1
Optimizing the Power Performance
•Tap
>
Settings
>
System
tab >
Power
>
Advanced
,
and adjust the time for turning off the device if it is not in use
.
Managing a Low Battery
When the low-battery warning appears, do the following:
1. Immediately save your current data.
. Start charging the battery or turn off your phone.
Charging the Battery
1. To charge the battery, place the battery into the battery slot correctly. See previous section for
how to install the battery.
. Do one of the following:
•Connect the device with the AC adapter and plug the AC adapter into a power outlet.
•Connect the device to a PC with the USB cable.
To charge the device with the USB cable, you must connect the device to a functioning USB port
on a PC that is powered on.
Do not operate your device to temperatures above 40˚C (72˚F) while charging the battery.
Do not leave the battery in a place above 60˚C (140˚F).