LG -K8V-VS500 User Manual page 16

The Basics
14
Charging with the USB Cable
NOTE
You can use your computer to charge your phone. To be able to charge with
the USB cable, you need to have the necessary USB drivers installed on
your PC first. Connect one end of the USB cable to the USB/Charger port
on your phone (as shown above) and connect the other end to a USB port
on your PC. It's best to use the rear USB port when connecting to a
desktop PC. The USB hub should be powered by an external power source.
NOTE
Make sure to correctly orient the cable's plug with the port before plugging it in.
When the phone is facing upward, the USB logo on the cable will also face upward.
You may experience a slower charging rate when charging from your computer.
USB Cable