Leica M Operating Instructions Manual page 190

EN
• In case of noise, discoloration, deformation, overheating or
leaking fluid, the battery must be removed from the camera or
charger immediately and replaced. Continued use of the battery
results in a risk of overheating, which can cause fire and/or
explosion.
• In case of leaking fluid or a smell of burning, keep the battery
away from sources of heat. Leaked fluid can catch fire!
• A safety valve in the battery guarantees that any excess
pressure caused by improper handling is discharged safely.
• Batteries have only a limited service life. We recommend
replacing them after around four years.
• Take damaged batteries to a collection point to ensure correct
recycling.
• The batteries must not be exposed to heat, sunlight, humidity or
moisture for long periods. Likewise, the batteries may not be
placed in a microwave oven or a high pressure container as this
results in a risk of fire or explosion.
186
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 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 in it.
• Always keep the charger contacts clean, and never short circuit
them.
• The car charging cable supplied
– may only be operated with 12V electrical systems,
– may never be connected while the charger is connected to the
mains.