Samsung SCH-A645BKAATL - Manual (Page 206)

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Section 14
signal strength on the cellular network and the parameters set
by the network operator.
• 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. 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.