Legacy Products FAQ

When the G Pen Roam needs to be charged, the LED display will show the image of a flashing empty battery, and will not heat if activation is attempted.

If your G Pen Roam has restricted airflow, you can do the following to clean and declog:

Separate the following components:

1. Quartz tank
2. Tank cover
3. Two detachable air path channels:

• Stainless steel central air path channel inside flip-top lid of battery
• Silicone air path channel liner attached to internal backing of battery

1. Excluding the silicone air path channel, soak the above parts in ISO for at least one hour, then remove and wipe down all surfaces with cotton swabs.  
2. Use a cotton swab with ISO to clean off any reclaim in the silicone air path channel liner and battery, then wipe down and dry completely.
3. Common areas for clogging can be found in the stainless steel air path inside the flip-top lid of the battery, the air path opening at the bottom of the Quartz tank, and along the silicone air path liner of the battery.  To minimize clogging in these areas, be sure to limit your loads to smaller dab sizes, no larger than a couple grains of rice.
4. Fully assemble parts and engage device at full activation on MAX temperature level to burn off any residual ISO on remaining parts.

Regular cleaning and maintenance is recommended to avoid clogging and extend the life of your Roam.

If your G Pen Roam is experiencing a connection issue, follow the steps below:

1. Remove tank and tank cover from battery.
2. Confirm a flush connection between the Quartz tank and tank cover.  A small tab on the bottom of the Quartz tank should fit flat into the bottom of the tank cover.  The tab should be oriented directly towards the Roam mouthpiece when placing the Quartz tank and tank cover back into the battery.  The front panel of the tank cover should also sit flush with the front face of the battery.
3. If these conditions are met and you are still experiencing connection issues, please contact G Pen Customer Service.

If your G Pen Roam is not heating, or is displaying a connection error on the LED screen, you can do the following:

1. First ensure the Roam is fully charged. 
2. Remove tank and tank cover from battery.
3. Confirm a flush connection between the Quartz tank and tank cover.  A small tab on the bottom of the Quartz tank should fit flat into the bottom of the tank cover.  The tab should be oriented directly towards the Roam mouthpiece when placing the Quartz tank and tank cover back into the battery.  The front panel of the tank cover should also sit flush with the front face of the battery.
4. If these conditions are met and you are still experiencing connection issues, please contact G Pen Customer Service.

To replace the atomizer in the G Pen Roam, first flip the tank lid upwards to expose the quartz tank underneath. Be sure to allow the tank to cool completely before handling. Next gently pull the quartz tank with silicone cover away from the Roam's base - the tank itself can then slide downward and out of the tank cover. Insert the new Roam atomizer into the silicone tank cover, ensuring the tabs line up to fit flush. Finally, slide the tank and cover back into the appropriate slot on the Roam.

Best cleaning practices for the G Pen Roam can be found below:

Separate the following components:

1. Quartz tank
2. Tank cover
3. Two detachable air path channels:

• Stainless steel central air path channel inside flip-top lid of battery
• Silicone air path channel liner attached to internal backing of battery

1. Excluding the silicone air path channel, soak the above parts in ISO for at least one hour, then remove and wipe down all surfaces with cotton swabs.  
2. Use a cotton swab with ISO to clean off any reclaim in the silicone air path channel liner and battery, then wipe down and dry completely.
3. Common areas for clogging can be found in the stainless steel air path inside the flip-top lid of the battery, the air path opening at the bottom of the Quartz tank, and along the silicone air path liner of the battery.  To minimize clogging in these areas, be sure to limit your loads to smaller dab sizes, no larger than a couple grains of rice.
4. Fully assemble parts and engage device at full activation on MAX temperature level to burn off any residual ISO on remaining parts.

To fill the G Pen Roam's water tube, first remove the unit's battery and heating chamber by gently pulling up and away from the mouthpiece. The Roam's mouthpiece can then be removed from the enclosed water tube by gently pulling upward. Water can then be poured into the tube's opening until it reaches the black fill line at the bottom of the tube. Once the mouthpiece and battery is reattached, the Roam is ready for use.

To load concentrates into the G Pen Roam, first flip the unit's lid upward to expose the quartz heating element underneath. Using the included tool, place concentrates onto the center of the enclosed quartz dish. Once the desired amount of concentrate is loaded, close the lid to cover the heating element. Press the power button two times to activate heating.

Once the G Pen Roam is powered on and the desired temperature is selected, click the main power button two times to activate heating. The Roam will vibrate, and its display will show wavy lines to indicate heating has begun. Once the unit reaches temperature, it will vibrate again and will display a thumbs up. Heating can be cancelled at any time during the process with two more clicks of the power button.

Once the G Pen Roam is powered on, the temperature setting can be adjusted in increments of 25* F using the two buttons on the side of the device. The temperature can be changed to *C by holding the power button and temperature increase button for three seconds.

The G Pen Roam is powered on with five clicks of the circular activation button located above the G Logo on the rear of the unit. The Roam can be powered off with five clicks of that same button. The unit will vibrate to indicate it has been powered either on or off.

If the G Pen Gio battery doesn’t light up when being drawn upon, there may be one of two issues. First, make sure your G Pen Gio battery is fully charged. If the light does not illuminate while drawing, nor while plugged in, please contact customer service to initiate the unit’s warranty. If the G Pen Gio battery is showing to be fully charged, there may be a connection issue between it and the cartridge. Remove the cartridge and ensure nothing is coming between its bottom and the insert on the battery.

The G Pen Gio is breath-activated, so once the unit is charged and has a cartridge inserted, you’ll only need to draw through the unit’s mouthpiece until the desired amount of vapor is consumed.

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.

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.

When the G Pen Gio battery needs to be charged, the front “G” light will blink five times when the unit is drawn upon.

The G Pen Gio battery is charged by plugging the included micro USB cord into the bottom of the unit’s battery, as well as an acceptable USB port or AC adapter. The “G” light on the front of the unit will light up, indicating the battery is being charged.

Yes - the G Pen Gio battery and charger are both covered for a year from the date of purchase. Cartridges can be warrantied at the retailer or point of purchase, in line with their own warranty protocol.

G Pen Gio Cartridges are only sold at authorized retailers. You can find such a retailer near you by using our store locator.

For Celsius, simultaneously hold down front panel button and upper side button.

For Fahrenheit, simultaneously hold down front panel button and lower side button.

Check out this youtube video if you need more help!

When the battery life indicator bars flash four times, it’s time to re-charge.

Rechargeable 2200mAh / 7.77Wh, 3.7-4.0V lithium-ion battery.

Hold the front panel button for one second and release to engage heat-up.

On a full charge, the G Pen Elite can last 12-15 maximum activations (five-minute heating periods).

All four battery life indicator bars will be illuminated.

Always clean immediately after every use. The cleaning brush should be used to brush off residual material around the connection of the mouthpiece and over the filter screen.  Pre-heating the device before cleaning will make it easier to brush off any ground material residue.  If there is significant build-up, separate all three pieces of the Elite’s mouthpiece and soak in rubbing alcohol.  Running the entire mouthpiece under hot water can also be effective.

Check out this youtube video for cleaning tips, or this video for a more comprehensive cleaning guide.

Without packing the chamber too tightly, the chamber can fit anywhere between 0.25 - 0.75 grams of dried material.

0.11 cubic inches, or17.35 x 16.28 x 7.56 mm.

We do not recommend it, as any leakage through the airflow holes at the bottom of the chamber can permanently damage the internal components of your device and this will not be covered under warranty.

To get the best and most long-lasting flavor out of your preferred ground material, we recommend setting the temperature around 375°F, or 190°C.

Make sure to fully clean the mouthpiece before removing the filter screen.  Use the G Pen Tool included to push against the filter holes of the screen, sliding it out of the small opening at the front of the mouthpiece.

Always use a grinder, or G card, to grind up dried material.  For best results, make sure your dried herbs are finely ground.  Larger grounds will take longer to vaporize and yield less vapor.

Aluminum-alloy oxygenation panel, ceramic, silicone rubber, stainless steel, and BPA-free food-grade plastic (polybutylene terephthalate).

112.2 x 31.6 x 25.7 mm

Press firmly upward on back of mouthpiece then lift one side upward to remove.

Grenco Science warrants the G Pen Elite against defects in materials and workmanship under normal use for a period of one (1) year from the date of retail purchase by the original end-user purchaser. If a physical defect arises and a claim is received within the Warranty Period, Grenco Science will exchange the defective product with a new product.  The Limited Warranty does not apply to normal performance degradation of batteries or neglecting to adhere to cleaning/loading instructions.

Full replacement mouthpieces (Mouthpiece, silicone rubber covering, filter screen) and mouthpiece filter screen packs are available for sale from GPEN.COM.

Yes, registering your product will ensure that a warranty replacement is processed smoothly and efficiently via our Customer Service department, should you experience any operational defects in the Elite they are unable to solve for you over the phone or via e-mail.  Most importantly, you will be the first to hear of any important product updates related to your purchase of a G Pen Elite for Ground Material.  Go to GPen.com/Register your S/N, which can be found on the label at the bottom of the packaging.

For basic cleaning, we recommend using our G Cleaning Tips, which come filled with a cleaning solution. If deeper cleaning is required, you can also use your G Tool to remove more solid residue. For the deepest cleaning, you can soak your mouthpiece in isopropyl alcohol for about 20-30 minutes, followed by thoroughly rinsing it with hot water. This should loosen and dislodge even the toughest built up residue.

The G Pen Vaporizer has an auto-off feature to prevent it from overheating. After your button is held down for an extended period of time, it will shut itself off. We recommend allowing at least 20 seconds to pass between each use to maximize the life of your G Pen.

Once the G Pen Pro Vaporizer has been powered on, you can cycle through its three temperature settings by simply holding the power button for three seconds. The front LED lights will change color, indicating the temperature setting has been changed. The three temperature settings and their corresponding colors can be found below:

Low (Blue) - 375° F / 190° C

Medium (Green) - 400° F / 204° C

High (Red) - 428° F / 220° C

Make sure to charge the G Pen Pro Vaporizer prior to use. Once the G Pen Pro is charged in full, press the power button five times. The unit will stay powered on for four minutes, but you can shut it off before that by pressing the button five times again.

The temperature will initially be set to the lowest setting, which is indicated by blue LED lights displayed directly below the power button. The front LEDs will blink while the G Pen Pro is heating to the selected temperature.

Once the G Pen Pro Vaporizer has reached the desired temperature, the front LED lights will light up solid, indicating that it is ready for use.

Yes, registering your product will ensure that a warranty replacement is processed smoothly and efficiently via our Customer Service department, should you experience any operational defects in the G Pen Pro that they are unable to solve for you over the phone or via e-mail.  Most importantly, you will be the first to hear of any important product updates related to your purchase of a G Pen Pro Vaporizer.  Go to GPen.com/Register your S/N, which can be found on the label at the bottom of the packaging.

The G Pen Pro Vaporizer is designed with an automatic shut-off feature to conserve battery life and prevent unnecessary heating. The G Pen Pro Vaporizer will automatically shut off after a four minute period because of this. If you would like to continue using the G Pen Pro after the automatic shut-off feature has gone into effect, simply press the power button five times to restore power and continue use.

To charge the G Pen Pro Vaporizer, connect the G Pen Pro USB Charger to any compatible USB port. Connect the G Pen Pro USB Charger to the base of the G Pen Pro. Once connected, the front LED lights will activate in a climbing pattern to indicate that a charge is in progress.

Once the G Pen Pro Vaporizer has been fully charged, all four LEDs will remain solid.

Load preferred dried blends BEFORE turning the G Pen Pro Vaporizer on.  

The G Pen Pro Vaporizer will only need 1-3 hours maximum to complete a full charge cycle.

The best ways to clean your G Pen Pro Vaporizer are the following:

• Once you are finished vaporizing your ground material, remove the mouthpiece and empty the chamber.
• Allow the unit to cool down before using the included cleaning brush to remove any remnants from the chamber.
• The mouthpiece can be removed from the unit and soaked in isopropyl alcohol or your preferred cleaning solution, followed by a warm water rinse and air dry.

The G Pen Pro Vaporizer has a heating chamber that can hold approximately 0.25 grams of ground material.

When the G Pen Pro Vaporizer needs to be charged, the front LED lights will flash white 5 times indicating the device is out of power.

On a full charge, the battery can power a minimum of 12 activations, or 48 minutes of heating time.

Make sure the G Pen Pro Vaporizer is OFF before, and while you're loading your preferred dried blends.

To achieve the best results, use the G Card to finely grind your preferred dried blends before loading them into the heating chamber.

Remove the G Pen Pro Mouthpiece by applying pressure to either side of the top while pushing in an upward direction.

Load the chamber in full, be careful not to overpack. Once your preferred dried blends have been loaded into the heating chamber, snap the G Pen Pro Mouthpiece back onto the G Pen Pro Vaporizer. Turn the G Pen Pro Vaporizer on by pressing the power button five times. Select the desired temperature setting by holding the power button, wait for the indicator LEDs to stop flashing to indicate that it's reached the desired temperature and then draw.

For optimal performance of your G Pen Pro Vaporizer, we recommend the following:

• Make sure your material is finely ground and loaded down tightly to the bottom of the tank.
• A larger amount of ground material loaded will generally create a larger volume of vapor than a small amount.
• Regularly clean the G Pen Pro Mouthpiece, as built-up residue can largely hinder the unit's performance.
• Allow the G Pen Pro Vaporizer to cool down before attempting to clean it with the included cleaning brush.
• Allow the G Pen Pro Vaporizer to finish one full heating cycle before producing maximum vapor, especially on lower temperature settings.

Yes! The G Pen Nova Battery will fit and power all standard 510 threaded cartridges.

To load your concentrates into the G Pen Nova Tank, first remove the mouthpiece from the tank by gently pulling it upward. Then, use the steel pick attached to the mouthpiece to scoop the material and insert it into the tank by simple reattaching the mouthpiece. 

The G Pen Nova Tank needs to be replaced over time, and has a durability index of approximately six weeks per average user. The G Pen Nova Tank can be purchased a la carte.

Once the G Pen Nova is powered on, the Extended Draw Mode can be activated by clicking the button twice. The LED surrounding the button will remain lit, and the battery will heat for 15 seconds without the need for holding the button down. This automatic heating can be cancelled at any time by clicking the button.

When the G Pen Nova Battery needs to be charged, the light surrounding the power button will blink five times when the button is pressed.

Once the G Pen Nova has been powered on, you can cycle through its three voltage output settings by simply clicking the power button three times. The  LED light surrounding the button will change color, indicating the voltage setting has been changed. The three voltage settings and their corresponding colors can be found below:

• Low (Blue) - 3.2V
• Medium (Green) - 3.5V
• High (Red) - 3.9V

Make sure to charge the G Pen Nova prior to use. Once the G Pen Nova Battery is charged in full, press the power button five times. The button will blink three times to indicate it has been powered on. To power the device off, click the button five times again. The button will blink one time in each color (blue, green, red) to indicate it is powering down.

Yes, registering your product will ensure that a warranty replacement is processed smoothly and efficiently via our Customer Service department, should you experience any operational defects in the G Pen Nova that they are unable to solve for you over the phone or via e-mail.  Most importantly, you will be the first to hear of any important product updates related to your purchase of a G Pen Nova.  Go to GPen.com/Register your S/N, which can be found on the label at the bottom of the packaging.

The G Pen Nova is charged by plugging the included micro USB cord into the bottom of the unit’s battery, as well as an acceptable USB port or AC adapter. The small LED light on the bottom of the unit will light up red, indicating the battery is being charged. Once charging is complete, the LED will turn from red to green.

Yes! The Nova LXE Battery will fit and power all standard 510 threaded cartridges. We recommend checking the recommended voltage setting for your cartridge prior to use.

Once the Nova LXE has been powered on, you can cycle through its three voltage output settings by simply clicking the power button three times. The  LED light surrounding the button will change color, indicating the voltage setting has been changed. The three voltage settings and their corresponding colors can be found below:

• Low (Blue) - 3.2V
• Medium (Green) - 3.6V
• High (Red) - 4.1V

Yes, registering your product will ensure that a warranty replacement is processed smoothly and efficiently via our Customer Service department, should you experience any operational defects in the Nova LXE that they are unable to solve for you over the phone or via e-mail.  Most importantly, you will be the first to hear of any important product updates related to your purchase of a Nova LXE.  Go to GPen.com/Register with your S/N, which can be found on the label on the back of the packaging.

The Nova LXE is charged by plugging the included micro USB cord into the bottom of the unit’s battery, as well as an acceptable USB port or AC adapter. The small LED light on the bottom of the unit will light up and blink red, indicating the battery is being charged. Once charging is complete, the LED will turn from red to green and remain solid.

To load your concentrates into the Nova LXE Tank, first remove the mouthpiece from the tank by gently pulling it upward. You can then use the stainless steel tool attached to the mouthpiece to scoop the material and insert it into the tank by simple reattaching the mouthpiece. 

Direct access to the heating element can be made by unscrewing the connector counter-clockwise from the base of the atomizer.

The Nova LXE Tank needs to be replaced over time, and has a durability index of approximately six weeks per average user. The Nova LXE Tank can be purchased a la carte.

Once the Nova LXE is powered on, the Extended Draw Mode can be activated by clicking the button twice. The LED surrounding the button will remain lit, and the battery will heat for 15 seconds without the need for holding the button down. This automatic heating can be cancelled at any time by clicking the button.

When the Nova LXE Battery needs to be charged, the light surrounding the power button will blink five times when the button is pressed.

Depending on your voltage output settings, you should be able to achieve between 45 to 58 maximum activations with the Nova LXE. You can get more activations using lower voltage outputs.

No, the Nova LXE is for use with concentrates only.

Always make sure the detachable stainless steel is screwed in all the way before pushing down on the mouthpiece. Check both O-rings at base of mouthpiece to make sure they are not out of place. Pushing down and twisting slightly will help to find the best connection.

To prevent unintentional unscrewing from the mouthpiece, the threading on the stainless steel tool is reversed from the connector to the base of the atomizer. Twist clockwise to unscrew, and counter-clockwise to tighten.

Make sure your concentrates are in close contact with the bottom heating element (not on the side walls or too high on the tool). It’s also good to give your initial load a pre-heating session (click button two times) in order to prime the heating element, then again two times before inhaling your first big draw. We also recommend starting on BLUE before working your way up to GREEN, then RED. Always make sure there are concentrates on or around the heating element before activating. Direct access to the heating element can be made by unscrewing the connector counter-clockwise from the base of the atomizer.

Make sure to charge the Nova LXE prior to use. Once the Nova LXE Battery is charged in full, press the power button five times. The button will blink three times to indicate it has been powered on. To power the device off, click the button five times again. The button will blink one time in each color (blue, green, red) to indicate it is powering down.

Press firmly upward on back of mouthpiece then lift one side upward to remove.

Grenco Science warrants the G Pen against defects in materials and workmanship under normal use for a period of one (1) year from the date of retail purchase by the original end-user purchaser. If a physical defect arises and a claim is received within the Warranty Period, Grenco Science will exchange the defective product with a new product.  The Limited Warranty does not apply to normal performance degradation of batteries or neglecting to adhere to cleaning/loading instructions.

The G Pen Ground Material Tank has a durability index of approximately six weeks per average user. The G Pen Ground Material Tank can be purchased a la carte. 

Once you’ve loaded your G Pen Ground Material Tank, threaded it onto your G Pen Battery, and unlocked it by pressing the button five times, simply hold down the button to heat the coil and draw.

To load your G Pen Ground Material Tank, you first need to unscrew the mouthpiece to reveal the heating chamber. Grind your dried blends to a desired consistency, and load the desired amount into the tank. Keep in mind that the airflow through the tank greatly depends on the amount and consistency of the dried blends loaded. Once you’ve loaded your dried blends and screwed your mouthpiece back on, your G Pen Ground Material Tank is ready to be used.

The G Pen Hookah Tank is comprised of an Atomizer, Base, and Encasement. While the G Pen Battery is off (locked), unscrew the Base from the Encasement. Ensure the Atomizer is securely threaded into the top of the Base before proceeding to load. Invert the Encasement and fill the perimeter of the enclosed tank using the provided liquid Container. Don’t load liquid into the central pipeline of the Encasement, or fill it beyond half capacity. With the Atomizer attached to the Base, screw the Base back onto the Encasement, effectively sealing the tank. Once the entire Hookah Tank is screwed onto the G Pen Battery, it is ready for use.

• The G Pen Ground Material Tank is compatible for use with the G Pen Battery.
• The G Pen Ground Material Tank is designed for use with Dried, Aromatic Material. 
• The G Pen Ground Material Tank is not intended for use with Concentrates. 

Within the heating chamber of your G Pen Ground Material Tank, the coil itself works to clean itself by clearing off any residue that comes in contact with it. We don’t recommend using any type of liquid cleaning agent in the G Pen Ground Material Tank, as doing so could cause it to malfunction. You can use the included cleaning brush and G Tool to remove residue from the area around the coil itself and the surrounding glass sleeve, but be very careful not to be too rough with the coil itself, as too much force applied can damage it.

When the G Pen Battery is in need of a charge, the power button will flash 8 times when pressed.

At this time, connect the G Pen Battery to the G Pen Wired USB G Charger. The G Pen Wired USB G Charger can be connected to either the G Wall Adapter or any compatible USB port. The G Pen Wired USB G Charger will initially show a green light, and then turn red to show that a charge is being administered to the G Pen Battery.

Once the red LED light changes back to green, the G Pen Battery has been fully charged.

If the light on your G Pen Wired USB G Charger remains green, even after the button flashes 8 times, this may indicate that there are issues surrounding the charger's functionality. In this event, please contact our Customer Service Department to discuss warranty options. 

To turn your G Pen Ground Material on, click the button five times in rapid succession. If done correctly, your G Pen Battery will blink three times to indicate it is unlocked and ready to use. You will be able to tell it is unlocked if your button glows when pressed. To turn your G Pen Ground Material off, click the button five times again. The G Pen Battery will again blink three times, but will not light up when the button is pressed. 

Once you’ve loaded your G Pen Coil, threaded it onto your G Pen Battery, and unlocked it by pressing the button five times, simply hold down the button to heat the coil and draw.

To load your G Pen Coil, you first need to unscrew the mouthpiece to reveal the heating coil. Using your G Tool, place your desired concentrates in the tank, on and around the coil. Be careful not to be too forceful with the coil itself, as it is delicate and can be dislodged with too much pressure. Once you’ve loaded your desired concentrates and screwed your mouthpiece back on, your G Pen Vaporizer is ready to be used.

While your G Pen Battery will have some charge out of the box andcan definitely be used, we recommend fully charging it for the first few uses to condition it for peak performance

To charge your G Pen Battery, first remove any tank that may be attached to it. Once your USB G Cord is plugged into the G Wall Adapter, it should show a green light. When you screw your battery onto the charger, the battery will blink three times and remain glowing. The light on the charger will also change from green to red, showing that the battery is charging. When that light turns back to green, the battery is fully charged.

A G Pen Battery flashing 3 times typically indicates a problem in communication between the G Pen Battery and the G Pen Dual Quartz Coil. To fix this, make sure that the connection between the two is clean and secure. If you are still seeing 3 flashes, you can try your battery with other tanks/coils to see if it will solve the problem. If changing tanks/coils stops the flashing, you may need to replace the problem tank/coil. If the battery blinks 3 times with every tank/coil, the issue lies with the G Pen Battery itself. Contact customer service for replacement under our one year warranty.

Make sure to charge the G Pro Ground Material Vaporizer prior to use. Once the G Pro Ground Material Vaporizer is charged in full, press the power button five times. The unit will stay powered on for 4 minutes, but you can shut it off before that by pressing the button five times again.

The temperature will initially be set to the lowest setting, which is indicated by a red LED light displayed directly below the power button. The power button will show red while the G Pro Ground Material Vaporizer is heating to the selected temperature. 

Once the G Pro Ground Material Vaporizer has reached the desired temperature, the power button will turn green, indicating the G Pro Ground Material Vaporizer is ready for use. 

Keeping the G Pen Battery clean helps the overall performance and longevity of the product. Remove any unwanted concentrate residue from the power button and connection point with a G Tip or Q-Tip soaked in rubbing alcohol. Keeping these areas clean will ensure that the connections remain established and the battery functions at a high level.

We offer a 1-year warranty on all electronic items (not including Tank / Coil systems). If you're experiencing an issue with the G Pen Battery, please contact Customer Service for information on how to get the item replaced. In order to qualify, you must have purchased from our website directly or have a valid receipt to show the date of purchase and the store in which it was purchased from. We do not assist with counterfeit products or any items purchased from third-party websites as most of the counterfeit items are distributed through those channels.

When the G Pen Battery is in need of a charge, the power button will flash 8 times when pressed.

At this time, connect the G Pen Battery to the G Pen Wired USB G Charger. The G Pen Wired USB G Charger can be connected to either the G Wall Adapter or any compatible USB port. The G Pen Wired USB G Charger will initially show a green light, and then turn red to show that a charge is being administered to the G Pen Battery.

Once the red LED light changes back to green, the G Pen Battery has been fully charged.

If the light on your G Pen Wired USB G Charger remains green, even after the button flashes 8 times, this may indicate that there are issues surrounding the charger's functionality. In this event, please contact our Customer Service Department to discuss warranty options.

The G Pen Coil has a durability index of approximately 6-8 weeks per average user.

• The G Pen Coil is compatible for use with the G Pen Battery.
• The G Pen Coil is designed for use with concentrates. 
• The G Pen Coil is not intended for use with ground material. 

To clean the G Pen Hookah Tank, first remove the Atomizer and Base from the Encasement. It is very important that these parts do not get wet. With the base and atomizer removed, simply rinse the Encasement with warm water and allow it to fully dry before refilling.

Once you’ve loaded your G Pen Hookah Tank, threaded it onto your G Pen Battery, and unlocked it by pressing the button five times, simply hold down the button to heat the coil and inhale.

To turn G Pen Hookah Vaporizer on, click the button five times in rapid succession. If done correctly, your G Pen Battery will blink three times to indicate it is unlocked and ready to use. You will be able to tell it is unlocked if your button glows when pressed. To turn your G Pen Hookah Vaporizer off, click the button five times again. The G Pen Battery will again blink three times, but will not light up when the button is pressed. 

The G Slim Hookah Vaporizer comes standard with the G Slim Battery, G Slim Hookah Tank, and G Slim Wireless USB Charger.

Directions for use:

1. Press button five times to turn on/off.

2. Unscrew tank from battery entirely.

3. Unscrew atomizer base from tank to expose both atomizer and tank.

4. Load desired liquids into tank and reattach the atomizer base.

5. Screw tank setup back onto the battery.

6. Press and hold button to heat the atomizer, and draw.

The G Slim Ground Material comes standard with the G Slim Battery, G Slim Ground Material Tank, G Slim Tool and G Slim Wireless USB Charger. 

Directions for use: 

1. Press button five times to turn on/off.

2. Unscrew mouthpiece.

3. Grind dried material and load into top of heating chamber. 

4. Screw mouthpiece back on.

5. Press and hold button to heat coil and draw.

The G Slim Vaporizer comes standard with the G Slim Battery, G Slim Tank, G Slim Tool and G Slim Wireless USB Charger. Directions for use: 1. Press button five times to turn on/off.2. Unscrew mouthpiece.3. Load desired concentrates into the heating chamber. 4. Screw mouthpiece back on.5. Press and hold button to heat coil and draw.

For optimal performance of your G Pro, we recommend the following:

• Make sure your material is finely ground and loaded down tightly to the bottom of the tank. 
• A larger amount of ground material loaded will generally create a larger volume of vapor than a small amount.
• Regularly clean the G Pro Mouthpiece, as built-up residue can largely hinder the unit's performance.
• Allow the G Pro to cool down before attempting to clean it with the included cleaning brush.
• Remove the G Pro from its charger as soon as the light turns green to increase the longevity of the internal battery.
• Allow the G Pro to finish one full heating cycle before producing maximum vapor, especially on lower temperature settings.

Make sure the G Pro is OFF before, and while you're loading your preferred dried blends. 

To achieve the best results, use the G Card to finely grind your preferred dried blends before loading them into the heating chamber.

Remove the G Pro Mouthpiece by applying pressure to either side of the top while pushing in an upward direction. 

Load the chamber in full, be careful not to overpack. Once your preferred dried blends have been loaded into the heating chamber, snap the G Pro Mouthpiece back onto the G Pro. Turn the G Pro on by pressing the power button five times. Select the desired temperature setting, wait for the power button to turn green to indicate that it's reached the desired temperature and then draw.

When the G Pro needs to be charged, the power button will flash 4 times indicating the device is out of power.

The power button will show a red LED light when it flashes 4 times.

The G Pro has a heating chamber that can hold up to .6 grams of dried blends.

Note: 

• This product cannot be used with concentrates. 
•  Ground Material not included     
•  Electronic components are backed with a 1-year warranty   
•  Chamber Capacity is .6 grams

The best ways to clean your G Pro are the following:

• Once you are finished vaporizing your ground material, remove the G Pro Mouthpiece and empty the chamber. 
• Allow the unit to cool down before using the included cleaning brush to remove any remnants from the chamber.
• Remove the filter screens in the mouthpiece by unscrewing the metal grommet used to hold them in place. You can either replace the screen with a new one or clean it using your preferred cleaning solution.

To charge the G Pro Ground Material Vaporizer, connect the G Pro Wired USB Charger to any compatible USB port. Connect the G Pro Wired USB Charger to the base of the G Pro Ground Material Vaporizer. Once connected, the power button will display a red LED light to indicate that a charge is in progress. Once the G Pro Ground Material Vaporizer has been fully charged, the LED light on the power button will turn green. 

Load preferred dried blends BEFORE turning the G Pro Ground Material Vaporizer on.  

The G Pro Ground Material Vaporizer will only need 1-3 hours maximum to complete a full charge cycle.

The G Pro Ground Material Vaporizer is designed with an automatic shut-off feature to conserve battery life and prevent unnecessary heating. The G Pro Ground Material Vaporizer will automatically shut off after a four minute period because of this. If you would like to continue using the G Pro Ground Material Vaporizer after the automatic shut-off feature has gone into effect, simply press the power button five times to restore power and continue use. 

It is important to keep the Original microG Coil clean. If you see unwanted concentrate residue collecting on the outside of the cylinder, around the base or the connection points, simply remove it with a G Tip or a Q-Tip soaked in rubbing alcohol. 

• The G Pen Ground Material Tank is compatible for use with the G Pen Battery.
• The G Pen Ground Material Tank is designed for use with Dried, Aromatic Material.
• The G Pen Ground Material Tank is not intended for use with Concentrates.
• The G Pen Coil is compatible for use with the G Pen Battery.
• The G Pen Coil is designed for use with concentrates.
• The G Pen Coil is not intended for use with ground material.

To charge your microG Battery, first remove any tank that may be attached to it. Once your microG USB Charger is plugged into the G Wall Adapter and battery, the light on the bottom of the battery will turn red, indicating that it is charging. When that light turns back to green, the battery is fully charged.

To turn your microG Vaporizer on, click the button five times in rapid succession. If done correctly, your microG Battery will blink twice to indicate it is unlocked and ready to use. You will be able to tell it is unlocked if your button glows when pressed. To turn your microG Vaporizer off, click the button five times again. The microG Battery will again blink twice, but will not light up when the button is pressed. 

For basic cleaning, we recommend using our G Cleaning Tips, which come filled with a cleaning solution. If deeper cleaning is required, you can also use your G Tool to remove more solid residue. For the deepest cleaning, you can soak your mouthpiece in isopropyl alcohol for about 20-30 minutes, followed by thoroughly rinsing it with hot water. This should loosen and dislodge even the toughest built up residue.

While the microG Vaporizer comes set up to be used with concentrates, there are definitely parts available to adapt it for use with dried material. All you would need to do so would be a microG Ground Material Tank, which screws onto the microG Battery just like the microG Tank included with the set.

Within the actual tank of your microG Tank, the coil works to clean itself by burning off any residue that comes in contact with it. We don’t recommend using any type of liquid cleaning agent in the microG Tank, as doing so could cause it to malfunction. If you need to remove concentrate from the tank, you can do so using your G Tool.

To load your microG Tank, you first need to remove the mouthpiece to reveal the heating coil. Using your G Tool, place your desired concentrate in the tank, on and around the coil. Be careful not to be too forceful with the coil itself, as it is delicate and can be dislodged with too much pressure. Once you’ve loaded your desired concentrates and replaced your mouthpiece, your microG Vaporizer is ready to be used.

If the top of your microG Ground Material Tank becomes clogged, you can soak it in isopropyl alcohol for 20-30 minutes, followed by thoroughly rinsing it with hot water. This should loosen and dislodge and residue built up on this part. For very deep cleaning, you can remove the small screen at the top and use your G Tool to rid the area of heavy residue.

To load your microG Ground Material Tank, you first need to remove the mouthpiece and unscrew the top of the tank to reveal the heating chamber. Grind your material to a desired consistency, and load the desired amount into the tank. Keep in mind that the airflow through the tank greatly depends on the amount and consistency of the ground material loaded. Once you’ve loaded your material, screwed on the top of the tank, and placed your mouthpiece back on, your microG Ground Material Tank is ready to be used.

To charge your microG Battery, first remove any tank that may be attached to it. Once your microG USB Charger is plugged into the G Wall Adapter and battery, the light on the bottom of the battery will turn red, indicating that it is charging. When that light turns back to green, the battery is fully charged.

We offer a 1-year warranty on all electronic items (not including tank/coil systems). If you're experiencing an issue with the Original microG Battery, please contact Customer Service for information on how to get the item replaced. In order to qualify, you must have purchased from our website directly or have a valid receipt to show the date of purchase and the store in which it was purchased from. We do not assist with counterfeit products or any items purchased from third-party websites as most of the counterfeit items are distributed through those channels.

When the microG Battery is in need of a charge, the power button will flash 8 times when pressed.

At this time, connect the microG Battery to the microG USB Charger. The microG USB Charger can be connected to either the G Wall Adapter or any compatible USB port. The bottom of the microG Battery will initially show a green light, and then turn red to show that a charge is being administered.

Once the red LED light changes back to green, the microG Battery has been fully charged.

If the light on your G Pen Wired USB G Charger remains green, even after the button flashes 8 times, this may indicate that there are issues surrounding the charger's functionality. In this event, please contact our Customer Service Department to discuss warranty options.

The microG Ground Material Tank has a durability index of approximately 6-8 weeks per average user.

YES.

The best way to ensure optimum performance/longevity with your Grenco Science Product (microG Pen) is to perform simple cleaning procedures on a regular basis. The most important process lies in the removal of any excess concentrate residue from the connection point of the battery. To be more specific, when referencing the connection point, we mean to describe the part of the battery that is exposed once the coil has been removed. Simply take a Q-Tip, soak it in isopropyl rubbing alcohol, and gently wipe away any of the excess concentrate residue that may have collected there over time. With the microG Pen, it is also important to remove any excess concentrate residue from around the base of the titanium cylinder, on the outer part of the coil. If you notice this excess concentrate residue collecting anywhere, simply engage in this process two to three times a week. It will effectively prevent any disestablished connections between the battery and the coil while keeping the mouthpiece sanitary.  

Do not soak any of your components (microG Coil, microG Battery, Charger) in any type of cleaning solution or rubbing alcohol. This could compromise the pieces.

Do not clean the inside of the coil, the area where the heating element lies. The heating element will essentially clean the inside of the coil by clearing away any of the excess concentrate residue.