How do I know when my G Pen Gio Battery is fully charged?

Once the G Pen Gio Battery is approaching a full charge, the “G” light on the front of the unit will begin flashing. The unit is fully charged once the flashing ends, and the light turns off.

If you have any further inquiries, please contact our Customer Service Department anytime Monday through Friday, 8:00am to 5:00pm PST.

Email: info@grencoscience.com

Phone: (800) 948-7480

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