Nuwa Pen can have up to 5 hours of battery life, outside of its case. The case has up to 48 hours of battery life.

To improve the battery life of the Nuwa Pen outside of the case, avoid moving it around or place it in the Nuwa Pen case. The Nuwa Pen becomes ready to write, after you pick it up (or when it rolls around in your backpack). We’d therefore recommend keeping your Nuwa Pen in the case to improve the battery life.