The most popular batteries for hearing aids – zinc-air batteries. These batteries work thanks to its unique design, inside of it is condensed the oxygen from the environment. Due to this, the energy that condenses inside the battery – allows it to work several times longer than alkaline or lithium ion batteries.
With zinc air batteries, you can expect from the device the clean sound, normal (stable) work of all its systems, and a much longer period of operation of the battery itself.
However, the most important advantage of this type of batteries is that they do not leak as for example, alkaline batteries. When you remove the protective film, the battery begins to run.
Once you have removed the protective sticker – wipe the residual adhesive and leave the battery on the table for 2 minutes before you insert it into the unit. Sticker protects the battery from the prematurely activating.
Since the sticker is attached to the battery with the help of special adhesive, this material rather actively responds to temperature change. In this connection, the battery must not to overheat or supercool. Optimum temperature for the storage of the battery is not more than 24°C and not less than 5°C.
Batteries should be stored in containers in a dark, cool place, and do not wear them in a pocket or purse. Do not let the battery get into the hands of a child, as a child can eat it.
Battery life depends on several factors:
First, what type of battery is used. The bigger battery, the more powerful is it. For batteries №10, the average life is from 7 to 9 days. For batteries № 312 service life is 10-12 days. For batteries №13 and № 675 service life is from 12 to 14 days and more.
Second, the strengthening of a hearing aid. The greater the gain, the more energy is consumed from the battery.
Thirdly, the sound field in which the device is used. Simply put, if you are using the device only in a quiet environment, your battery will serve longer.
Fourth, a very important is time of the year. The higher the temperature and humidity at the time of operation, the lower the “lifetime” of battery. That is, in the winter, the heating season, when the maximum operating temperature changes to 50 ° C and humidity up to 100%, the battery life is reduced by approximately 15-20%.
If you did not insert a battery into the device it is discharged in 3-4 weeks after the removal of the protective tape. That is why you must follow the rules of storage of spare batteries.