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Although there are many types of rechargeable hearing aids on the market, most devices still use disposable zinc-air button batteries. Because batteries are an essential and ongoing purchase for hearing aid wearers, many people want to find ways to make them last longer. In this blog, we discuss factors that affect the lifespan of a hearing aid battery, and ways to extend hearing aid battery life.

Factors that affect the lifespan of a hearing aid battery

A hearing aid battery can typically last anywhere from 3 to 22 days, depending on a few factors.

Hearing aid type

Hearing aid manufacturers often provide an estimation of battery life (in hours) along with their products. Some types of hearing aids have more advanced processing technologies, such as feedback cancellation, digital noise reduction, or wireless connectivity, which can require more battery usage. The type of hearing aid you use can have an impact on the lifespan of your battery.

Battery type

The various sizes of hearing aid batteries have different life expectancies.

  • Size 10 batteries usually have the shortest lifespan – around three to seven days.
  • The most common hearing aid batteries, size 312, typically last three to 10 days.
  • Size 13 batteries often last six to 14 days.
  • Size 675 batteries have the longest lifespan of up to 22 days.

Amount of hearing aid use

Like any battery-powered device, the more a hearing aid battery is used, the faster its power will be drained. And like we mentioned above, using some of the more advanced technologies may affect the lifespan of a hearing aid battery as well.

How can I make my hearing aid battery last longer?

Although there isn’t a way to “shut off” a zinc-air button battery, there are ways to extend battery life.

Do not remove the tab from the battery until you’re ready to use it.

extend hearing aid battery lifeZinc-air button batteries are in a dormant state until the tab is removed. Once the tab is removed, oxygen interacts with the zinc, activating the battery for use. The battery remains active until the power has been drained. Replacing the tab won’t stop or slow the power from draining, so be sure to leave the tab intact until you’re ready to use the battery.

Avoid storing batteries in extreme temperatures.

Take care not to leave your hearing aid and batteries in extreme temperatures. For example, do not leave them in the car overnight where they will be exposed to freezing cold or scorching heat. These extreme temperatures can not only damage the hearing aid and components but can quickly drain the hearing aid battery as well. Likewise, do not store your hearing aid batteries in the refrigerator. Some people mistakenly believe that this will help preserve battery life. However, this could actually allow condensation to accumulate under the sticker which could cause corrosion and reduce battery life.

Turn off your hearing aid when not in use.

Just like any other piece of technology, turning off your hearing aid when not in use will minimize battery drain. Although this will not “shut off” the battery, it will reduce the active time the battery is in use and help extend its life.

Keep your hearing aid clean to discourage condensation and corrosion.

Condensation can damage the hearing aid and cause the battery to corrode. Routinely cleaning and drying the hearing aid and components can discourage condensation. Before changing the hearing aid battery, wash your hands thoroughly to avoid corrosion.

Still Have Questions? Call Us.

Many of our patients tell us that their hearing aids have changed their lives. At Whisper Hearing Centers, our audiologists are passionate about helping patients regain their hearing and find a renewed outlook on life. Call us today to schedule an appointment. We are eager to hear from you!

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