I understand that worldwide, there is a ban on Mercury Oxide
batteries. For hearing aids the switch is to Zinc Air type.
The holes behind Zinc air batteries are to allow air to interact with
the zinc inside the batteries. However, in humid climate, the holes
are often blocked by prespirations and moisture. This caused the
batteries to stop discharging and as a result hearing aids like
Phonak Super Front Push-Pull series of hearing aids do not function
well with this type of batteries.
Do anyone out there experience this problem and what other alternative
type of batteries can be used. Silver oxide is out as they are too
Name Lawrence Tan, Aud. Tech; CSHI, Singapore
E-mail lawtan at pacific.net.sg
ICQ UIN 1443716