Hearing Aid Batteries Archives - Peninsula Hearing Services

Can Hearing Be Restored?

Can Hearing Be Restored With so many medical advances in the 21st century, individuals with hearing loss yearn to know…can hearing be restored?  It is tempting to feel left-behind if you are hearing impaired.  The weight loss industry is rife with a dizzying number of commercials, books and advertisements Read more

Severity of Tinnitus Related to Emotional Sounds

Severity of Tinnitus Related to Emotional Sounds A research study out of the University of Illinois has suggested that the severity of tinnitus related to emotional sounds.  Not only do those with severe tinnitus process emotions differenty in the brain compared to those who report the severe tinnitus but also Read more

Rechargeable Hearing Aids

Rechargeable Hearing Aids Wouldn’t it be great if instead of replacing batteries every week in hearing devices, there were rechargeable hearing aids ?  Well, that is exactly what is available today.While hearing aid technology markets advances and exciting new features and capabilities every year that more often than fall Read more

Hearing Loss a risk factor for Dementia

Hearing Loss a risk factor for Dementia A new report  by the Lancet Commissions on Dementia Prevention, Intervention and Care suggests hearing loss a risk factor for dementia. The good news is the report suggests that managing hearing loss may be one way  to help lower the risk of Read more

Rechargeable Hearing Aids

Peninsula Hearing Services Hearing Aid Batteries

Rechargeable Hearing Aids

Wouldn’t it be great if instead of replacing batteries every week in hearing devices, there were rechargeable hearing aids ?  Well, that is exactly what is available today.

While hearing aid technology markets advances and exciting new features and capabilities every year that more often than fall short of expectations, there has been innovation in one area, and that’s rechargeable hearing aids. If not having to buy disposable batteries frequently and handling those tiny batteries each day sounds appealing, rechargeable hearing aids might be just what you need.

ZPower Rechargeable System

In the last few years, a company named ZPower is a game-changing creator of the ZPower Rechargeable System. This innovative and award-winning system turns compatible hearing aids into rechargeable hearing aids. The system can be ordered at the time of a new hearing aid purchase or, if the hearing aids are compatible, it can be retrofit on existing devices. This system is ideal to those individuals who struggle with the following pitfalls with traditional hearing device batteries:

  • Dexterity issues
  • Vision loss
  • Environmentally conscious and want to reduce the number of disposable batteries that end up in landfills.
  • Inconvenient to repeatedly purchase batteries every several months

Rechargeable hearing aids are convenient, easy to use and environmentally-friendly.


The downside is that the ZPower rechargeable hearing aid system is not exactly cheap.  The cost of the unit is approximately $200-$300, and the rechargeable battery, which needs to be replaced every year, is approximately $50 per hearing device. Compare this to traditional hearing aid batteries which can be purchased for as little as 25 cents apiece, resulting in an annual cost of $50-$75 for a pair of devices.

Learn More

To learn more about the ZPower system for rechargeable hearing aids, visit their website or contact Peninsula Hearing Services and see if they are right for you.



Reference:  Edited from an article by Brande Plotnick, MS, MBA, managing editor, Healthy HearingAugust 17, 201

Extending Hearing Aid Battery Life

Peninsula Hearing Services Hearing Aid Batteries
Extending Hearing Aid Battery Life

Hearing aid battery life is approximately 7 days. Historically, this depends on several factors:

  • The size of the hearing aid device and size of the battery. The smallest hearing devices use a size 10 battery, which is the smallest sized battery available. The largest hearing devices for severe to profound hearing impairments, use a size 375 battery which can last 10-14 days.
  • The degree of hearing loss. If a hearing device is adjusted to the maximum levels, it will drain the battery faster.
  • The environment the user is in while wearing the hearing device. Hearing devices process and analyze tens of thousands of incoming sounds in milliseconds. This requires a lot of power from the battery. If a user is in an environment where a lot of sound and noise is present as opposed to one who is a home alone without any extraneous noise, that battery while drain more quickly.
  • Squealing. If a hearing device is not fitting in the ear appropriately, sound can leak out and squeal, a term in the hearing industry named feedback. Feedback significantly reduces hearing aid battery life.
  • Poor storage. If a hearing aid battery is stored in an environment that is much too cold (refrigerator) or too warm (near a heater or in the sun), the chemical processes inside the battery can become altered, leading to poorer battery life.


Although hearing aid batteries are typically not expensive (they can be purchased online or at big box warehouses like Costco for as little as 25 cents/battery when purchased in larger lots sizes of 100 batteries or more), it is inconvenient to have to change them approximately once a week.

Recent Discovery

Although some hearing aid manufacturers have recommended users wait 5 minutes after pulling off the sticker of hearing aid batteries to make them last longer for several years now, no one has studied the effects of this recommendation….until now. 8th grade student Ethan Manuell, a hearing aid user since the age of 4, studied the effect wait time has on the performance of hearing aid batteries for a school science project. What he found was that the optimum time between pulling the sticker off a hearing aid battery and actually using it in hearing aids was 5 minutes, which lead to batteries lasting 2-3 days longer. If one uses the average of 7 days for the life of a hearing aid battery, waiting the extra 5 minutes after pulling off the sticker could improve hearing aid battery life by as much as 43%.

Because of his discovery that led to extending hearing aid battery life, Ethan has won several awards for his experiment, including earning a US Naval Science Award.

How Long Do Hearing Aid Batteries Last?

Peninsula Hearing Services Hearing Aid Batteries

How Long Do Hearing Aid Batteries Last?

During a hearing device consultation with a hearing healthcare professional, most consumers want to know:    “How long do hearing aid batteries last?”

The answer: “Typically between 3 and 12 days.”

Many are initially taken aback.  They believed they would  last longer, like batteries in a wristwatch, flashlight  or automobile.  After all, those batteries only need to be changed every few years or so.  To help you better understand the lifespan of hearing aid batteries, let’s examine the underlying factors.

Battery Function

The demand of a hearing aid battery is very high. It requires optimal, consistent power. Digital hearing devices are complex, and complexity usually means that they take more energy to power. These batteries run millions of calculations per second which drains the battery.  And they are running 16 hours a day, all day, every day.  If you leave your flashlight or car headlights on for more  than 4 hours, the battery will die.  From that perspective, hearing aid batteries are a technological marvel.

Size of Battery

Hearing aid batteries are tiny compared to batteries in flashlights or automobiles, so it is not easy to pack a lot of energy into such small a space.  Within the 3 to 12 day range, the type of hearing device you have will further define the expected battery life. There are three main type of batteries for the three main types of hearing devices: small, medium, and large. Refer to table 1 for specific ranges by battery size.

Battery Costs

One reason consumers inquire about battery life is to better understand the costs associated with managing a hearing device. So let’s look at battery prices. The cost of hearing aid batteries is significantly lower than your typical AA, AAA or D  batteries. Price ranges we have found are from 23 cents each (from Costco) to $1.00, from your local drugstore.  Compared to AA or AAA batteries, hearing device batteries are reasonably priced.

Table 1

Battery SizeBattery Life (in days)*Estimated Cost per Year**
Small3 to 4$94
Medium6 to 8$46
Large10 to 12$30

*Based on hearing device being on 16 hours per day.

**Based on two hearing devices and an average price per device of 45 cents per battery.

Other Factors

Other factors that also affect the lifespan, include

  • Degree of hearing loss: As the severity of hearing loss increases, more amplification is required. This causes an increase in the current, which reduces battery life. Therefore, the more severe hearing loss a person has, the shorter the battery life.
  • Hearing environment- The noise around you can affect battery life. A battery will drain less in a library versus a crowded restaurant
  • Storage of the batteries ( by the store selling the batteries and by the consumer after purchasing the batteries. It’s important to store them properly. Hearing aid batteries can also run out more quickly than they should if you leave them in places where they will be exposed to hot  or cold temperatures.


Damaged Batteries

It is not uncommon to purchase  a ” bad” package of batteries.  This most likely occurs due to either a manufacturing or storage issue. So if you put “new” batteries in and your hearing device doesn’t work, try another set from a different package.

In conclusion, while hearing aid batteries may seem to have a short life,  remember how hard the battery is working and how small the battery is. Also, when you factor in the price per battery, the effective cost is much more reasonable when compared to traditional batteries used in flashlights and other electronics.