To check the battery level of your pen, slide the power button: 

• Three green lights mean the battery is sufficient and greater than 66%
• Two green lights mean the battery is sufficient and greater than 33%
• One green light means the battery is sufficient and greater than 15%
• One red blinking light means the battery is less than 15% and should be charged immediately

NOTE: A blinking red LED without a battery check means the battery life is critical and the pen should be charged immediately. 

We recommend that you charge Crayon daily. A full charge can support up to 7 hours of active use. It takes approximately 30 minutes to fully charge Crayon. 

To charge your Crayon:

1. Insert the USB-C cable into the open end of Crayon.
2. Connect the cable to a power adapter or any computer.
3. The LED will blink green while it is charging. When fully charged, the LED will glow solid green.

NOTE: You cannot use the Crayon while it is charging.