Batteries play a very important role in maintaining the hearing aid life expectancy. The life expectancy of a hearing aid battery mainly depends on its-
- How much the machine drains the battery?
- For how long the hearing aid is worn?
For increasing the lifespan of hearing aids, you need to understand your device parts and components. Among all the components or accessories that keep your ear machine in the best condition, hearing aid batteries are the essential purchase for the hearing aid users.
To find the right compatible batteries for your hearing aid, you need to know the hearing aid battery types, size, battery life, brands and the list goes on.
Which batteries are compatible with my hearing aid?
It is not compulsory that every hearing battery type meet the criteria for your given hearing machine. Hearing aid manufactures has produced various types of hearing aid batteries depending on the need of their weavers.
Types of Hearing aid Battery
For most of the hearing aid users, everyday choice for hearing aid batteries are the button cell batteries, which is a type of micro batteries. Microbatteries are the small, flat, round shape which is like a customary button.
Among all the rechargeable batteries, Zinc batteries are the most common type of disposable battery. Previously hearing batteries were made using mercury, to provide help in the conductivity and also stabilize the hearing device internal parts, but today mercury is not used in hearing aid batteries.
Made from Varta, power one hearing aid Zinc-air hearing aid batteries are manufactured in the world’s largest and most advanced hearing aid battery plant located Ellwangen, Germany. Well known for its quality and reliability, they are extremely long lasting and comfortable.
Zinc-air batteries are ideal for today’s digital hearing aids due to its high energy density as well as an almost flat drain curve. This means that the hearing machines can perform at a consistent level throughout the lifetime of the battery. With a protective tab to keep the batteries in an “inactive state”, you can be sure that the batteries you get are in the best possible condition.
As zinc-air batteries are air-activated, a factory-sealed sticker 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 “turn it on.” To get the best performance from a zinc-air battery, wait about one minute after removing the sticker to fully 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 and in dry environment. Storing zinc-air batteries in the refrigerator has no benefits and could cause condensation to form under the sticker, which could reduce battery life prematurely.
Hearing aid battery comparision chart
|Dimensions (W*H)||5.6 mm * 3.6 mm||7.9 mm * 5.4 mm||7.9 mm * 3.6 mm||11.6 mm * 5.4 mm|
|Typical uses||Mini RITE and CIC hearing aids||BTE and ITE hearing aids||Mini BTE, RITE, and ITC hearing aids|
|Average lifespan||3-7 days||6- 14 days||3- 10 days||9-20 days|
|Rayovac Loud’n Clear||L10ZA||L13ZA||L312ZA||L675ZA||675CP|
|Rayovac Extra||5AE||10 AE||13 AE||312AE||675AE|
|Rayovac ProLine||5A||10A||13 A||312A||675A|
Sizes of batteries
There are basically five sizes of hearing aid battery made for the specific size of hearing devices with different power needs.
- Last the longest,
- Supply the most power,
- Only fits the larger devices.
- Only fit the smallest devices,
- have the shorter lifespan.
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 :
- 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
The Size 10 batteries are mostly suitable for ITC (In the Canal) and CIC (Completely-In-Canal) types of hearing aids. The color yellow represents them. They are the smallest and the least powerful of the hearing aid batteries. Most significant size of hearing aid battery with a regular battery life of 80 hours.
Size 10 hearing device battery take the position or replace the below-listed models –
10DS, 10HP, 10HPX,10A, 10AE, 230, A10, AC10, AC10E, 10UP, 10SA, B20PA, DA10, AC10EZ, B0104, ME10Z, MS10A, DA10N, L10ZA, PR536, PR70, R10ZA, PR536, PR70, R10ZA, V10, V10HP,PR70, R10ZA, PR70, R10ZA,
All the world’s leading zinc-air battery manufacturers offer size 10 battery –
|Power one battery ( pack of 60 batteries)||Rs. 1280|
|Duracell battery ( pack of 60 batteries)||Rs. 2,928.00|
|Siemens hearing aid battery ( 36 pieces)||Rs. 790|
|Widex battery (pack of 54 batteries)||Rs. 1188.26|
|Signia Zink Air ( pack of 60 cells)||Rs. 1220|
|Energizer EZ Turn & Lock Size 10 ( pack of 16 batteries)||Rs. 2001.00|
|iCellTech batteries ( pack of 60 batteries)||Rs. 2,899.00|
These brands also offer mercury-free hearing aid battery formulations.
Size 13 is the third largest. They come with an impressive battery life of 240 hours. Denoted by color orange, they are the best fit for ITE (In the Ear) and BTE (Behind The Ear) forms of hearing aids.
Size 13 hearing aid batteries take the position or replace the below-listed models –
13A, 13AE, 13HPX, 13SA, 13DS, 13HP, AC13, AC13E, 13UP A13, B0134 DA13H, AC13EZ B26PA, ME8Z PR13, DA13N L13ZA, PR48 R13ZA, V13HP W13ZA ZA13, RS13 S13A V13.
All the world’s leading zinc-air battery manufacturers offer size 13 battery –
|Power one battery ( pack of 60 batteries)||Rs. 1,280|
|Duracell battery ( pack of 60 batteries)||Rs. 3,518.00|
|Siemens hearing aid battery ( 36 pieces)||Rs. 839|
|Widex battery (pack of 54 batteries)||Rs.1188|
|Signia Zink Air ( pack of 60 cells)||Rs.1220|
|Energizer EZ Turn & Lock Size 13 ( pack of 24 batteries)||Rs. 2,737.00|
|iCellTech batteries ( pack of 60 batteries)||Rs. 1988|
Size 312 hearing aid batteries are the second largest and also second most powerful of all. represented by the color brown. They give a battery life of about 175 hours. It has to be noted that their size is smaller than size 10 and size 13 batteries and are mainly used for In-The-Canal (ITC) and In-The-Ear (ITE) hearing aids.
Size 312 hearing device battery for most of the brands and card labelscross-referencing models are:
B347PA, DA312H, PR41, B3124, DA312N, 312HP,AC312EZ, AC312, 312HPX, ME7Z, PR312H, 312UP, 312DS,312AE, 312A, P312, L312ZA, PR312, V312, R312ZA, ZA312, W312ZA, A312, V312, V312HP.
All the world’s leading zinc-air battery manufacturers offer size 312 battery –
|Power one battery ( 10 packs of 6 each)||Rs.1,250.00|
|Duracell battery ( pack of 60 batteries)||Rs. 1,400|
|Siemens hearing aid battery ( 36 pieces)||Rs. 923|
|Widex battery (pack of 54 batteries)||Rs. 1,188.26|
|Signia Zink Air ( pack of 60 cells)||Rs.1,274.00|
|Energizer EZ Turn & Lock Size 312 ( pack of 24 batteries)||Rs. 1,240.95|
|iCellTech batteries ( pack of 60 batteries)||Rs. 2165|
The largest Size 675 is made for the powerful hearing devices. Size 675 zinc-air battery is used in used in extremely powerful devices which are made to provide the topmost amplification possible. Denoted by the color blue, they are visibly larger in size and thus have a larger battery life. They last approximately for around 2 weeks when it is worn throughout the day. Size 675 batteries are recommended for bone anchored hearing aids and extremely powerful Behind-the-Ear (BTE) hearing aids and in cochlear implants.
Size 675 hearing aid batteries take the position or replace the below-listed models-
675A, 675AE,675HPX, 675SA,675DS, 675HP, AC675, AC675E,675UP A675, B900PA DA675H,AC675EZ B6754, PR675 R675ZA S675A V675, V675HP W675ZA ZA675,DA675N L675ZA ME9Z PR44.
All the world’s leading zinc-air battery manufacturers offer size 675 battery-
|Power one battery ( pack of 60 batteries)||Rs. 1,230.00|
|Duracell battery ( pack of 60 batteries)||Rs. 3,352.00|
|Siemens hearing aid battery ( 36 pieces)||Rs. 1000|
|Widex battery (pack of 54 batteries)||Rs. 1,188.26|
|Signia Zink Air ( pack of 60 cells)||Rs. 1,215|
|Energizer EZ Turn & Lock Size 675 ( pack of 24 batteries)||Rs. 2,001|
|iCellTech batteries ( pack of 60 batteries)||Rs. 2,365|
Hearing aid last depending on their capacity. The more the capacity, the more the hearing device battery last. According to the survey of around 500 hearing aid users, you can have a better idea about the battery life. In this survey, hearing device users were asked about their hearing aid style, the type of brand they use and in case they use streaming technology.
Your hearing device battery life is affected by some of the variables such as –
- Size and type of the battery
- Size and type of hearing aid
- The technology level of the machine
- Time duration or number of hours, you are using the battery
- Gain control
- Sound input
- Signal intensity
- Discharge voltage level
- Dry-aid kit usage
- Temperature and humidity
- Environmental factors.
To know how long your battery last, you need to first calculate the battery life formula. The simple equation for estimating battery life –
Battery life (hours) = battery mAh rating/battery current.
Hearing Aid Battery Drain
All the manufacturers have given all the required information about their hearing device battery usage. In the survey mentioned above, as an example, it is shown that Resound datasheet for the Resound LiNX2 LS61 provided information about the hearing device which uses 312 battery drains 1.3 milli-Amps (mA) from the hearing device battery, which when tested in “test mode” through the ANSI S3.22 standard.
Using the battery life formula, estimated the battery life of size 312 hearing aid which has a capacity of 145 milli-Amp-hours (mAh) which is 111 hours.
In the survey, the average receiver-in-canal (RIC) hearing machine user reports total use- time per battery of 82 hours. An expected 6.3 days of battery life is calculated by considering the hearing aid user report time of 13 hours per day and which when compared with Resound’s datasheet. It is found that the datasheet suggests 8.5 days per battery usage by the user.
So, there is a difference between the survey estimates by the hearing device and the hearing aid manufacturer datasheet.
The problem with calculating these estimates
There is a difference because it is difficult to find the estimates using the battery current drain. Usually, hearing machines are kept in test mode while calculating the current drain which results in disabling the advanced processing technologies such as digital noise reduction, wireless connectivity, and feedback cancellation.
What about estimates provided by hearing aid manufacturers?
You should keep caution while reading the manufacturers estimates because the manufacturers often overestimate the battery life and as there are other factors involved which are mentioned above such as hearing device configuration or lifestyle of the user. It is very difficult to calculate the exact battery life until you are itself using the hearing device.
Also, some of the hearing aid manufacturer’s estimates are not standardized. As, some of the manufacturers usually use a higher capacity (mAh) battery, which increases the number in the estimated figure when compared to the other manufacturers, who use a standard capacity battery of the similar size.
Hearing Aid Battery Power
The survey estimated the hearing aid battery power based on the hearing device user experiences.
How Long Do Hearing Aid Batteries Last, On Average?
As mentioned above hearing aid last depending on their capacity. A small hearing device of size 10 battery has 93 mAh capacity whereas the powerful size 675 shows 627 mAh capacity.
The table shows the Average hours of hearing device use by battery size.
|Size||Average hours of use|
How Long Do Hearing Aid Batteries Last With Audio Streaming?
Audio streaming consumes a lot of hearing aid battery. Although according to the survey the difference was not that huge. Might be some of the respondents included telecoil audio streaming or some kind of reduced battery life audio steaming.
The table shows Average hours of use without and with audio steaming depending on battery size.
|Size||No steaming||With audio streaming|
How to extend the life of a hearing aid battery?
There is no step by step way in order to extend the battery life. Although, there are tips which will ensure that your hearing device will last longer.
Accidentally swallowed a battery? Call the National Battery Ingestion Hotline: 202-625-3333
Some of the care and maintenance practices are given below to extend your hearing battery life. Follow these best practices to keep your batteries well-maintained and make them last longer –
- For keeping your hearing aid last longer, keep your batteries sealed until the time you really need to put them to use.
- Try to make use of the oldest package of hearing batteries first.
- Be cautious that after removal of the label, they tend to lose power and get exhausted easily in 4 to 4.5 weeks, it’s better to put them to use right after the removal of the label.
- Batteries when placed in a cool climate last for a longer period of time. But please make sure you don’t store them in very cool or hot places, any of that leads to the draining of the battery’s life.
- At the time of removing the hearing aid battery, remove the tab first and leave it for a few seconds before inserting in your hearing device.
- Ensure that the changing of your hearing aid batteries is done in an uncluttered place having a soft surface like a table with a tablecloth is perfect.
- Before replacing the battery, wash your hands first.
- In case you are not going to use your batteries for a longer period of time, then remove your batteries from your hearing aid entirely. As keeping them inside your hearing device, can lead to corrosion and damage from trapped moisture.
- Try to use a hearing aid dehumidifier. As you know, these dehumidifiers and dry storage kits help in protecting your battery and hearing aid both.
Hearing aid battery tester
Hearing aid tester helps you in detecting whether their any life left in your hearing device or not.
There are several types of the pocket-sized tester are available in the market. There are basic 2 types of hearing aid battery tester –
- Battery Tester
- Digital hearing aid tester
How to use a hearing device tester?
- First, peel off the sticker and then wait for a few seconds for getting an accurate reading.
- On the tester there is plus(+) sign facing up, then drop the battery in and push your battery with your finger right up to the top. Your battery should go the top and stay there but if ur battery goes partially up or comes down then this means that your battery is done, this is the time to throw it away.
In case you don’t have a hearing aid battery tester with you and you want to check your battery then put your battery in your other hearing device. And if your battery is working in the other hearing aid then, this means that your battery is in working condition but your hearing aid is not. If the battery is not working in either of the two hearing aids, this means you need to throw your battery.
Where to purchase hearing aid batteries?
You can purchase your battery from electronic stores, groceries, retail stores or online. It is very important to evaluate the hearing aid problem quickly and restore its functioning. You can purchase your battery from hearing care provider also. We at Hearing Solutions are proud to offer hearing aid batteries online at a low cost, that are simple to replace and provide long-term, the dependable functioning of hearing aids.