LG LGL45C - Manual (Page 22)

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Do not wait until your battery is completely depleted before
charging your device. Repeating this process of a complete
discharge and recharge can over time reduce the storage
capacity of any battery.
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Turn off Automatic application sync.
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Use the Power Control Widget to deactivate hardware functions
such as Wi-Fi, Bluetooth, GPS, Synchronization, or the LCD
brightness setting.
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Check the Running Services and close any unnecessary
applications.
●
Turn down screen brightness and set a shorter screen timeout.
To check the battery's charge level:
Press > >
Settings > About phone > Status.
The battery status (charging or discharging) and level (as a
percentage of fully charged) are displayed at the top of the
screen.
To monitor and control what uses the battery:
The Battery use screen shows which applications consume the
most battery power. You can also use it to turn off applications
that you’ve downloaded, if they are consuming too much power.
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Device Basics