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Hearing Aid Batteries 101

With rechargeability being the new wave of the future, there are a variety of different types and sizes of batteries to choose from when purchasing your new hearing aids. No option is better than the other so the best way to decide which battery to get is to determine which one you can best manage and manipulate on a routinely basis.


Disposable batteries can last anywhere between 3 to 10 days. The causes that effect the lifespan of the hearing aid will be dependent on the size, the individual hearing loss, the environment that you are in and the technology of the specific device that you have.

Battery Size

Sizes include 10, 312, 13 and 675 and increase in size respectively. If you are not sure which batteries to buy, not to worry, they are also color coded 10 (yellow); 312 (brown), 13 (orange) and 675 (blue).

The smaller the size of the battery the shorter the lifespan. Smaller hearing aids like invisible in the ear, completely in the canal and some receiver in the ear hearing aids come with a size 10 (yellow) battery. These types of hearing aids are best for people with more mild to moderate hearing losses.

Degree of Hearing Loss

When choosing the specific battery for your hearing aid, the audiologist should take your dexterity and hearing loss into consideration. The more significant the hearing loss the more the hearing aid must work to accommodate your needs. For instance, power hearing aids that fit more severe hearing losses will need a bigger battery [size 13 (orange) or 675 (blue)] to avoid excessive drainage.

Level of Technology

Does your hearing aid connect directly to your iPhone or accessory?

Streaming and the constant use of your mobile cannot only effect the battery life of your phone but kill your hearing aid batteries too.

Is your hearing aid completely automatic?

Most hearing aids will now come with an automatic adaptive manager that will have to manipulate the sound quality of the hearing aid depending on the environments you are in on a routinely basis.


Living in one of the noisiest cities in the world can be hard on your hearing aids. When you attend a wedding, a party or noisy gathering, your hearing aids must work extra hard to reduce the excessive noise and improve speech understanding.

Tip From Your Audiologist: Before you attend your next gathering, make sure that the battery is new, fresh and ready to go.


Rechargeable batteries can last typically between 17 to 20 hours. Most rechargeable hearing aids will take up to 3-4 hours for a full charge. The two different styles of rechargeable batteries are silver-zinc and lithium-ion rechargeable batteries.

Tip From Your Audiologist: Like a cell phone, charge your hearing aids overnight so they are nice and fresh for the next day.

Silver-Zinc ZPower

 Most hearing aid companies now offer behind-the-ear hearing aids with a rechargeable option. This option will allow you to use both rechargeable and disposable batteries with your hearing aid. These devices come with a battery door so that the rechargeable battery can be removed and replaced once annually.

Lithium-Ion Battery

Completely enclosed in your behind the ear hearing aid, this option is best for people who have difficulty manipulating a battery door and do not want to fuss with changing their batteries at all. These batteries a meant to last a minimum 3 years and can be replaced by the hearing aid manufacturer.

Tip From Your Audiologist: If you will not be wearing your hearing aids for several weeks, please remove your hearing aids from the charging station not drain the battery.

If you have any questions about your batteries, do not hesitate to contact us. We look forward to hearing from you!