Battery and charger information
60
the charging indicator appears on the display or before any 
calls can be made.
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