Hearing Aid Batteries
Most hearing aids are powered by replaceable zinc-air batteries. These batteries oxidize zinc using the oxygen that is in the air around us. Zinc-air batteries have a high energy density ratio and a long shelf life if stored unopened. This makes them perfect for meeting the power needs of hearing aids. If you have dexterity or vision issues, you may prefer the convenience of rechargeable batteries. Whether you use replaceable or rechargeable batteries, you’ll find the batteries you need at Better Hearing Care.
Types of hearing aid batteries
Different hearing aid brands use different sizes of hearing aids. Within any hearing aid brand, different styles may have different power needs. It’s not unusual for one hearing aid brand to use several different battery sizes depending on the energy needs of the device. All replaceable hearing aids should be changed on a regular basis. The most common types of hearing aid batteries are:
- Orange (#13): Good for up to 240 hours. Commonly used by behind-the-ear and in-the-ear devices.
- Brown (#312): Good for up to 175 hours. This is the smallest battery, so it powers the smallest hearing aids such as in-the-canal and completely-in-canal devices.
- Yellow (#10): Good for 80 hours. This small battery is also used by in-the-canal and completely-in-canal devices.
- Blue (#675): Lasts for up to 300 hours. This larger battery is for larger devices such as behind-the-ear devices.
Extending the life of batteries
Zinc-air batteries aren’t activated until you remove the tab. To get the longest life from your batteries, remove the tab and wait two minutes before inserting the fresh battery. Take advantage of the wait time by inspecting your hearing aids for wax that may need to be removed.
When you aren’t wearing your hearing aids, store them with the battery door open. This will also extend the life of the battery. Contrary to popular belief, storing batteries in the refrigerator will not make them last longer. Do store them away from keys, eyeglass repair tools or other devices that may damage them.
If you want the freedom from changing batteries or have vision or dexterity issues that makes handling batteries difficult, talk to your audiologist or hearing instrument specialist about rechargeable hearing aid batteries. Most manufacturers offer a rechargeable option that allows you to charge batteries overnight while you sleep.