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Hearing Aid Batteries

Hearing aid batteries are available in different sizes and colors. The size and shape variation corresponds to the different styles of hearing aids available on the market. During your hearing aid fitting, your Advanced Hearing Services professional will discuss how to open, insert, store and dispose of the hearing aid batteries. They will also tell you what type of batteries are needed for the hearing aid. 

Types of batteries

There are two types of hearing aid batteries: zinc-air and rechargeable. Zinc-air batteries were the first on the market and are the most common. These batteries are activated as soon as a factory-sealed sticker is removed from the back of the battery, exposing it to oxygen. Rechargeable batteries are newer to the market and are available in all sizes; however, not all hearing aids can take rechargeable batteries. 

Both batteries are available in four sizes: 

  • Size 10: 5.8 mm wide by 3.6 mm high
  • Size 312: 7.9 mm wide by 3.6 mm high 
  • Size 13: 7.9 mm wide by 5.4 mm high 
  • Size 675: 11.6 mm wide by 5.4 mm high 

Because the sizes can be difficult to remember, hearing aid battery manufacturers established an easy-to-remember color-coding system to make it simple for consumers to remember. 

  • Size 10 batteries: Yellow label
  • Size 312 batteries: Brown label
  • Size 13 batteries: Orange label 
  • Size 675 batteries: Blue label 

Some common types of hearing aid batteries include:

Size 13 batteries/Orange label: In-the-ear hearing aids
Size 312 batteries/Brown label: Completely-in-canal hearing aids
Size 10 batteries/Yellow label: In-the-canal and completely-in-canal hearing aids
Size 675/Blue label: Behind-the-ear hearing aids
 
Based on the size, hearing aid battery life is as follows:

  • Size 10/Yellow: 5.8 mm wide by 3.6 mm high — 80 hours
  • Size 312/Brown: 7.9 mm wide by 3.6 mm high — 175 hours
  • Size 13/Orange: 7.9 mm wide by 5.4 mm high — 240 hours
  • Size 675/Blue: 11.6 mm wide by 5.4 mm high — 300 hours

Battery care tips

  • Keep hearing aid batteries at room temperatures; avoid exposing or storing them to extreme heat or cold. Do not refrigerate.
  • Wash and dry your hands thoroughly before changing hearing aid batteries. Grease, dirt or grime could damage or corrode the battery or even the hearing aid. 
  • Keep the battery compartment of the hearing aid open at night to avoid corrosion and damage.
  • Remove dead batteries from the hearing aid immediately.
  • Turn the hearing aid off when not wearing to save battery life. Remove the battery entirely from the device if you’re not wearing it for an extended period of time.