Samsung SGH-T539 User Manual page 45

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Health and safety information
Battery charging time depends on the remaining
battery charge and the type of battery and charger
used. The battery can be charged and discharged
hundreds of times, but it will gradually wear out.
When the operation time (talk time and standby
time) is noticeably shorter than normal, it is time
to buy a new battery.
If left unused, a fully charged battery will
discharge itself over time.
Use only Samsung-approved batteries and
recharge your battery only with Samsung-
approved chargers. When a charger is not in use,
disconnect it from the power source. Do not leave
the battery connected to a charger for more than a
week, since overcharging may shorten its life.
Extreme temperatures will affect the charging
capacity of your battery: it may require cooling or
warming first.
Do not leave the battery in hot or cold places, such
as in a car in summer or winter conditions, as you
will reduce the capacity and lifetime of the battery.
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Always try to keep the battery at room
temperature. A phone with a hot or cold battery
may temporarily not work, even when the battery
is fully charged. Li-ion batteries are particularly
affected by temperatures below 0 °C (32 °F).
Do not short-circuit the battery. Accidental short-
circuiting can occur when a metallic object (coin,
clip or pen) causes a direct connection between the
+ and - terminals of the battery (metal strips on
the battery), for example when you carry a spare
battery in a pocket or bag. Short-circuiting the
terminals may damage the battery or the object
causing the short-circuiting.
Dispose of used batteries in accordance with local
regulations. In some areas, the disposal of
batteries in household or business trash may be
prohibited. For safe disposal options for Li-Ion
batteries, contact your nearest Samsung
authorized service center. Always recycle. Do not
dispose of batteries in a fire.

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