Although rechargeable batteries are now available for hearing aids, the most common hearing aid batteries are zinc-air disposable batteries. Mercury batteries have not been used in hearing aids for a long time.
Due to the fact that the on-air batteries are activated by air, the label installed on the battery by the manufacturer causes the battery to remain inactive.
As soon as the label is removed from the battery, oxygen acts on the zinc material in the battery and activates the battery. For the on-air battery to perform at its best, wait a minute after removing the label before inserting the battery into the hearing aid to fully activate the battery. Putting the label back on the battery will not stop the battery, so once the label is removed, the hearing aid battery will remain active until it is discharged.
Store the hearing aid battery in a cool, dry place. It is not recommended to store on-air batteries in the refrigerator, as they may distill the surface below the label and reduce battery life.
Hearing aid battery sizes:
Hearing aids are produced in different sizes and models. Larger hearing aids require a larger battery. Also, hearing aids for people with severe to profound hearing loss typically require more power and a larger battery.
There are five sizes of hearing aid batteries on the market. From the smallest to the largest size is 675,13,312,10,5. Size 5 is rarely used.
Because it can be difficult to remember different sizes of hearing aid batteries, the hearing aid battery pack is color-coded. This coding is done for easier preparation and purchase.
Hearing aid battery size 10 - yellow label
Hearing aid battery size 312 - brown label
Hearing aid battery size 13 - orange label
Hearing aid battery size 675 - blue label
Hearing aid battery life:
Hearing aid batteries can last anywhere from 5 to 20 days, based on 16 hours of use per day. Battery life depends on the size of the battery and the power required by the hearing aid. Smaller batteries usually have a shorter lifespan than larger batteries.
If the battery life of your hearing aid is shorter than usual, your hearing aid may have a problem. In these cases, it is best to consult your audiologist to make sure everything is working properly.
How to extend the battery life of hearing aids:
Although there are no reliable ways to increase battery life, there are some things you can do to ensure that battery power is not wasted.
When not in use, turn off the hearing aid and open the battery door completely overnight. This helps keep battery power from being wasted and causes moisture to evaporate during the day.
Always keep them in a cool, dry place for better battery performance. Hot and humid environments shorten battery life. Also, do not leave the hearing aid battery in your pocket, wallet, purse or backpack without packing, as they may come in contact with metal objects such as coins and keys, causing the hearing aid battery to short-circuit.