9. Storage and maintenance
The service life of the devices depends on careful use.
Important:
• Remove the batteries from the parent unit if the unit is not in use
for an extended period.
• You will get the maximum capacity from your battery if you
run down the battery at least once every 6 months. To do this,
disconnect the device from the mains and run the battery down
through normal use. Then, fully charge the battery up again.
• The maximum battery capacity can only be reached after it has
been charged several times and is dependent on many factors
(battery state, ambient temperature, means and frequency of
charging, etc.).
• Protect the devices from knocks, damp, dust, chemicals, drastic
changes in temperature, electromagnetic fields and nearby
sources of heat (ovens, heaters).
• If dirty, wipe the device with a soft, dry cloth.
• Use only a dry cloth to clean the device. Do not use any
abrasive cleaning products.
12