Batteries for hearing aids - life, storage and handling

The different types of hearing aid batteries

Hearing aids operate at a voltage of 1.4 volts. Hearing aid batteries are button cells, which belong to the so-called micro-batteries. How long do hearing aid batteries last? Of course, this depends primarily on how long they are used. Regardless, there are different types of hearing aid batteries that vary in capacity and size. The higher the capacity, the longer the battery life. Which battery type is the right one can be found in the operating instructions of the hearing aids.

Hearing aid batteries are usually available in packs of six, and for better orientation they are often in coloured, round plastic dispensers. The color indicates at a glance what type of battery it is. KIND uses the following markings:

• ZL1: Type 675 (blue)
• ZL2: Type 13 (orange)
• ZL3: Type 312 (brown)
• ZL4: type 10 (yellow)

Type 675 has the highest capacity 650 mAh (milliampere hours) and the largest dimensions, type 10 has the lowest capacity and the smallest dimensions. In current hearing aids, type ZL3 batteries are most commonly used, followed by ZL2. ZL4 batteries fit in small in-the-ear hearing aids. Very large hearing aids are becoming less common, so fewer ZL1 batteries are needed.

Store in a cool and dry place, do not remove protective foil early

Important: To ensure that batteries for hearing aids retain their life, they should be stored in a dark, cool and dry environment. Under no circumstances should they be stored in the refrigerator. In addition, the colored protective foils should only be removed from the batteries shortly before inserting them into the hearing aids. Our tip: Leave the hearing aid battery for about a minute after removing the protective film and only then insert it into your hearing aid. Do not wait too long, however, because the batteries start to discharge when the foil is removed.