The G Pen Gio cartridge is aligned correctly with the battery when the embossed G logo and mouthpiece opening are facing the same direction as the front “G” light on the battery. The cartridge should slide down completely into the top of the battery.
If you have any further inquiries, please contact our Customer Service Department anytime Monday through Friday, 8:00am to 5:00pm PST.
Email: help@grencoscience.com
Phone: (800) 948-7480
