries usually last for many years, if not the entire life of the hearing aid.

There are some other factors to consider when buying a hearing aid, so it's essential to discuss the best hearing aid for you with a hearing care provider. We're here to assist you if you have any more questions. To schedule a consultation, please contact us today.