G Pen by Grenco Science engineers advanced, user-friendly portable vaporizers, eRigs, and accessories for dry herbs and concentrates.
Founded in 2012 by Chris Folkerts, Grenco Science is the pioneering company behind the globally recognized G Pen brand. G Pen engineers some of the most advanced, user-friendly portable vaporizers on the market, catering to both dry herb and concentrate enthusiasts. Renowned for its innovative technology and iconic collaborations, the brand continually sets industry standards for quality and accessibility.
From intuitive 510 batteries and portable dab pens to premium hybrid conduction/convection desktop eRigs, G Pen's comprehensive lineup addresses the diverse needs of modern consumers. Refer to the directory below for official G Pen user manuals, setup guides, cleaning instructions, and troubleshooting steps.
Latest manuals from manuals+ curated for this brand.
Common questions about manuals, registration, and support for this brand.
You can register your device's serial number (usually found at the bottom of the device or packaging) by visiting gpen.com/register.
Use a cotton swab lightly dipped in isopropyl alcohol to clean the inside of the mouthpiece and the battery or cartridge connection points. Do not soak the battery in alcohol.
During activation, a blinking LED generally indicates charging status or the remaining battery percentage (depending on the model). It typically turns solid when fully charged. Check your specific manual for exact light coding.
Press the activation button twice consecutively to initiate the 10-second automatic pre-heat cycle (typically outputting around 1.8V).
Yes, Grenco Science stands behind its products and provides a 1-year warranty on electronic components.