How to make hearing aid batteries last longer

Hearing aid batteries are small, but they play a big role in your everyday hearing. If a battery runs out sooner than expected, it can be frustrating — especially when you are at work, travelling, attending an appointment or spending time with family.

Battery life depends on several things: battery size, hearing aid model, how many hours you wear your hearing aids, how much you stream sound and how the batteries are stored. With a few simple habits, you can get more reliable use from your batteries and avoid unnecessary waste.

What affects hearing aid battery life?

Not all hearing aid batteries last the same amount of time. Smaller batteries usually have less capacity than larger batteries, and modern hearing aids may use more power if they include features such as Bluetooth streaming, noise reduction, directional microphones or stronger amplification.

Your daily routine also matters. A person who wears hearing aids all day and streams phone calls, music or TV sound will normally use more battery power than someone who wears hearing aids for fewer hours and does not stream often.

Battery size guide

Disposable hearing aid batteries are usually colour coded by size. The most common sizes are 10, 312, 13 and 675. Each size fits specific hearing aid models, so you should always use the battery size recommended for your hearing aid.

Size 10 hearing aid batteries

Size 10 batteries are among the smallest hearing aid batteries and are often used in smaller, discreet hearing aids. Because they are small, they usually have a shorter battery life than larger sizes.

They are a good choice for compact hearing aids, but users may need to replace them more often, especially with long daily use or frequent streaming.

Find size 10 hearing aid batteries

Size 312 hearing aid batteries

Size 312 batteries are very common in many modern hearing aids. They offer a balance between compact size and reliable daily power, which makes them suitable for many behind-the-ear and receiver-in-canal hearing aids.

Battery life depends on the hearing aid model and daily use, but streaming and advanced sound processing can make size 312 batteries drain faster.

Find size 312 hearing aid batteries

Size 13 hearing aid batteries

Size 13 batteries are larger than size 10 and 312 batteries and are often used in hearing aids that need more power or longer daily use. They are common in many behind-the-ear hearing aids.

Because they have more capacity, size 13 batteries can often support longer use before replacement, depending on the hearing aid and listening habits.

Find size 13 hearing aid batteries

Size 675 hearing aid batteries

Size 675 batteries are the largest of the common disposable hearing aid battery sizes. They are often used in larger or more powerful hearing aids that require more energy.

They are designed for hearing aids with higher power demands and may last longer than smaller batteries, but battery life still depends on use, amplification needs and device features.

Find size 675 hearing aid batteries

Simple habits that help batteries last longer

You cannot make a small battery last forever, but you can avoid habits that shorten battery life unnecessarily. Good storage, correct handling and a few simple routines can help you get more consistent performance from each battery.

1. Remove the battery sticker only when you are ready to use it

Most disposable hearing aid batteries are zinc-air batteries. They are activated when the sticker is removed and air reaches the battery. Once the sticker is removed, the battery begins to activate, even if it is not placed in the hearing aid right away.

For best results, only remove the sticker when you are ready to insert the battery into your hearing aid.

2. Let the battery breathe before inserting it

After removing the sticker, wait a short moment before placing the battery into the hearing aid. This gives air time to activate the battery properly and can help support more reliable performance.

You do not need to wait a long time, but avoiding immediate insertion can be a useful habit with zinc-air batteries.

3. Store batteries at room temperature

Keep hearing aid batteries in a cool, dry place at normal room temperature. Avoid storing them in very hot, cold or humid places, such as the bathroom, car, window sill or refrigerator.

Heat, moisture and extreme temperatures can affect battery performance and shelf life.

4. Keep batteries in their original packaging

Store unused batteries in their original packaging until you need them. This helps protect them from contact with metal objects, moisture and accidental activation.

Do not carry loose batteries in a pocket, wallet or bag together with keys, coins or other metal objects.

5. Open the battery drawer when the hearing aid is not in use

If your hearing aid uses disposable batteries, open the battery drawer when you take the hearing aid out for the night. This turns the hearing aid off and can help reduce unnecessary battery drain.

Opening the battery drawer also allows air to circulate and can help reduce moisture inside the hearing aid.

6. Reduce unnecessary streaming

Bluetooth streaming can use more battery power than normal listening. Phone calls, music, podcasts and TV streaming may all make batteries drain faster.

You do not need to avoid streaming, but it helps to know that frequent streaming can shorten battery life. If your batteries run out quickly, consider whether your streaming habits have changed.

7. Keep hearing aids clean and dry

Moisture, dirt and earwax can affect hearing aid performance and may make the device work less efficiently. Clean your hearing aids regularly and store them safely overnight.

If moisture is a recurring issue, use a drying cup or drying box as part of your routine. This supports the hearing aid itself, even though it does not recharge disposable batteries.

8. Check the expiry date

Hearing aid batteries have a shelf life. Old batteries may not perform as well as fresh batteries, even if the sticker is still on.

When buying batteries, check the expiry date and use older packs first if you have several at home.

Why do my hearing aid batteries run out quickly?

If your batteries drain faster than expected, there may be a simple explanation. Battery life can change depending on hearing aid use, sound environments and device features.

Common reasons for shorter battery life

You stream phone calls, TV or music often.
You wear your hearing aids for many hours every day.
Your hearing aids use powerful amplification.
You spend time in noisy environments where the hearing aids work harder.
The batteries are old or have been stored incorrectly.
The battery drawer was left closed while the hearing aid was not in use.
The hearing aid has moisture or needs cleaning.

If battery life suddenly becomes much shorter than usual, and the same thing happens with several new batteries, the hearing aid may need to be checked.

Battery care when travelling

When travelling, always bring more batteries than you think you need. Changes in climate, long days, streaming and travel delays can all increase battery use.

Keep batteries in their original packaging and store them in your hand luggage or travel bag where they are protected from heat, moisture and metal objects. It is also useful to bring a small cleaning cloth and hearing aid case.

Battery safety tips

Hearing aid batteries are small and can be dangerous if swallowed. Always keep batteries away from children and pets. Store used and unused batteries safely, and dispose of used batteries according to local recycling guidance.

Never place batteries in your mouth, and do not leave loose batteries on tables, bedside cabinets or in bags where children or pets can reach them.

Quick battery checklist

Use the correct battery size for your hearing aid.
Remove the sticker only when you are ready to use the battery.
Wait briefly before inserting a new zinc-air battery.
Store batteries at room temperature in their original packaging.
Open the battery drawer when the hearing aid is not in use.
Keep hearing aids clean and dry.
Check expiry dates before using older batteries.
Keep spare batteries with you when leaving home.

Find the right hearing aid batteries

Choose the same battery size that your hearing aid already uses. If you are unsure, check the old battery, the hearing aid manual or the colour code on the battery packaging.

FAQ about hearing aid battery life

How long do hearing aid batteries last?

Battery life depends on the battery size, hearing aid model, daily wearing time, amplification needs and streaming use. Smaller batteries usually need changing more often than larger batteries.

Why do hearing aid batteries need a sticker?

Many disposable hearing aid batteries are zinc-air batteries. The sticker blocks air from entering the battery. When the sticker is removed, air activates the battery.

Should I remove the sticker before I need the battery?

No. Only remove the sticker when you are ready to use the battery. Once the sticker is removed, the battery begins to activate.

How should I store the batteries?

It is best to store hearing aid batteries at normal room temperature in a dry place. Avoid heat, cold and moisture.

Does Bluetooth streaming use more battery?

Yes, streaming phone calls, music or TV sound can use more power and may shorten battery life.

Should I open the battery drawer at night?

Yes, if you use disposable batteries. Opening the battery drawer turns the hearing aid off and helps reduce unnecessary battery drain.

Why does one battery last longer than another?

Battery life can vary because of daily use, streaming, storage conditions, battery age, hearing aid settings and the listening environment.

What should I do if batteries suddenly last much less than usual?

Try batteries from a fresh pack, clean and dry the hearing aid, and check that the battery drawer closes correctly. If the problem continues, the hearing aid may need professional inspection.