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Battery
Never use a charger or battery that is damaged in any way.
Use the battery only for its intended purpose.
If you use the phone near the network's base station, it uses less power. Talk and
standby time are greatly affected by the signal strength on the cellular network
and the parameters set by the network operator.
Battery charging time depends on the remaining battery charge, the type of battery,
and the charger used. The battery can be charged and discharged hundreds of
times, but it will gradually wear out. When the operation 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.
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 because the capacity and lifetime of
the battery will be reduced. Try to keep the battery at room temperature. A phone
with a hot or cold battery may not work temporarily, even when the battery is fully
charged. Li-ion batteries are particularly affected by temperatures below 0°C (32°F).
Use only approved batteries and chargers. Disconnect the charger from the power
source when it is not in use. Do not leave the battery connected to a charger for
more than a week, since overcharging may shorten its life.
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