Hardware Reviews Vape Kits

Review of G-Pen Herbal Vaporizer

The G-Pen is one of the earliest devices from Grenco Science. This is a basic vaporizer. It is easy to operate and does not come with a lot of advanced features. The G-Pen is a beginner-level device. However, it could be used as a travel vaporizer by seasoned vapers. It heats up quickly and produces flavorful vapor. This device has a 900mAh battery so you cannot expect to get huge clouds of vapor from it. This makes the G-Pen perfect for stealth vaping. What’s more, it is cheap and is durable.

There are different versions of this Grenco herbal vaporizer. One of them works with dry herb while the other one is a wax vaporizer. Grenco Science also released the Snoop Dogg G-Pen vaporizer. There are only minor differences between the G-Pen herbal vaporizer and Snoop Dogg G-Pen.


The G-Pen has the typical shape of a vape pen. It is slim and lightweight. The device is very portable and fits in hand easily. This vape pen has three main parts; the battery, the tank, and the mouthpiece. The outer shell is made of stainless steel except the mouthpiece which is made of plastic. The tank of the glass is made of thick glass. All the parts of this device fit together nicely. You will not struggle to put it together.

Heating Chamber

The tank of this device contains a coil which sits on a ceramic plate. When the coil heats up, your herb is vaporized. The heating chamber of this device works perfectly. The only problem is that the device tends to combust herb. This can be a problem for those who are vaping for health reasons. The combustion happens because the herb comes into direct contact with the heated coil. There is no way to prevent this. All you can do is space out your hits. For best results, try to stir the herb in the chamber from time-to-time.

The heating chamber of the G-Pen herbal vaporizer is not very large. You can fit in just a small amount of herb into it. You will be able to get about ten hits from the unit before you need to clean out your tank and refill it. The device has a maximum temperature of 215 degrees Celsius.

The tank of the G-Pen is replaceable. You can use the device for one or two months before you need to replace it.

Battery Life

The G-Pen herbal vaporizer has an average battery life. It comes with a 900 mAh lithium-ion battery that can last you for a few hours. It takes about 3 to 3 hours to charge the battery when it is empty. You can choose to charge the device with an AC adapter and a USB charger. The vaporizer is designed to automatically shut down after 11 to 15 seconds.

How It Works
You need to press the power button five times quickly to switch this vaporizer on/off. Before you take a hit, press the power button for a few seconds to activate the heating elements. You need to keep pressing the power button when you take a puff. The device heats up very quickly. It takes the G-Pen less than a minute to reach high temperatures. You need to press the firing button for a few seconds to start the heating process.


It is not difficult to clean the G-Pen dry herb vaporizer. The device comes with a brush and other tools for cleaning it. You can use the brush to clean the tank while the mouthpiece can be rinsed in an alcohol solution.


You can get the G-Pen and other Grenco Science vaporizers from any top vape store. This device is usually priced at $70, but you can get it on Ejuice Pack for only $60.16.

Ejuice Pack does not only sell herb vaporizers but also vape kits for e-juice, concentrate, and essential oils. The shop also has a massive collection of e-liquids. You can sign up to get a vape subscription box every month from this store. You could get either 2, 3 or 5 100ml e-juice bottles for $34.99, $49.99, and $74.99 respectively.