Hearing aid battery
What is a hearing aid?
People with impaired hearing use hearing aids to support their hearing ability. Long time back, people used to use "Ear Trumpets", a sort of cone which amplified sound. This adaptation was also called "Ear Horn". A more sophisticated version of hearing aid would consist of a desk top amplifier, and into it, a microphone and earphone would be integrated. This was much more effective than the cones, but this equipment was not portable.
With the advent of small electronic device that can be plugged in your ear, hearing aids became more acceptable amongst the people who needed such an aid. When this type of hearing aid first came into the market, it had a rectangular battery pack, and this battery pack was connected with the ear piece by a thin wire. This battery pack was held in the pocket of the person using the hearing aid. In this way hearing aid became portable. Even though hearing aid became portable, there were the disadvantages of carrying the battery separately, and were susceptible to interferences. This portability was eventually made more portable by doing away with the battery pack, and a more inconspicuous sort of model came into the market using small zinc-air batteries inserted in the unit itself.
What is a hearing aid battery?
The present day hearing aids use zinc-air batteries. The batteries, when new, come with a factory sealed sticker, and as you peel it off the battery gets activated when it comes in contact with air. The oxygen in the air reacts with the zinc in the battery and the battery gets activated. In most of the hearing aids available today, you will not find a switch to turn it off or on. If you are not going to use your hearing aid for a long period of time, you may open the battery compartment and take off the battery in order to turn the device off. If stored in a cool and dry place, the zinc-air battery can last up to 3 years. Then again it should not be stored in a place where condensation would take place on the metallic surface, when there is a chance that battery may get completely discharged.
How can I tell what size I need?
You would need to peel of the sticker when you buy a new battery. Pulling it off will activate your battery. The colors correspond to the sizes of the batteries that you are using, with all having the same standard colors. At times you may find letters appearing after the colors and these could be disregarded. It is important that you take a note of the colors and the corresponding size of the battery as mentioned below:
- Size 5: RED
- Size 10 (or 230): YELLOW
- Size 13: ORANGE
- Size 312: BROWN
- Size 675: BLUE
How long will the battery last before I have to change it?
The life of a hearing aid battery depends upon the usage of the hearing aid device. Some of the hearing aids available in the market uses up more power, with the result that the battery life run out faster. Compared to an analog hearing aid, the digital one would require more power because of the complex circuitry inside. Hearing aid batteries usually last from 5 to 7 days. These being cheap, can easily be affordable. If your battery runs out quicker, there could be something wrong with your hearing aid, and it would need to be checked.
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