To charge the Caliburn AK2 you plug in a UCB-C cable into the port at the bottom of the kit. Avoid using a fast-charging wall plug as the 520mAh battery will still charge 0-100% in only 35 minutes. Fast charging will damage the battery and void the warranty. The device should last a full day on one charge. When the Uwell Caliburn AK2 is dead, the LED light will flash red and when fully charged, the light will stay solid green.
LED Colours:
Red: >30%
Blue: 30-70%
Green: <70%