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Acer F900 Smartphone User Guide90
seek medical attention immediately. For safety reasons, and to
prolong the lifetime of the battery, charging will not occur at
low (below 0 °C/32 °F) or high (over 40 °C/104 °F) temperatures.
The full performance of a new battery is achieved only after
two or three complete charge and discharge cycles. The bat-
tery can be charged and discharged hundreds of times, but it
will eventually wear out. When the talk and standby times are
noticeably shorter than normal, buy a new battery. Use only
Acer approved batteries, and recharge your battery only with
Acer approved chargers designated for this device.
Unplug the charger from the electrical plug and the device
when not in use. Do not leave a fully charged battery con-
nected to the ac 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 a few 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 bat-
tery 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 when the battery is
fully charged. Battery performance is particularly limited in
temperatures well below freezing.
90


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