You can monitor your level of charge by the color of the battery indicator:
- BLUE: 20-100%
- ORANGE: 5-19%
- RED: 0-4% charge remaining.
A red battery indicator light means that you should recharge your battery as soon as possible. Because you may charge your blu while fully-assembled, vaping is possible while your device is being charged. For your safety, do not blow into or subject your device to high heat or pressure.