The lamp is charged through the area (B).
The LED (C) on the lamp will light red when charging and green when fully charged
You charge the lamp by placing the magnetic end of the included USB cable on the charging area (B).
NOTE: Choosing the correct USB adaptor is very important for your safety and the function of the battery pack. As a minimum, you need to use a USB adapter with the following output: 5V / 2A.
Never charge the battery pack in or near water!