BERNAFON Nr.312 hearing aid batteries, 6 pcs.

Most of the hearing aid batteries available on the market are zinc-air technology batteries, in which the air in the atmosphere is used as the active ingredient for energy production. If you remove the protective film from the hearing aid battery, you will see small openings. Air enters the battery through these openings and the chemical generation of the necessary electrical energy begins. Remember – this process is irreversible and cannot be stopped simply by sticking the film back on. It will no longer serve as a protector.