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Always switch the device off and disconnect the charger before 
removing the battery.
Unplug the charger from the electrical plug and the device when 
not in use. Do not leave a fully charged battery connected to a 
charger, since overcharging may shorten its lifetime. If left unused, 
a fully charged battery will lose its charge over time.
Always try to keep the battery between 15°C and 25°C (59°F and 
77°F). Extreme temperatures reduce the capacity and lifetime of 
the battery. A device with a hot or cold battery may not work 
temporarily. Battery performance is particularly limited in 
temperatures well below freezing. 
Do not short-circuit the battery. Accidental short-circuiting can 
occur when a metallic object such as a coin, clip, or pen causes 
direct connection of the positive (+) and negative (-) terminals of 
the battery. (These look like metal strips on the battery.) This 
might happen, for example, when you carry a spare battery in 
your pocket or purse. Short-circuiting the terminals may damage 
the battery or the connecting object.
Do not dispose of batteries in a fire as they may explode. Batteries 
may also explode if damaged. Dispose of batteries according to 
local regulations. Please recycle when possible. Do not dispose as 
household waste.