Leica Q Instructions Manual page 243

For the battery
Rechargeable lithium ion batteries generate power through internal
chemical reactions. These reactions are also influenced by the
ambient temperature and humidity. Very high and low temperatu-
res shorten the operating time and service life of the batteries.
• Always remove the battery if you will not be using the camera for
a long period of time, as otherwise it could become totally
discharged after several weeks, i.e. its voltage drops to a very
low level.
• Lithium ion batteries should only be stored partly charged, i.e.
not when fully discharged or fully charged (see the correspon-
ding display). For very long storage periods, the battery should
be charged for around 15 minutes twice a year to prevent total
discharge.
• Always ensure that the battery contacts are clean and freely
accessible. Whilst lithium ion batteries are proofed against short
circuits, they should still be protected against contact with metal
objects such as paper clips or jewelry. A short-circuited battery
can get very hot and cause severe burns.
• For the battery to charge, it must have a temperature of between
10°C and 30°C (otherwise the charger will not turn on or off
again).
• If a battery is dropped, check the casing and the contacts
immediately for any damage. Using a damaged battery can
damage the camera.
• Batteries have a limited service life.
• Send defective batteries to an appropriate collection point for
proper recycling.
• Never throw batteries into a fire as this can cause them to
explode.
For the charger
• If the charger is used in the vicinity of radio receivers, it can
interfere with the reception; make sure there is a distance of at
least 1m/3ft between the devices.
• When the charger is in use, it can make a noise (buzzing) – this
is quite normal and is not a malfunction.
• When it is not in use, disconnect the charger from the mains as
otherwise it uses a certain (very small) amount of power even
when no battery is inserted.
• Always keep the charger contacts clean, and never short circuit
them.
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