Open the USB port cover located next to P8.
Connect the C-type port of the provided cable to the USB port of P8, and the other end to a power source. (You can charge it with a regular mobile phone charger or a computer's USB port).
Charging of P8 will commence, and if the pen is in sleep mode during charging, the upper indicator light above the front LED will periodically flash green.
When charging is complete, the green LED indicator (flashing) will automatically turn off.