Hearing Aid Batteries

Reliable hearing aid batteries can make the difference between crystal-clear hearing and an unreliable earpiece. We pride ourselves on offering a wide selection of batteries in various sizes, including 10, 13, 312, and 675. We only stock trusted brands such as Phonak and Rayovac, ensuring you receive the highest quality products.


What sizes of hearing aid batteries are available?

There are four main sizes of hearing aid batteries, colour-coded and numbered for easy identification. Manufacturers are also developing even smaller batteries that retain the same power.

  • Blue 675: The largest hearing aid battery, providing the greatest amount of power.
  • Orange 13: Commonly used in smaller behind-the-ear hearing aids and larger in-the-ear models.
  • Brown 312: Similar circumference as the 13 but half the depth, making it slightly fiddlier. Suitable for smaller behind-the-ear aids.
  • Yellow 10: The smallest battery, designed for in-the-canal hearing aids.

Hearing aid batteries usually last between 5 to 10 days, depending on the size:

  • Blue Size 675: 7-10 days
  • Orange Size 13: 7-10 days
  • Brown Size 312: 5-7 days
  • Yellow Size 10: 7-10 days

Hearing aid batteries typically use zinc air technology, which oxidises zinc with oxygen from the air. This ensures they are safe and efficient to use.

Most batteries have a peel-off back. Once removed, place the battery carefully inside the hearing aid. Allow the battery to sit for a minute after removing the peel to maximise its oxygen reserve, which can extend battery life.

After you’ve placed the battery in your hearing aid, it begins to work immediately, powering your device. Letting the battery sit for a minute after peeling off the back ensures optimal performance.

Store hearing aid batteries at room temperature, avoiding damp areas and extreme temperatures. Proper storage maximises their lifespan and maintains their quality.

Most rechargeable batteries use Li-ion (Lithium Ion) technology, known for its efficiency and long-term power storage. These batteries are increasingly being integrated directly into hearing aids, providing protection against water damage and eliminating the need for manual battery changes.

Having the battery built into the hearing aid prevents water damage and simplifies usage, as there’s no need to remove or insert batteries manually.

Hearing aid dryers, such as drying boxes, help extend the lifespan of both your hearing aids and their batteries by removing moisture. This is particularly important if you live in a humid environment or are prone to perspiration.