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245 Business Center Dr.
Pawleys Island SC 29585
Phone: (843) 979-3888

Hearing Aid Batteries

Our team at Coast Hearing Center wants you to be fully informed when it comes to every aspect of hearing aid technology, including the batteries that power your devices. The most common type of hearing aid battery is zinc-air. This type of battery is not rechargeable and must be disposed of after use, which means you will need to know what specific size you need to keep your hearing aids functioning.

There are four common sizes for hearing aid batteries. The best one for you differs based on the style, size and features of your hearing aids. Luckily, the hearing aid industry uses color codes and numbering to make it easy to buy new ones. 

A guide to hearing aid batteries

  • Brown (#312): This is the smallest battery so it is most suitable for in-the-canal (ITC) and completely-in-canal (CIC) devices. They can last three to 10 days.
  • Yellow (#10): This is another option for the hearing aid styles mentioned above, however they typically only last for three to seven days. 
  • Orange (#13): This is used for behind-the-ear (BTE) and in-the-ear (ITE) devices and can go for six to 14 days without needing to be replaced. 
  • Blue (#675): This is the highest capacity battery and lasts from nine to 20 days. But it can only be used in the bigger hearing aid styles like BTE.

How can I make my batteries last longer?

  • Let the battery rest for three to five minutes before placing it in your hearing aid after removing the tab. This time of “activation” allows air to enter and activate the materials inside the battery.
  • Switch it off or open the battery door to reduce battery drain when you’re not wearing your hearing aid.
  • If you are not using the hearing aid for a prolonged period of time, remove the battery completely.
  • To prevent depletion of battery power and reducing battery life, prevent storage at extreme temperatures.

Contrary to popular opinion, refrigeration storage of batteries does not prolong battery life and may even reduce their efficiency due to moisture exposure. Through contact with coins or keys, damage can occur and battery life can also be reduced. Keeping your batteries in their original package or a battery case is critical.

How do I know when I should change batteries?

You’ll hear a ping, buzz or sound when your batteries run out of power. This is the signal that the batteries need to be changed. When you hear the alert, be prepared to switch batteries promptly. Because this doesn’t always occur at home, it’s a good idea to keep a spare set of batteries in your bag or pocket. When sounds are distorted or you have to turn up the volume more than normal, this could be an indication that you need to switch your batteries.