LG -P655k User Manual page 25

NOTE: Make sure the battery is installed before connecting the USB adapter.
If the battery is not installed and the USB adapter is connected, the phone will
not operate properly due to prolonged power cycling. Also, removing the battery
with the USB adapter connected may damage the device. Please unplug USB
adapter before removing battery.
Warning! If the touch screen does not function while the phone's in the
process of charging, this may be due to an unstable power supply. As a result,
disconnect the USB cable from the device or unplug the USB adapter from the
power outlet.
1 Connect the USB adapter and USB cable.
2 Plug the USB cable (as shown below) into the phone's Charger/Accessory
Port.
NOTE: The battery must be fully charged initially to improve battery lifetime.
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