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g pen pro vaporizer review

Review: The New G Pen Pro Portable Vaporizer from Grenco Science

Specifications

  • Manufactured By: Grenco Science
  • Manufactured In: China
  • Designed In: California
  • Designed For:
    • Dry Herb
See all specifications

Grenco Science, the company behind the original G Pen vaporizer, has quickly established itself as one of the largest and most well-recognized portable vaporizer manufacturers in the world. With celebrity endorsements from Snoop Dogg, Taylor Gang, DGK, and more, Grenco continues to look for ways to expand its reach and connect with the community; so far, the company has found a bundle of success.

The G Pen Pro is the company’s newest product offering and is the next generation of the original G Pro Herbal, a less-sophisticated vaporizer pen launched by Grenco in early 2014. Like the G Pro Herbal, the new G Pen Pro is designed specifically to vape dried herbs (not concentrates or liquids) and retails for the relatively low price of $99.95 USD.

Before we dive into the full review, I think it is important to note that the G Pen Pro is a “session” vape that stays heated for the entire life of the session, as opposed to a single-hitter that requires you to press and hold a button each time you want to take a draw. Naturally, this makes the G Pen Pro a decent option for those who like to take a lot of draws per vape session, and a less attractive option for those who prefer just 1-2 hits at a time. If you prefer the latter, you may want to consider browsing Medical Jane for other quality [single-draw] vaporizers.

New Stylish Looks, Same Old Materials & Internal Workings

As is typical for Grenco, the company has taken steps to ensure that the newest addition to their product line is aesthetically pleasing. If you are looking for a pen that has a nice feel in your hand, and is small and light enough that you can carry it around discretely in your hand or slip it into your pocket for a few hours without much thought, then you are going to love the new G Pen Pro. It certainly looks chic and stealthy – some may even go as far as calling this vaporizer sexy.

But if you are looking for new features or advances in technology, the G Pen Pro isn’t going to excite you. I was happy to see a shortened heating time with the new pen; however, other than that and making the device a bit smaller, lighter, and better looking than its predecessor, it certainly feels like Grenco made little to no noticeable improvements to the device’s inner workings.

Not only that, but the company continues to use questionable/cheap materials despite health and safety concerns raised by us and other reviewers. This is a little disappointing because we look to leaders like Grenco to set the standard by making a commitment to enhancing the overall safety and functionality of vaporizers.

For example, the mouthpiece of the G Pen Pro is still made of plastic (PBT) with a melting point 240ºC [464ºF], rather than glass (preferred). Because of this, the vapor quality suffers, especially after long medicating sessions with continued use / increased internal temperatures. I know what you may be thinking…”but wouldn’t glass be more prone to breakage?” Yes, but glass is also cheap and easy to replace, inert, fairly heat-resistant, and typically improves overall vapor quality. To minimize breakage and allow for easy carrying, perhaps Grenco could implement some sort of push mechanism to either hide or extend the glass mouthpiece, similar to how a ballpoint pen works.

Perhaps we’ll see some exciting changes in the next generation, but only time will tell.

The material of the heating chamber is stainless steel. The white material around the heater is silicon, which has a melting point of 250ºC [482ºF] after a period of 30+ minutes of continuous heating.

Additionally, the small metal filter inside of the mouthpiece cover has tiny airways which tend to clog after just 2-3 sessions. Your purchase of the G Pen Pro does include a cleaning kit, with a brush that makes it relatively easy to keep clean with regular upkeep.

The G Pen Pro is a less than ideal option for getting the most flavor out of each draw – even when using top shelf herbs with strong terpene profiles. There is a burnt popcorn flavor that lingers after each draw, especially at higher temperatures, which only gets worse without the continued re-stirring of the ground material inside the heating chamber. This makes one wonder if it is due to poor design of internal mechanisms, the materials used (mentioned above), and/or because the unit uses conduction heating, which means that the ground material in the chamber risks becoming over-heated as it sits directly on the heat source.

The cleaning kit does include a stir tool to help mitigate the risk of overheating your herbs, but having to turn off the vape and stir up the material in the device’s heat chamber after each 2-minute session (especially when on the go) was a little annoying and is simply too tedious for heavy-use vaporists like myself.

What’s Included with the G Pen Pro Vaporizer

Open the G Pen Pro packaging and you will find:

  • 1 G Pen Pro vaporizer
  • 1 USB/Mini-USB charging cord
  • 1 cleaning brush
  • 1 G Pro tool

How to Use The G Pen Pro Vaporizer

To fill the G Pen Pro vaporizer, remove the plastic mouthpiece by popping it off with your fingers to reveal a small chamber. Grind your dried herb material (not too fine, but not too chunky), and pour it in to the herb chamber. Lightly tap down the material, but be careful not to over pack or it will restrict the device’s airflow and leave you dissatisfied with your session.

Something that may mix up new users is that the mouth piece is actually two separate but connecting pieces: a small rubber cap and a hard-plastic piece. Both should stay snapped together while removing the mouthpiece, if you take them off separately and put them back on separately, the rubber cap will not fit correctly.

To turn on the G Pen Pro vaporizer, simply tap the power button with a leaf on it five (5) times. When done correctly, the device’s LEDs will light up to the last-selected temperature setting.

The G Pen Pro has three preset temperature settings to choose from:

  • Blue: 375 F | 190 C
  • Green: 400 F | 204 C
  • Red: 428 F | 220 C

To select your desired temperature setting, press and hold the leaf button for five (5) seconds until you see the LEDs change colors to the next temperature setting. Continue to toggle through the different heat settings until you’ve selected your desired temperature. From here, the LEDs should be glowing, which signifies that the G Pen Pro herb chamber is heating up to the selected temperature. The LEDs will turn solid and quit blinking once the unit is pre-heated and ready for you to begin taking draws from the mouthpiece.

From my experience, the green temperature setting (400 F | 204 C) consistently generated the best results / most vapor. It takes roughly 15 – 30 seconds for the pen to reach the selected temperature setting (depending on the heat setting) which is certainly an improvement over the 60 – 90 seconds heat up time from its predecessor). However, you should know that it typically takes at least two to three draws (long inhales) until the herb in the chamber gets hot enough to produce vapor that you can see when exhaling. If you think the unit is not working, keep going and see how you feel after the unit heats up more and you take a few more draws.

Charging the G Pen Pro Vaporizer

The Grenco website states that it takes between 2 and 3 hours to fully charge the 2200mAh / 7.77Wh, 3.7-4.0V lithium-ion battery. We found this to be accurate, with a time closer to 2 hours when charging from a wall outlet. The four LED lights on the vape display the remaining battery life. When all LEDs are lit, the pen is fully charged. When there are less than two LEDs lit, the G Pen Pro should be charged.

The USB/mini USB cord can connect into a computer port or an adapter for a wall outlet. While the device is charging you get to enjoy a 4th color setting: turquoise!

For its price point, the battery life for the G Pen Pro is pretty good. We averaged about 8 long sessions (2 minutes per session), with 10+ draws per session. When doing this, the batteries would last roughly a day and a half on a single charge.

After trying a few different set-ups, we found that lightly packing to the top of the stainless-steel chamber with larger crumbs, combined with long slow inhales, gave the best results for vape flavor. We let the temperature sit at the green color and would get 6 or 7 nice long drags until jumping to the red setting after that for 3 or 4 more hits. The flavor quality dropped with more hits and had a strong popcorn flavor in the red setting.

The G Pen Pro Vaporizer: Final Thoughts

Although the G Pen Pro does what it sets out to do, it’s really nothing to get that excited about. The vaporizer essentially holds the same set of pros and cons as we outlined for its predecessor, the G Pro Herbal vaporizer. On one hand, the unit’s extended battery life, discrete design, and cheap price tag of $99.95 are strong selling points for someone looking to vape on the go. On the other hand, the G Pen Pro’s fast-clogging mouthpiece, inferior construction materials, and lackluster draws of vapor leave much more to be desired, especially for daily users.

Grenco Science, the company behind the original G Pen vaporizer, has quickly established itself as one of the largest and most well-recognized portable vaporizer manufacturers in the world. With celebrity …

G Pen PRO Review

Kit & Accessories

  • G Pen Pro
  • Cleaning brush + packing tool
  • USB charging cable
  • Grinder card

Compatibility: The G Pen Pro is only compatible with dry herb.

Official Accessories

You can get replacements for the mouthpiece, grinder card, and the charging cable at the G Pen website. However the grinder card is not the best way to grind herb, so you would be better off using a quality herb grinder like the SLX, which you can get from Vape-Smart.

It’s also unnecessary to buy a replacement cable from them since you can buy one anywhere. Whatever you decide to buy from their website, don’t forget to use the G Pen coupon code when you do.

Design & Features

General Design: The Pro has a very sleek, discreet design that looks good, but also won’t attract too much attention, which is a pretty nice trick. It has a smooth, slim design without any bumps or protuberances since the power button sits flush against the body of the vape. That means it fits nicely in your hand and easily slips into your pocket.

It has the understated grey color that you see in all of G Pen’s vapes, and it manages to look good without being too noticeable. My only issue is that the flat mouthpiece with the small slit isn’t my favorite type of mouthpiece because it always feels awkward. It does help with portability and concealability though, so I can see why they chose it.

Ease of Use: This is a pretty good choice for beginners because it is very easy to use. There is only one button to control the power and preset temperature settings, so it’s pretty simple to come to terms with using the Pro. Loading is easy too since all you have to do is remove the mouthpiece when you want to fill the chamber, and replace it when you’re done. The G Pen Pro is a simple, uncomplicated weed vaporizer to use, which is always a good thing.

Build Quality: The Pro is made from aluminum so it’s nice and durable, plus its fingerprint and scratch-resistant, which is always a plus. The mouthpiece is made of plastic though, which is a little problematic. That’s because it’s located right over the oven, and since plastic doesn’t really disperse heat all that well, the mouthpiece tends to get a little warm during use.

Cleaning and Maintenance

It’s really easy to take care of the G Pen Pro. You can use the included cleaning brush to clean out the chamber. As for the mouthpiece, a soak in isopropyl alcohol for an hour or two should do the trick.

How to use

  • Remove the mouthpiece from the rest of the vaporizer to expose the herb chamber.
  • Fill the chamber with herb and replace the mouthpiece.
  • Press the power button five times to turn on the device.
  • Hold down the power button to cycle through the temperature settings.
  • Once the setting has been chosen and heating is complete, inhale from the mouthpiece.

Temperature Settings: 375°F | 400°F | 428°F

Here is a link to the official manual.

Performance & Vapor Quality

Vaporizer Performance: The Pro heats up in about thirty seconds, which is pretty quick for a dry herb vaporizer. As I mentioned earlier, the mouthpiece does get a little warm after you use it for a while.

Vapor Quality: The vapor produced by the Pro is just decent. You wouldn’t expect amazing vapor quality in a weed vape that costs less than $100, but even in that category, the Pro isn’t the best. Vapor quality starts out decently strong but falls off during each session, which is pretty disappointing.

I got the best vapor at the lowest temperature setting because, at the higher ones, the vapor becomes too harsh and uncomfortable. Vapor production isn’t too dense no matter the temperature setting, which isn’t a bad thing since the Pro is meant to be a discreet vape.

Battery Performance: The battery only lasts for about thirty to forty minutes and takes roughly two hours to recharge. Those aren’t great numbers even when you take the Pro’s size and price point into consideration.

Newcomers may like the G Pen Pro but everyone else will be unsatisfied with the average vapor quality. Find out more in the review. ]]>