Hearing Aid Batteries

Hearing aid batteries

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In today’s, day and age, hearing aids are becoming more and more powerful, technologically advanced and smaller in size. As the landscape of hearing aids begins to change so to does their requirements for power consumption and sizes of batteries. At United Hearing Healthcare, we understand at times how complex it can be to navigate everything about hearing aids, let alone their battery requirements. It is this very reason, why we have created this one stop shop for everything you need to know about hearing aid batteries, sizes, lifespan and brands.

Types of Batteries

There are many different types of hearing aid batteries and every type offers pros and cons to their use and service life. While there are rechargeable batteries available on the market like nickel metal hydride, silver zinc, and lithium ion, but the most common type is still the zinc-air button disposable battery. In the past, hearing aid batteries were produced using trace amounts of mercury to assist with conductivity and to stabilize internal components, but to be clear for the health of patients, mercury is no longer used in hearing aid batteries.

Zinc-air batteries are air-activated and factory-sealed with a sticker that allows them to remain inactive until it is removed. Once peeled from the back of the battery, oxygen will interact with the zinc in the battery and essentially activate or “turn it on.” To get the best performance from a zinc-air battery, wait about one minute after removing the sticker to fully allow the battery to activate before placing it in the hearing device. Replacing the sticker will not deactivate the battery, so once the sticker is removed, the battery will remain in an active state until the power is drained.

Zinc-air batteries remain stable for up to three years when stored in a room temperature, dry environment. Storing zinc-air batteries in the refrigerator or cold environment has no benefits and could cause condensation to form under the sticker, which could reduce the life of the battery prematurely.

On the other hand, a rechargeable hearing aid battery system, has a number of advantages over the traditional disposable battery. For one thing, after the initial purchase of a charging system, users will only need to replace their hearing aid batteries about once a year, and the cost of a rechargeable hearing aid battery is comparable to the purchase price of 100 quality traditional hearing aid batteries. Compared to other rechargeable systems currently available, silver-zinc batteries have a superior energy capacity.

Not only do you not have to worry about batteries but the quality of life you gain back that really make a rechargeable hearing aid battery systems a superior choice. The dependability that comes with a battery that charges in three to four hours and then delivers all day, continuous power means users never have to worry about their batteries failing at critical moments. Rechargeable batteries deliver a level of everyday confidence and certainty to the wearer that a disposable hearing aid battery can only provide in its first couple of days of use.

In addition, it’s also worth mentioning the environmental benefits of rechargeable hearing aid batteries. Replacing 100 batteries with a single rechargeable battery saves a tremendous amount of waste on an individual level. On a global scale, people use and then throw away around 1.5 billion hearing aid batteries every year. Plus, rechargeable batteries are 100% recyclable.

Call now and get your rechargeable hearing aid kit!

Sizes of batteries

Hearing aids come in a variety of different sizes and styles and with different power needs. Larger hearing aids require larger batteries and smaller hearing aids require smaller hearing aids, you get the point. Additionally, hearing aids for people with severe or profound hearing losses typically require more power and larger batteries.

Hearing Aid BatteriesThere are five sizes of hearing aid batteries currently available on the market. The sizes from smallest to largest are: 5, 10, 312, 13 and 675. Size 5 hearing aid batteries are rarely used. The four most common hearing aid battery sizes are all smaller than the diameter of a dime:

  • Size 10 – 5.8 mm wide by 3.6 mm high
  • Size 312 – 7.9 mm wide by 3.6 mm high
  • Size 13 – 7.9 mm wide by 5.4 mm high
  • Size 675 – 11.6 mm wide by 5.4 mm high

Because size differences may be hard to notice and difficult to remember, battery packaging is color-coded so finding and purchasing the correct ones is easier. In the event you are not sure or would simply like to double check the size of your hearing aid batteries, we at United Hearing Healthcare would love to help show and educate you on your hearing aid requirements.

  • Size 5 batteries – red label
  • Size 10 batteries – yellow label
  • Size 312 batteries – brown label (most common in the U.S.)
  • Size 13 batteries – orange label
  • Size 675 batteries – blue label

Average Hearing Aid battery life

Hearing aid batteries on average can last anywhere from five to 14 days, based on usage and daily activity. This is dependent upon the size of the battery and power needed by the hearing aid. Typically, smaller batteries have shorter battery life than larger ones.

The average lifespan of hearing aid batteries is listed:

  • Size 10 – three to seven days
  • Size 312 – three to 10 days
  • Size 13 – six to 14 days
  • Size 675 – nine to 20 days

If you are experiencing shortened battery life, there may be an issue with the hearing device or the battery itself. In this case, you should consult your user manual or contact us here at United Hearing Healthcare to make sure everything is working properly.

What’s the best hearing aid battery brand?

Today, there are many common manufacturers of hearing aid batteries like Rayovac and Energizer. However, many hearing aid manufacturers sell batteries wholesale to hearing care professionals, and the batteries may carry the brand name of that hearing aid manufacturer. At United Hearing Healthcare, we only sell batteries from your respective hearing aid manufacturer.

Another common practice is private labeling of batteries. This means the hearing care professional may purchase batteries wholesale and have them labeled with the name, address, phone number and logo associated with their office.

Regardless of the branding, nearly all hearing aid batteries are made by trusted companies that produce other types of batteries for all types of electronics.

Final Thoughts

In the past ten years of hearing aid development have been characterized by significant technological progress in the field of integrated circuits and algorithm design. However, these advances have resulted in a massive increase in the level of power consumption. That means hearing aid batteries are a very important consideration, not just for manufacturers but also hearing care professionals and consumers.

In fact, today’s hearing aid wearers actively request environmentally friendly and hassle-free battery solutions. At United Hearing Healthcare, we meet these environmentally friendly and hassle-free battery solutions head on by offering rechargeable battery solutions and continuously recycle used battery components for reuse.


To request more information about hearing aid batteries or have questions, comments or concerns, please call us at (208) 739-4093 or (208) 229-3229. If you would like additional information during non-business hours please fill out our contact us form or email us at support@unitedhearinghealthcare.com and we will get back to you promptly on our next day of business.

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