Due to different materials, zinc air hearing aid batteries operate differently than other batteries. To use your zinc air batteries optimally, it’s important to know the battery’s characteristics.
To generate electricity, zinc (cathode) reacts with oxygen (anode). The air flows into the cell through small holes on the downside of the battery. As with every battery technology, its lifespan varies depending on the condition in which the battery is used. Panasonic zinc air batteries do have a larger capacity than other batteries of the same size (e.g. silver oxide), however.
Before inserting, wait at least 30 seconds after pulling off the seal. In colder temperatures, wait about 60 seconds. If you change your mind and not use the battery soon, reapply the same seal. Never use scotch tape or anything similar to close off airflow.
If you want to measure the remaining battery capacity, use a meter specifically designed for hearing aid batteries. An ordinary tester will not provide accurate results.