Zinc-air batteries are the most common batteries for hearing aids. All zinc-air hearing aid batteries have a factory-sealed sticker on them, and they remain inactive until the sticker is removed.

Let The Battery “Charge” After Activation

When the sticker is peeled off, oxygen in the air interacts with the zinc to activate the battery. The battery should be exposed to the air for a full minute after the sticker is removed, before you put it in the hearing aid to let it fully charge. Once the sticker is removed and the battery is activated, the battery will remain active until it’s drained. It can’t be deactivated by re-attaching the sticker.

Choosing The Right Battery for Your Hearing Aid

The law requires manufacturers to code their battery size by color – so when you are looking for a new battery, you only have to look for your color, and you’ll get the right size.

The four most common hearing aid battery sizes are:

Size Color Avg Lifespan Typical Uses
10 Yellow 3-7 days Mini RTE and CIC
312 Brown 3-10 days Mini BTE, RITE and ITC
13 Orange 6-14 days BTE and ITE
675 Blue 9-20 days BTE and ITE


How Long Does a Hearing Aid Battery Last?

Based on the average use of 16 hours a day, most hearing aid batteries last between 5-14 days, but ultimately, the life expectancy for hearing aid batteries depends on several factors, including:

  • Your degree of hearing loss
  • The size of the batteries
  • How long the hearing aids are worn
  • Environmental conditions
  • How old the batteries are

If you are experiencing shorter-than-usual battery life, it’s possible that there is a problem with the hearing aid. If this happens, visit your audiologist to make sure that your hearing aids are in good condition.

How To Extend The Life of Your Hearing Aid Battery

  • Turn hearing aids off and leave the door to the battery compartment open when you’re not using your hearing aids
  • Take the batteries out overnight and leave them in a dehumidifying container (like the Dry & Store)
  • Always store batteries at room temperature, away from heat, cold and humidity. Don’t put them in the refrigerator or the glove compartment
  • Don’t carry batteries loose in your pockets or purse – coming into contact with other metals such as coins or keys can result in short-circuits

What Causes Hearing Aid Batteries To Drain Quickly?

  • Lots of features on the hearing aid. More features use up more power
  • Larger hearing aids use more power and drain the battery quicker
  • Hard work. The harder the hearing aid has to work for you – whether from more severely impaired hearing or loud environments – the shorter the battery life will be

When Should You Change Your Hearing Aid Batteries?

  • If the sound becomes distorted
  • If you have to turn up the volume more than usual
  • Some hearing aids beep when the battery is low. Change the battery immediately when you hear the beeping

Always carry an extra set of hearing aid batteries. Battery power can be lost suddenly, and you don’t want to get caught without a spare battery.

Once you’re fitted with the best hearing aids for your hearing condition, your hearing aid batteries are a key component to maintaining good hearing. Use fresh batteries, keep them cool and dry, and visit your audiologist regularly to make sure both the hearing aids and batteries are working at their best.

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Dr. Ana Anzola, CCC-A, FAAA, ABA Principal

Dr. Anzola received her Doctorate degree in Audiology (AuD) from the Arizona School of Health Sciences, and her Master’s Degree in Audiology and her Bachelor's Degree in Speech Language Pathology and Audiology from Towson University. She has been a fellow of the American Academy of Audiology (AAA) since 1995, board-certified by the American Board of Audiology (ABA), and certified by the American Speech-Language-Hearing Association (ASHA).