User's Manual

117
Using Batteries
Precautions When Using Batteries
 Never use any charger or battery that is
damaged in any way.
 Use the battery only for intended purpose.
 If you use the phone near the network’s base
station, it uses less power; talk and standby
times 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 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. When charging after
complete discharge, the phone will not display
anything for about 30 minutes.
 Use only 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 the battery 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 it 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 not work temporarily, even when the battery
is fully charged. Li-ion batteries are particularly