Aside from cleaning hearing aids, replacing its battery is the most frequent and common form of maintenance. The industry has standardized all batteries into four numbered and color coded identifiers. The four different battery sizes are: 10 yellow, 13 orange, 312 brown and 675 blue. They are manufactured by numerous companies and found in retailers nationwide. |
Batteries are designed to last for approximately 5 to 16 days. This time period is based off of a 16 hour per day cycle. Batteries are one of the most common causes of device failure or sound distortion. Most hearing aids come standard with a low battery warning. They emit a low sounding chirp intermittently until the unit shuts off. There are a number of reasons that batteries last, or don't last, longer than they are rated. Understanding these factors provides insight into troubleshooting problems with hearing aids.
As mentioned above, most battery life is measured in days and those days are based off of 16 hours of use. That being said, if an individual were to use his or her device for merely 6 hours per day, their batteries would last longer, and require less frequent changing. That being said, it may help to begin viewing the battery lifespan in terms of hours. Another factor that affects battery life is the amount of hearing deficit an individual suffers from. The more amplification that is required, the more energy is required from the battery at one time. This translates into a shorter battery life.
The device itself will play a significant factor in lifespan as well. The more features and options available and in use, the faster the battery will degrade. The environment also plays a major role in determining the battery's longevity. Colder temperatures will cause reduced voltage and shorter life. Humidity is essential for the zinc and oxygen powered batteries used in hearing aids. When they dry out too much, their lifespan is reduced. Factors that contribute to this are: long periods of time indoors, especially during winter months, wood burning stoves, and long term storage in dry climates. Altitude can also contribute to a shorter battery lifespan. Areas of higher altitude have lower concentrations of oxygen. This causes a decrease in voltage, which, like the cold, will reduce lifespan. Conversely, the longevity will increase in oxygen rich environments, like those found in the lower altitudes. Considering the number of dynamic and unavoidable factors that contribute to hearing aid battery depletion, it's probably a good idea to carry spare batteries with you.
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