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 upon the type of hearing aid, the capacity of the battery, and the amount of hearing aid use throughout each day. The smallest hearing aid batteries, used for 12 to 16 hours per day, may need to be changed every three or four days, while the largest hearing aid batteries used for only a couple hours each day may go several weeks without needing to be changed.

To minimize battery drain, turn off the hearing aid when it’s not in use. Opening the battery door is also an option, and a good way to dry out accumulated moisture. But if the hearing aids won’t be used for an extended period of time (overnight, for instance), removing the battery entirely is the best method.

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. Most hearing aids will emit a beep tone when the battery is low, indicating that a change of batteries is needed. Batteries near the end of their life may not provide clear sound quality or maintain streaming connections. If problems continue after batteries have been replaced, you should contact your hearing care provider for service.

To insert or replace batteries:

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


Different Types of Batteries

There are two types of batteries, Zinc Air (4 sizes) and rechargeable (size 312). Batteries are always included with your purchase and are provided for the entire length of your warranty period. If not in warranty, the price is currently $6 for a pack of 6 batteries.

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.

Frequently Asked Questions

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.

Batteries for larger styles, however, like behind-the-ear units, can last for weeks if used for only a handful of hours each day. Wearers of these units can typically expect their batteries to last for five to seven days if used regularly.

How much do hearing aid batteries cost?
At Audicare, we include all the batteries you will need for your instruments for the entire length of your warranty, so you may not actually have to pay for batteries.

If your hearing aids are not in warranty, a 6 pack of batteries is $6.00, and 18 pack of batteries is $18. Rechargeable battery systems are now available for newer hearing instruments.