If you first charge the battery, wait for its full charge. So it is advisable to do always, even if you have previously loaded the laptop. This simple rule will extend the battery life.
Insert the power cord into the slot provided. It can be located on the side of the laptop and on the rear panel. Entrance is usually round shape. When you try to insert the wire in the wrong socket, you just won't work.
After you have inserted the wire into the socket, insert the charger plug into the socket, the voltage which should be 220 watts.
Once the battery starts to charge, this light will turn red indicator after full charge the battery will change its color to blue. Then disconnect the cable from the laptop and remove the plug from the socket.