Everything You Need to Know About Hearing Aid Batteries

Your hearing aids require a steady power supply in order to work properly, because even subtle changes in power output can affect performance, clarity, and volume control. Different hearing aids require different types of batteries — based on the size and power requirements of the hearing aid — to work properly. There are many variables that determine how long your battery will power your hearing aids.

A standard zinc-air battery lasts anywhere from three to 22 days, depending on the type of hearing device, the capacity of the battery, and the amount of power we are asking the device to produce. The smallest hearing aid batteries, used for 12 to 16 hours per day, may need to be changed every three or four days.

When storing batteries, keep them at normal room temperature (not refrigerated). Prior to changing batteries, wash your hands thoroughly to remove grease and dirt, which may drain the battery more quickly or dirty the inside of your hearing aid. When the battery dies, it should be removed immediately. A completely discharged battery may swell and become difficult to remove from the small device.
 

How Do I Change My Batteries?

There are a few ways to know when to change batteries. Some hearing aids will emit a small beeping sound when the battery is low, while some will speak to the user, stating that a change of batteries is needed. Hearing aids that don’t emit warnings typically worsen in sound quality, become distorted, or simply die altogether. The hearing aids may become more quiet before the batteries die — an indication that it’s time to change them.

Note: If a change of batteries does not alleviate this problem, the device may be damaged, and it should be looked at by a hearing care provider.
 

To insert or replace batteries:

  1. Open battery door using nail grip.
  2. Remove old battery (if necessary).
  3. Remove new battery from package, and pull protective tab from battery. Let the battery rest for 5 minutes before placing battery into compartment.
  4. Align “+” sign on flat side of battery with “+” sign on battery door.
  5. When battery is secure, close door.

How-To Videos

Different Types of Batteries

There are four main sizes of batteries, each with a specific color-coded package: size 10 (yellow), size 13 (orange), size 312 (brown), and size 675 (blue). The battery size you need is typically based on the size and style of your hearing aid.

Standard hearing aid batteries are zinc-air, which are activated when exposed to air, so it is very important to keep them sealed in their packages prior to use. Never open packages to move batteries to a single container; keep the packages sealed until the batteries must be used in the hearing aids, or you may end up with a dead battery. Don’t buy batteries if the seal is broken.
 

Battery Tips:

  1. Once the tab is removed from the battery, it takes approximately 5 minutes before the battery is activated and the battery compartment can be closed.
  2. Do not force the battery door shut, as it may result in damage to the hearing aid or a broken battery compartment. If the door does not close correctly, check to see if the battery is correctly inserted.
  3. Do not force the battery door open too far, as it may result in damage.
  4. Dispose of used batteries immediately in a trash receptacle. Used batteries can harm children or pets if ingested.
  5. Use of a hearing aid multicleaning tool with a magnetic end may be helpful in handling the batteries.

Frequently Asked Questions

How much do hearing aid batteries cost?
The average cost of a battery will be around 80 cents per battery. Depending on the technology you choose, a supply of batteries can come with it that covers from one to three years of use. Some technology also gives you the option of being rechargeable. Those batteries can cost up to $25 per battery but only need to be replaced once a year. Your audiologist can explain the options and help you find what best fits your needs.
How often do I have to change my hearing aid batteries?
How often you change your hearing aid batteries will depend mostly on two things: the style of hearing aid you use and how often you use it. Many of the smaller units — the invisible units, for instance — require smaller batteries that have less power. Using these units for most hours of the day might yield only three to five days of use per set of batteries.