Hearing Aid Batteries

Batteries are an essential and ongoing purchase for hearing aid wearers. The type of battery you will need will depend on the style of your hearing aid.

Hearing aid batteries are typically bought in packs of 60 since the cost per battery is cheaper. You should expect to pay approximately £15.99 for 60 batteries.

Hearing aid batteries can be bought from high street retail stores, hearing aid providers, electronic shops and online. If you got you hearing aid on the NHS, you will receive free batteries for the entire time that you have the hearing aid.

Types Of Hearing Aid Batteries

All hearing aids require batteries in order to operate. The batteries you will need will depend on the type of hearing aid you have. Different types of hearing aids require different sized batteries. The most common sized hearing aid batteries are 675, 13, 312 and 10, which are all colour coded to make it easier to identify their size.

Hearing aid batteries are ‘zinc-air’ operated. This is because in order to activate them, you need to remove their colour-coded factory-sealed sticker to allow oxygen to interact with the battery to turn it on. The sticker cannot be put back onto the battery to turn it off. Once it is removed, the battery remains turned on until its power is drained.

Larger hearing aids such as behind-the-ear (BTE) models require larger batteries, whereas more miniature hearing aids such as completely-in-the-canal (CIC) models need smaller batteries. This table shows which battery size, dimension and colour you will need for your particular hearing aid type.

Size Dimension Colour Hearing Aid Type
675 11.6mm x 5.4mm Blue
  • Behind-the-ear (BTE)
13 7.9mm x 5.4mm Orange
  • Behind-the-ear (BTE)
  • In-the-ear (ITE)
312 7.9mm x 3.6mm Brown
  • Behind-the-ear (BTE)
  • Receiver in-the-ear (RITE)
  • In-the-canal (ITC)
10 5.8mm x 3.6mm Yellow
  • Receiver in-the-ear (RITE)
  • Completely in-the-canal (CIC)

Whilst this table shows the most common hearing aid battery sizes, you can also get size 5 batteries which are identified with a red label. These batteries are used much less frequently in modern hearing aids however, although some do still require this sized battery.

You should always seek advice from your hearing aid specialist on what size battery your hearing aid requires. Since hearing aid batteries are an essential and ongoing purchase, buying the wrong ones could be a costly mistake.

How Long Do Hearing Aid Batteries Last?

Hearing aid batteries do not last as long as batteries in other electronic devices due to the complex processing taking place within the hearing aid which causes them to consume a large amount of power.

The lifespan of a hearing aid battery typically ranges from 3-22 days, based on 16-hours of wear a day. The size of the battery and the amount of power used by the hearing aid will impact how long a battery will last.

The table below shows the average lifespan of the most frequently used battery sizes. It is important to keep in mind that Bluetooth hearing aids tend to use more power than typical hearing aids, so their batteries will need replacing more often than normal.

Size Average Lifespan Based On 16-Hour Days Of Wear
675 9-22 days
13 6-14 days
312 3-10 days
10 3-7 days

As a general rule, larger batteries have a longer lifespan than smaller batteries. If you wear a hearing aid which requires a size 675 battery, you won’t have to change your battery as regularly as a hearing aid that fits a size 10 battery.

How Much Do Hearing Aid Batteries Cost?

Below you can see what you should expect to pay for hearing aid batteries, based on the most popular sized packs of 6 and 60.

Size Average Price For 6 Average Price For 60
675 £1.79 £15.99
13 £1.79 £15.99
312 £1.79 £15.99
10 £1.79 £15.99

It’s most cost effective to buy your hearing aid batteries in a larger pack to decrease their individual price. It’s worth remembering when you are budgeting for your hearing aid batteries that the smaller they are, the more frequently they will need to be replaced in comparison to larger batteries.

You should ask your hearing aid provider about the expected lifespan of your batteries during your consultation so you can work out how many you will need over the course of a month. This will help you budget for battery costs.

How Can I Extend The Lifespan Of My Hearing Aid Batteries?

Unfortunately there is no way to extend the lifespan of your hearing aid batteries, but you can make sure that no power is wasted by following these simple tips:

  • Always turn off your hearing aids when they are not being used and open the battery compartment door to allow any build-up of moisture to evaporate.

  • Store your batteries at room temperature, and keep them away from humid environments as this can shorten the battery life.

  • Don’t put your hearing aid batteries in contact with any other metal objects like your house keys or loose change as there is a chance they could short-circuit the batteries.

Unused hearing aid batteries will typically remain charged for up to three years if kept in a dry environment at room temperature.

Does It Matter What Brand Of Hearing Aid Battery I Buy?

When buying hearing aid batteries, the brand does not matter as all of the sizes and colours are standardised. Some brands of hearing aid batteries are more popular than others however, including Rayovac and Energizer.

The most important thing when buying hearing aid batteries is to get the right size for your hearing aid. This is information you can obtain from your hearing care specialist.

Where Can I Buy Hearing Aid Batteries?

Hearing aid batteries are very easy to obtain. They can be bought from high street retail stores, hearing aid providers, chemists, supermarkets, electronic shops and online. You should look out for special deals on hearing aid batteries in order to get the best price.

audiologist shaking a customer's hand

It might be worthwhile buying your batteries from a hearing aid provider as they go through their stock of batteries regularly, meaning they tend to provide their customers with batteries which are ‘fresher’ than ones purchased elsewhere.

Some providers also supply their customers with free batteries as part of their aftercare programme, which could save you a considerable amount of money in the long term. You should ask your hearing care specialist if this is something that they offer.

If you got your hearing aids free on the NHS, they will also cover the cost of your replacement batteries for the entire time that you have your hearing aid.

Why Is My Hearing Aid Not Working After Inserting A New Battery?

If your new battery is not working after being inserted into your hearing aid, there could be a few reasons as to why. Here are four common issues to check:

  1. The battery might have been inserted too quickly after removing the factory-sealed sticker. It’s worth waiting a minute once peeling off the sticker to allow the battery time to activate before fitting it into your hearing aid.

  2. The battery is dead. Very rarely batteries can be bought faulty. Alternatively, make sure you have replaced a new battery and not mixed it up with an old, used one.

  3. Dented battery. This damage to the battery’s surface could affect the contact it has with the hearing aid.

  4. The battery is the wrong size. Always make sure you have the correct battery size for your type of hearing aid.

  5. The battery has not been stored in the correct conditions. Make sure you keep your batteries at room temperature, away from any moisture or metal.

If problems persist and your hearing aid batteries continue to not operate, you should contact your hearing aid provider for further advice.