How do I find out how much battery life I still have?
Your Livescribe 3 smartpen must be connected to your mobile device. Launch Livescribe+ and you'll see the smartpen connection icon at top right. The icon color will indicate when your smartpen's battery is below 50% (yellow) or almost empty (red).
You can also see a more accurate reading of your smartpen battery level in the Smartpen Settings menu by tapping on the smartpen icon or by accessing the Left Panel Menu.