Siemens SP - Manual (Page 26)

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SP
So-called zinc-air batteries are
used today almost exclusively
in hearing instruments to
minimize environmental
damage. These batteries
require oxygen for operation,
which they absorb from the
air. The battery is activated as
soon as the protective foil is pulled off and is used up even
if you do not use your hearing instrument.
You should always pull off the protective foil only if you
actually use the battery. Also, do not leave the batteries in
your hearing instruments if you do not use them over a longer
period. The batteries can leak and damage the instruments.
The batteries keep for from a few days up to several weeks
according to the way they are used. You can recognize when
a change of batteries becomes necessary, because your
hearing instruments become noticeably quieter towards the
end of the battery’s life. Then it is time for new batteries. Two
warning tones sound once per minute, indicating that you
must insert a new battery.
Your hearing instrument specialist can switch off the warning
tones if required.
Zinc-air batteries which are almost completely used up show
the following behaviour: After switching on the instruments
they function completely normally, but then rapidly become
quieter. The more the battery is used up, the faster the gain
falls off. You must then replace such batteries by new ones.
Handling batteries Battery changing
Inserting the battery
Important! Make sure to note the
polarity of the battery!
If the battery is inserted incorrectly,
the battery compartment can be
closed only with considerable
force. This will damage the
instrument.
Closing the battery
compartment
Close the battery compartment by
pressing from below with your
finger tip.
The instrument is switched on.
Up to the first stop = the
instrument is then switched off
Completely open = to change
the battery open the battery
compartment completely by
applying more force
Removing the battery
Open the battery compartment
as shown in the figure.
Normally the battery drops out
when the battery compartment is
completely open.
Should this not be the case, you
can lightly tap the instrument or
push the battery out with a pencil
as shown in the picture.
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