Hearing Aid Batteries

Today’s digital hearing aids need a powerful source of energy to provide you an optimum hearing experience. This power comes from disposable batteries or rechargeable batteries. Whether you use disposable batteries or charge your batteries, don’t forget that your devices work their best when they have optimum power. So, keep a supply of fresh batteries on hand or keep your batteries charged on a regular basis.

Types of hearing aid batteries used today

There are two main types of hearing aid batteries used today: disposable and rechargeable. Disposable batteries use a unique zinc ion technology to create power. Their charge is generated when the battery’s zinc ions interact with the oxygen in the air we breathe. Depending on the size of the battery and the type and number of functions you use, these batteries need to be replaced about every seven to ten days. Rechargeable batteries most commonly make use of lithium-ion technology. Depending on your hearing aid and your wearing practices, a single charge may last more than one day. During your hearing aid fitting and programming appointment, the audiologist at Country Roads Audiology & Hearing Aid Center will show you how to change batteries or recharge your batteries.

Disposable hearing aid battery sizes 

Disposable hearing aid batteries are available in a handful of sizes. Buying the correct size hearing aid battery is easy. In addition to a common number, each size battery is color-coded. No matter what brand you buy, just remember the color battery you need. The numbers and colors of hearing aid batteries are as follows:

  • Orange (#13): In-the-ear (ITE) and behind-the-ear (BTE) hearing aids typically use orange batteries. These batteries provide about 240 hours of use. 
  • Yellow (#10): In-the-canal (ITC) devices are generally powered by yellow batteries. These small batteries provide about 80 hours of use.
  • Blue (#675): The blue battery is the largest battery and is used in the largest hearing aids. You can expect a blue battery to last about 300 hours.
  • Brown (#312): The smallest hearing aids, like completely in canal (CIC), use the smallest battery. The brown battery provides about 175 hours of use.

Many hearing aids that use rechargeable batteries can function using disposable batteries in a pinch. Talk to the audiologist about backup batteries during your fitting appointment and always keep fresh batteries on hand. 

Getting the longest life from your batteries

Follow these tips to get the longest life from your batteries:

  • Wash your hands before touching the batteries. This protects your hearing aid batteries and the devices themselves from the oils and moisture on your hands. 
  • When you aren’t wearing your devices, store them with the battery door open and in the “off” position. This exposure to air helps keep the battery charged and the device dry so your battery will last longer. If you have a drying box, store your hearing aids in this box. Keeping batteries dry helps them last longer. 
  • Don’t store hearing aids or batteries in the bathroom where they are exposed to steam from hot showers. 
  • Take the batteries completely out of your hearing aids if you won’t be wearing them for several days. 
  • Always store batteries at room temperature and not in the refrigerator. Moisture from the refrigerator can actually shorten battery life. 
  • Remember to fully activate zinc ion batteries before installation. Pull the tab to expose the battery to air and then wait between three and five minutes before installing the battery.