For Hearing Aid Users
I have got a new hearing aid! Why does the battery seem to go flat so fast?
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For new users of hearing aids, the short battery life does come as a surprise. Most of us are familiar with the performance of AA and AAA batteries. Naturally, we expect similar performance from zinc-air hearing aid batteries. Unforunately, this is not the case - read on to find out why.
There are four common sizes of hearing aid batteries: 10, 13, 312 and 675.
The table to the right shows the ‘capacity’ for each size. Capacity is an indicator of the amount power a battery can contain and is measured in ‘milli amp hours’ (or mAh). Tthe higher the capacity the more power a battery has.
You will see from the table size 675 has the highest capacity. Conversely, size 10 has the least amount capacity.
Lets assume your old hearing aid used size 675 batteries and your new hearing aid uses size 13 batteries. The smaller capacity of the size 13 battery means there is less power than the size 675 battery, therefore the battery life is likely to be shorter.
Check out our range of hearing aid batteries!
* Capacity for AA and AAA batteries are based on the Sanyo NiMH rechargeable battery. Capacity for hearing aid batteries are based on the Power One hearing aid battery.
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| Size |
Capacity* |
| AA |
2700mAh |
| AAA |
1000mAh |
| 675 |
650mAh |
| 13 |
300mAh |
| 312 |
170mAh |
| 10 |
95mAh |
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How long will my battery last in my hearing aid?.
Unfortunately, there is no easy answer regarding the life of the battery because there are many variables which affect battery life including:
- the age and type of hearing aid;
- how many hours per day you use your hearing aid;
- the amount and type of environmental noise;
- the program and volume settings;
- the size and brand of the battery;
- the level of humidity;
- how you store the batteries .
If you are not using your hearing aid for a few weeks, we recommend removing the battery from your hearing aid to minimise the risk of damage from battery leaks or corrosion by old batteries.
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How do I know which size battery is for my hearing aid?
Click here for information on which battery to use for your hearing aid or cochlear implant.
If you are still unsure which battery to use, you can post us a used battery or packaging and we will advise you which battery you require. If you choose to do this, please include your name and contact details.
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What do the colour tabs and codes mean?
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Different hearing aids use different size batteries. The standard sizes are 10, 13, 312 and 675.
The colour-coded packaging and pull-off tabs on the battery identify the sizes. This makes it easier for you to choose the correct battery.
Alternatively, you can locate the size number in a corner on the face of the packaging.
See colour chart to the right to identify your battery size! |
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| Size |
Colour |
| 675 |
Blue |
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| 13 |
Orange |
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| 312 |
Brown |
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| 10 |
Yellow |
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Check out our range of hearing aid batteries!
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I have just been fitted with a hearing aid. Should I try the Hearing Aid Battery Trial Pack?
We would recommend you stick to one brand of battery for the first six to nine months before trying out other brands of batteries.
During the first few months of using your hearing aid, the program (or settings) will most likely be adjusted several times. Each time the settings are adjusted the power requirements change - this makes it difficult to compare battery performance.
Once the adjustments to the settings become less frequent, you may wish to try the Hearing Aid Battery Trial Pack.
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How do I know when the batteries goes flat?
When the batteries have run flat, the hearing aid will simply turn itself off.
Most new hearing aids are fitted with an alert signal - just before the battery goes flat, the hearing aid user will hear a series of beeps. This warning alert is set by your audiologist at the time of programming your hearing aid. If you do not hear the warning signal, please check with your audiologist if your hearing aid has this feature.
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