Nokia Classic 1680 User Manual page 47

If a replacement battery is being used for the first time or
if the battery has not been used for a prolonged period, it
may be necessary to connect the charger, then disconnect
and reconnect it to begin charging 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.
If the battery is completely discharged, it may take several
minutes before the charging indicator appears on the
display or before any calls can be made.
Use the battery only for its intended purpose. Never use
any charger or battery that is damaged.
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.
Leaving the battery in hot or cold places, such as in a closed
car in summer or winter conditions, will reduce the
capacity and lifetime of the battery. Always try to keep the
battery between 15°C and 25°C (59°F and 77°F). A device
with a hot or cold battery may not work temporarily, even
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