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 (more than a few days, 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. 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 evaluated by a hearing care provider.

To insert or replace batteries:

  1. Unlock battery compartment (if your hearing aid has a battery compartment lock) by sliding small switch on battery door to right until it clicks and colored mark disappears.
  2. Open battery door using nail grip.
  3. Remove old battery (if necessary).
  4. Remove new battery from package, and pull protective tab from battery. Let the battery rest for a minimum of 2 minutes before placing battery into compartment.
  5. Align “+” sign on flat side of battery with “+” sign on battery door.
  6. When battery is secure, close door.
  7. To lock battery compartment (if your hearing aid has a battery compartment lock), slide small switch on battery door to left until it clicks and colored mark is visible.


Different Types of Batteries

There are four main sizes of batteries, each with a specific color-coded package: size 10 (yellow), size 312 (brown), size 13 (orange) 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. Zinc-air batteries have a 4 year expiry from the date of manufacture. The closer the day is to the expiry date the more likely the battery does not operate your hearing aid for as many hours. Also, today’s zinc-air batteries are eco-friendly and manufactured without mercury. All batteries are not created equal. Discuss with your hearing care professional your hearing aid battery options.


VFusion™ Rechargeable Hearing Aid Batteries

Most newer hearing systems allow for use of rechargeable batteries, like the VFusion Rechargeable Battery System. Rechargeable batteries offer the benefit of being long lasting; typically, you’ll have to buy them only twice a year.

You’ll get up to 18 hours of battery life each day from the VFusion system, so there is little risk of your hearing system faltering when you need it most: during business meetings, at a show with friends, or in the middle of dinner with your family. VFusion delivers up to three times as much power as other rechargeable systems, meaning the system will power the highest-gain devices throughout the day.

Battery chargers are largely universal. Most rechargeable systems recharge via a universal USB, so they can be charged on a computer, through a wall adapter, or in the car. And unlike other rechargeable batteries, like lithium-ion, the ZPower silver-zinc rechargeable batteries that come with the VFusion system don’t need the same safeguards to protect against overheating, rupturing, and exploding.

The batteries are water based, so they’re chemically safer and can safely travel with you in environments with atmospheric changes (like airplanes) while maintaining stability. They’re also more environmentally friendly than almost any other battery on the market: 95 percent of the silver and zinc used can be recycled to make brand-new batteries, with no loss of quality. Each battery has an expected life span of up to six months.

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. Used batteries can harm children or pets if ingested. It is recommended you store used batteries in a sealed container and take them to a recycler or take them to your hearing care professional for recycling.
  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?
Depending upon hearing aid style and use, total battery cost may be as little as $30 per year, or as much as $150 per year.
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.

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