AIRIS T480 User Manual Page 12

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2.3.2 Charging the Battery
When the power of the battery is below the normal value of working electronic pressure, the
screen will display a charging notice and an empty battery icon. At the same time, the battery
will make a notice sound. Please charge the battery immediately; otherwise, the saved
information might be lost. If you do not charge the battery or replace the battery immediately,
the phone will be closed automatically after a while.
The phone contains a rechargeable lithium battery. The phone is designed to use only
manufacturer-specified original chargers and batteries, to secure the longevity of service of the
phone.
z Plugging the charger plug into the USB charger port carefully.
z If charging in the switch-off status of the phone, connect the USB charger to the external
power source, and the battery icon in the phone screen will begin flickering and the phone still
can be used. If charging in the switch-on status of the phone, the LED indicator will turn red.
Before the first use, please charge the battery by using the accessory charger. The charging
time needs 8 to 10 hours. The new battery will reach its best performance after two or three
times full charge/discharge cycles.
z When the battery finishes chargingthe indicator LED will turn green.
z Disconnect the connections between the charger and the phone.
Note: The accessory USB data cable has the charging function too in connecting the phone
and the computer. However, because the voltage provided by the USB port of the
computer cannot meet the charging requirements of the phone completely, using
USB data cable to charge the battery will affect the longevity of the battery. We
advise you to charge the battery by using the battery charger.
2.4 Power on/off
Press “Power” key for several seconds and you can power on/off your phone. System will
prompt alert information on screen if no SIM card installed.
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