Hearing Aid Zinc Air Battery and Size

As we all know, batteries are the power source for hearing aids to work normally. The battery size and energy capacity will be much more larger if the more higher hearing aid’s gain and sound output.And the zinc-air batteries are used for hearing aids widely.With the cathode zinc is oxidized,the oxygen in the air enters the carbon through the holes in the battery shell which is adhering to the anode.By the lasting chemical reaction,it makes a 1.4V voltage for the hearing aid working.

Normally,the size of A675 and A13 zinc air batteries are used for the behind the ear (BTE)hearing aids, the A13, A312 and A10 size zinc air batteries are used for in ear hearing aids,like the earsmate brand of ITE hearing aid G10,ITC hearing aid G16 and CIC hearing aid G11 and so on. If the energy of one battery is insufficient, it will limit the output sound pressure of the hearing aid. The actual using time of a battery is related with the type of hearing aid,its sound gain, the degree of hearing impairment, climate, and the volume tone of the hearing aid during working. Generally speaking,the battery lasting work time will be more longer if the more the bigger battery size and more less hearing loss. The batteries used in ear canal hearing aids should have the following characteristics: small size, constant voltage, reliable quality, long service life and no harm to the environment etc.. It should use the special batteries according to the type of hearing aids. And the kind of zinc-air batteries are used mostly. It should be noted when using hearing aid, the battery’s positive and negative electrodes should be inserted correctly. The small label on the battery should be torn open,and waiting for about 60 seconds, so that there will enough oxygen enter to activate electric chemical system. Once the battery is activated, it will run out slowly. When you do not wear the hearing aids, put that small label back on battery positive size and it is able to reduce energy consumption, but it can not stop the battery energy to consume completely. 

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