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Hearing Aid Batteries

Hearing aid market trend researchers suggest more people will be relying on hearing aids more than ever before in the next decade. Because of this, hearing aid manufacturers are developing devices that are more personalized and technologically advanced than ever before. In response to that ever-growing market, hearing aid battery manufacturers have also created innovative batteries that last longer. 

How long your hearing aid batteries will last depends on a host of factors, including the type of your hearing aid, as well as any features, like Bluetooth, you might rely on. The smaller the hearing aid/battery, the shorter the battery life will be. The larger the hearing aid/battery, the longer the battery life typically will be. During your hearing aid fitting at House of Hearing, your audiologist will cover battery information, including brand, type and maintenance. 

Battery types 

Today’s hearing aid battery market is still dominated by zinc-air batteries, though rechargeable batteries are starting to carve out their own niche.

Zinc-air batteries are activated after a factory-sealed sticker is removed from the back of the battery. Once peeled from the back, oxygen will interact with the zinc to activate it; the process typically takes one minute. 

Rechargeable batteries 

Zinc-air and rechargeable batteries are available in five different sizes: 5, 10, 312, 13 and 675. Size 5 is not very common, though the other four are frequently used in hearing aids and are all smaller than a dime: 

  • 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 have created 
a color-coding system to make it easier for consumers to remember: 

  • Size 5 batteries: Red label 
  • Size 10 batteries: Yellow label 
  • Size 312 batteries: Brown label 
  • Size 13 batteries: Orange label 
  • Size 675 batteries: Blue label 

Your House of Hearing HIS will discuss the type of hearing aid battery you will need for your hearing aid during your fitting. 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 

Extending the life of batteries 

How long the battery with last depends, as mentioned before, on two factors: the battery size and your hearing aid accessories. Based on size, hearing aid battery life is as follows. 

The larger the hearing aid battery, the longer the battery life: 

  • 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 

Buying hearing aid batteries is easy if you follow the color codes. Usage patterns of the individual will determine how frequently the battery needs to be changed. A blue battery may last one person a few weeks, yet someone else with the same battery will need to change every few days. One of the best ways to preserve battery life is by opening the battery door when the hearing aid is not in use. Storing in a cool and dry place is another way to extend the life of a hearing aid battery. When it is time to make a change, users will be notified by an associated app or by a constant beeping noise from the device. Since usage patterns are never the same, hearing aid wearers should always have extra batteries ready.