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Hearing Aid Batteries - The types & sizes available

By: Paul Harrison Updated: 11th May 2022 in: Hearing Aid Advice, Latest News, Articles
Types of Hearing Aid Batteries

Hearing Aid Batteries

Types of Hearing Aid Batteries


Powering your hearing needs

Like most technology devices, your hearing aid batteries provide power to your digital hearing aids and, therefore, assist your hearing needs every day.  Historically, these types of batteries are accessed through a small battery compartment door that you have to change every few days or weeks.  Now all hearing aid manufacturers offer rechargeable battery models within their portfolio.  

Here we talk about everything you need to know regarding hearing aid batteries.  Such as size, lifespan, storage, brands, where to buy and common questions we get asked by our patients.  We hope that this content will help you decided which battery type will benefit you most.


Hearing aid battery styles on the market

The hearing aids of today are getting smaller, more advanced and more powerful than those of the past - whether they are powered on standard batteries or rechargeable versions.  Rechargeable batteries need to be charged fairly regularly and standard batteries are disposable and need to be replaced.  Rechargeable batteries are usually charged up at night when the wearer takes them out to sleep.


What are the different hearing aid battery types?

A hearing aid uses on average about one battery per week and you need one hearing aid battery per hearing aid. Some hearing aids with very small batteries may only provide 4 days of use whereas ones with larger batteries may last up to 2 weeks. 

Historically, mercury zinc batteries were the most popular form of battery used within a hearing aid.  Now the zinc-air batteries are commonplace, as they are more eco-friendly and maintain reliable voltage.


2021's Most Popular Rechargeable Hearing Aid Brands on the Market From Manufacturers

Here are the most popular rechargeable hearing aids in the industry brought to consumers by the top hearing aid brands of today.  There are other models from other manufacturers, but these are the ones that are highly recommended by our customers and audiologists.


  • Oticon More, Opn S and Ruby hearing aids.
  • Phonak Paradise hearing aids.
  • Starkey Livio Edge AI, Livio AI and Livio hearing aids.
  • Resound ONE, Resound LiNX Quattro hearing aids.
  • Widex Moment hearing aids.


Are hearing aid batteries all the same?

No, they are all different, similar to regular household batteries you can buy various brands of hearing aid batteries and in different sizes.  Behind-the-ear (BTE) hearing aid styles historically use size 13 and 312 batteries.  Whereas, In-the-ear (ITE) hearing aids usually use size 312 or 10 batteries.  To make it easier, each size has an industry-standard colour code, which we have highlighted below.


Hearing Aid Batteries UK

What are the Main Hearing Aid Battery Sizes?

Plus colour-coding for hearing aid batteries


The four main hearing aid battery sizes are:

Hearing Aid Battery Size 10:  This is sometimes called 10A and is the smallest size of the hearing aid battery (5.8 mm x 3.6 mm). It is colour coded with a yellow sticker on the battery and usually the pack.

Hearing Aid Battery Size 312:  This is the next size up from a size 10 (7.9 mm x3.6 mm). It is colour coded with a brown sticker on the battery and usually on the pack. From the end, it looks like a size 13 battery but is half the thickness.

Hearing Aid Battery Size 13:  This is the size that most NHS hearing aids use (7.9 mm x 5.4 mm). It is colour coded with an orange sticker and on the pack as well.

Hearing Aid Battery Size 675:  This is the largest battery and is usually only used in powerful hearing aids (11.6 mm x 5.4 mm). It is colour coded with a light blue sticker on the battery and on the pack.


The average lifespan of the different sizes of hearing aid batteries are:

  • Size 10 batteries:  3-7 days
  • Size 312 batteries:  3-10 days.
  • Size 13 batteries:  6-14 days.
  • Size 675 batteries:  9-20 days.


Hearing aid battery troubleshooting


We are generalising on the above, lifespan will also depend on your usage and streaming trend but usually the smaller the battery the shorter the lifespan.  If out of the blue your hearing aid batteries life is shortened, there might be an issue with your aid.   If this happens, read your manufacturers user manual for reference and if you need extra support - contact your audiologist who will give both aids a full maintenance check and repair if needed.


Hearing Aid Batteries

Types of Hearing Aid Batteries

Common questions from consumers


Are hearing aid batteries rechargeable?

Hearing aids don’t always have to use standard batteries or disposable batteries, there are rechargeable versions available – so they can be recharged.  These are simply called rechargeable hearing aid batteries or lithium-ion batteries and pretty much all hearing aid brands have these as an option in their device ranges. 

With rechargeable hearing aid batteries, you don’t have to buy new batteries when your old ones run out of power.  You just recharge them and go!  Rechargeable batteries should last as long as the life of your hearing aids.


Can hearing aid batteries be recycled?

Most consumers choose to buy the rechargeable version of the modern hearing aids on the market, as they are more eco-friendly and more convenient.  However, those who wear hearing aids that require standard batteries need to recycle them correctly and not dispose of them with everyday rubbish. 

Most local supermarkets now have battery recycling points for the disposal of hearing aid batteries and household ones too.  If you are upgrading and looking to donate your hearing aids, is always good to remember that there are various charities that will recycle and recondition your devices.


How long do hearing aid batteries last?

So do hearing aid batteries expire?  Rechargeable batteries need to be charged fairly regularly and standard batteries are disposable and need to be replaced.  Rechargeable hearing aid batteries have a shelf life too but is generally the same as the device itself - roughly 4-5years. 

If your battery compartment in your hearing aid doesn’t have a door then it has a lithium-ion rechargeable battery inside.  This means that these batteries take about 3-4 hours to fully charge and can usually last you around 24 hours.  


What About NHS Hearing Aid Batteries?


Where can I get free NHS hearing aid batteries near me?

Are hearing aid batteries free on the NHS?  The simple answer is yes, you can get free hearing aids, free NHS hearing aid batteries and repairs from the NHS.  However, this is only the case if you have and currently wear NHS hearing aids. 

You can obtain them from your local GP or they can send them out to you in the post.  NHS hearing aids, as standard, are free of charge (on a loan basis) and currently come with a selection of free batteries.  You can also contact your local NHS Audiology Department to order more or request that they post them out to you on a monthly basis.


What is the cost of hearing aid batteries?

The price of hearing aid batteries varies on what brand you go for and sometimes what size you need.  It is important that you invest in ones that are long-lasting and high-performance - so you will ways have the confidence that they can deliver reliable power throughout your day.  On publication of this article, the average you will pay for batteries is around £2.00 for a pack of six mercury-free zinc-air batteries.


What are the most popular hearing aid battery brands?

The most popular brands are Rayovac hearing aid batteries, Duracell hearing aid batteries and Energizer.  Hearing aid manufacturers also make their own hearing aid batteries and usually provide around a months supply when you initially purchase your hearing aids.


Best hearing aid batteries

As stated above, there are some popular and reliable brands out there, in regards to hearing aid batteries.  You might want to discuss with your audiologist the type of batteries and brands of batteries that are best for you and your hearing aid device.


Where can I get free hearing aid batteries?


You can receive free hearing aid batteries from the NHS if you have NHS hearing aids.  However, if you don't you will need to purchase hearing aid batteries either online or through your audiologist.  Most manufacturers do send free hearing aid batteries when you first purchase your new hearing aids with them, but this is not the case for all in the industry.


Hearing Aid Battery

Types of Hearing Aid Batteries

How long do hearing aid batteries last?

For all generic and standard hearing aid batteries, it really depends on the type of hearing aid that needs powering and its overall capacity, how often you are wearing your hearing aids and how much you stream via Bluetooth connectivity.  This is also a similar case for rechargeable hearing aids. 

If you stream a lot you will be recharging your batteries more regularly.  But, there are some nifty and discrete charging pods out there that you can easily take out with you and charge on the go.  Some manufacturers have 'quick charge' options for when you are in need of it most and need a power boost urgently.


How do I store my disposable batteries?

Your pack of disposable Zinc-air batteries will be fine for around three years if you always store them at room temperature.  If you put your hearing aids in a fridge or in a cold place they can develop condensation under the batteries sticker within the packaging.  You are then at risk of greatly reducing the battery's life span.


Top tips for hearing aid batteries

Can I extend the life of a hearing aid battery?


Even today there is no solid evidence that you can extend non-rechargeable battery life, but the below advice will help get the most out of your hearing aid batteries.  These are:

  • Always wash your hands before changing your batteries:  Dirt and oil can be detrimental to hearing aids and can block the air pores in the battery.
  • Let them breathe:  You only have to do this for about 5 minutes after you have removed the tab from the battery.  This is a good idea because the ‘breathing’ time allows air to get to the materials inside the battery, which activates them.  After this time put them in the battery compartment.
  • Leave the door open:  When you’ve taken your hearing aids off, turn them off and open up the battery compartment door.  It reduces battery drain and helps trapped moisture escape, so the hearing aids are less likely to get damaged or the battery corrode.
  • Invest in a dehumidifier:  This will help absorb any moisture that is hidden in your hearing aid and battery.  Your battery power will be used to its full potential and it’s also a safe place to store your devices especially if you don't have a charging pod.
  • Keep them safe:  Store your batteries in a cool, dry and safe place.  Hot and wet atmospheres drain the power from batteries – even if they are in packaging.  Always keep them stored away from children.
  • Think about an upgrade:  Successive iterations of rechargeable technology were subsequently developed, each improving on the last. But the latest development, called lithium-ion technology, maybe the best yet. This game-changing technology is the first to achieve full days worth of power on one charge.  There are many reasons to take advantage of lithium-ion rechargeable hearing technology.


Types of hearing aid batteries

Types of Hearing Aid Batteries

Where can I get hearing aid batteries?

Private hearing aid batteries

Private hearing aid wearers can get hearing aid batteries from their own local audiologist in the clinic or they can post them out to you at your convenience.  A lot of people do have a standing order for batteries, which delivers hearing aids automatically when they need them. 

This seems to be a popular choice, as you don't have to remember to order then or worry that you'll suddenly run out and are left with hearing aids with no power and, therefore, no assisted hearing.  You can also source various hearing aid battery brands from online retailers.


Want are our thoughts on non-rechargeable batteries and hearing aids?

In general, our attitude towards the environment is shifting and we are slowly becoming more eco-conscious.  This is a positive leap in the right direction, as we become more sensitive to the environment with each year.  We are reacting to world problems such as climate change and making more conscious decisions in the way we purchase and dispose of certain products. 

There has been a definitive shift in the way we want to live our lives, as we take stock and look at more rechargeability options - such as hearing aids.  We believe the future to be eco-smart and thoughtful, with fewer batteries going into our landfills.  In a world where convenience is key, we don’t think the consumer attraction for this will change as portable recharging pods continue to become smaller providing handy on-the-go charging.

However, if you do have hearing aids that require hearing aid batteries we advise that you purchase replacements from your audiologist or private healthcare provider.  In reality, they go through their battery stock quick, which means you will be purchasing fresh batteries than maybe an online retailer.  

They will also give you the right advice about battery size, brands and maintenance tips - so you will always benefit from the right hearing aid battery.


Need for information about hearing aid batteries?

Call us free on 0800 567 7621 to get more support on hearing aid batteries or if you are considering upgrading your existing hearing aids and looking at rechargeable hearing aid options available on the market today - we can help.



Read Next:  Rechargeable Hearing Aids

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Paul Harrison
Hearing Aid Advisor
Unlike most national retailers we are not owned by any manufacturer, this means we can offer the full choice of all makes and models of hearing aids
This article was written by audiology expert Paul Harrison

Meet Paul Harrison, Audiology Expert & Founder of Hearing Aid UK

Managing Director & founder of Hearing Aid UK, with over 20 years of audiology experience and a member of the British Society of Hearing Aid Audiologists Council (BSHAA) between 2015-2020.

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