LG -K580 Guia Del Usuario página 152

Make sure to use the USB cable provided as a basic accessory.
When connecting a USB cable, make sure that the icon on the cable
faces up. Connecting the cable in the wrong way may damage the
device.
Make sure to use an LG-approved charger, battery and charging cable.
Charging the battery with a third-party charger may cause the battery
to explode or may damage the device.
Using the device when it is charging may cause electric shock. To use
the device, stop charging.
Remove the charger from the power socket after the device is fully
charged. This prevents unnecessary power consumption.
Another way to charge the battery is by connecting a USB cable
between the device and a desktop or laptop computer. This may take a
longer time than charging the battery in the common way.
Do not charge the battery by using a USB hub that is unable to
maintain the rated voltage. Charging may fail or unintentionally stop.
Using the battery efficiently
Battery lifespan may decrease if you keep many apps and functions
running simultaneously and continuously.
Cancel background operations to increase battery life.
To minimise battery consumption, follow these tips:
Turn off the Bluetooth® or Wi-Fi network function when not using
them.
Set the screen timeout to as short a time as possible.
Minimise the screen brightness.
Set a screen lock when the device is not used.
To use a downloaded app, check the battery level.
Basic Functions 31