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Refillable Vape Pen | Weed Cartridges Refills | O Pen Cartridges

vape pen refill cartridge

Do you know how to refill a disposable vape? Vape pens are an incredibly convenient and affordable way to enjoy weed and/or CBD. You can always purchase other cartridges to refill your vape pen, but refilling the cartridges you already own is way cheaper, the trick is figuring out how to refill them without breaking them. 

In this article, we’ll walk you through how to refill a disposable vape, including the entire vape refill process so you can reuse your cartridges and find the cheapest vaporizer pen refills possible.

vape smoke cart
Refilling is simple with just a few supplies needed. Photo: @Lucky's Vape Shop on Groupon

What you need to know about how to refill a disposable vape

Before you jump right in and attempt to tackle the task refilling your vape cartridge, there are a few things you should know about vape pens, cartridges, and the process. 

Not all vape pens and cartridges are created equal

While they may all look similar and operate in a similar way, not all pens and cartridges are the same. Some vape pens have specific types of cartridges they use, so you’ll want to research what type of cartridge your pen takes and what it will take to refill them.

Similarly, not all cartridges are the same. It’s not always possible to refill disposable vape cartridge. Sometimes, when you try to open them to refill them they just break or the only way to get them open is to break them, in which case the cartridge itself can no longer be used. Do your research before you jump into the task.

o2 vape vaporiser

If you want to talk quality vape pens, you're not going to want to leave O2 Vapes out of the conversation. Super sleek, portable and thoughtfully designed, we highly recommend these trusty vapes!


vape oil cartridge


O2 Vapes also sell cartridges separately. Most are 510 threaded, so if you already have a favourite vape, but need a new cartridge you can pick one of these up easily. Different sizes are available, though we like this one that holds 1ml of oil.


syringe refill vaporiser


Spending some dough on a syringe to re-fill your cart will make your life a million times easier! With O2's syringes you can also safely store your oil, giving you more bang for your buck.



discreet vaporiser travel

If you're looking for the ultimately discreet vaping experience, the O2 Decoy vaporiser is what you need. Using a pod-style cartridge, you can take the Decoy anywhere with you and no one will ever look twice!

Thank you to the pro photogs over at O2 vapes for the lovely product images!


You might not get it the first try

This process can be a bit challenging, especially with the small size of all the pieces involved. It may take you some practice to get the hang of it and it can be very frustrating. Keep practicing until you get the hang of it; once you get the hang of replacing a cartridge though the skill will stick with you!

smoke vaporizer high
Your trusty vape pen is even trustier when you know how to refill the vape cart on your own! Photo: @canjacksero

How to refill vape cartridge

If you’re wanting to refill e cig cartridges in order to make your cheap refillable vape pen even cheaper, it’s a pretty easy, 3-step process involving a syringe. However, if you don’t have a syringe, you can figure out how to refill vape cartridge without syringe. You simply follow this same process, but with an eyedropper instead of a syringe.


Step One: Unscrew the mouthpiece

The first thing you want to do is open the cartridge up, so you’ll need to know how to open a disposable vape pen. You can do this by twisting off the mouthpiece, which may take three or more full rotations counterclockwise to free the thread holding it in place. If you can’t get it off, the cartridge may not be able to be refilled.
Once you’ve got the mouthpiece free of the thread, remove it entirely. Be sure to set it in a safe place close by so you won’t lose it. Without it, your cartridge is totally useless.


Step Two: Fill with your oil

Using an eyedropper or a syringe, fill the cartridge with your oil. We find a syringe to be much easier with less risk of leaking products. We recommend leaving the cartridge attached to your battery to help you hold onto it better throughout this process, lowering your chance of accidents.
Be careful to not overfill your cartridge. Most cartridges are designed to hold 1 gram or 0.5 grams of oil or e-juice. Know how large your cartridges are and don’t overfill them, or you won’t be able to use them properly and you’ll be out the oil.


Step Three: Put your cartridge back together

Grab the mouthpiece from the safe place you put it in earlier and screw it back into place. You want to be sure the mouthpiece is fully in place and firmly screwed on, but you don’t want to overdo it. If you screw it on too tightly, you could break the cartridge. 
This same process can also be an effective way to figure out how to get all the oil out of a vape cartridge, should you have a problem with your cartridge or need to unclog vape cartridge.


What you need to know before you try THC cartridge refill

Before you jump into refilling your cartridge, you have to first know how to tell when vape cartridge is done. You wouldn’t want to put new juice in a cartridge containing other juice. Mixing juices isn’t always the greatest idea; you don’t know how they’ll taste or affect you together. Make sure you know your vape pen cartridge is completely empty.
If you have a clog that you can’t seem to get out, you can also use this method to remove the e-juice and help you better see how to unclog a vape cartridge. You may just need to put the oil into a new cartridge altogether.


Why you should refill your vape cartridges

Have you been wondering why people want to refill disposable vape cartridges rather than just buying new ones? Knowing how to fill a vape pen with juice can help you save money. Oil is far cheaper to buy than a new cartridge and it comes in larger quantities, so you can buy in bulk. 
It’s also better for the environment to refill the cartridges you already have, since it creates less waste. Rather than buying a new cartridge every time one finishes, discarding cartridge after cartridge, you can refill the one cartridge multiple times out of the same bottle of oil. 

thc cannabis cbd vape
Keep your pen filled with tasty, fresh oil! Photo: @luvbritedelivery

Where can you find oil?

If you’re after THC juice to refill your cartridge, you'll find it at a local dispensary. If you’re after CBD juice however, you can find it online, at a headshop, at a health food store, and sometimes even at big box stores. If you want to get HHC carts check out KoiCBd. 
You want to be sure that you choose an oil or e-liquid bottles that are compatible with the cartridge you have. They also make CBD- or THC-infused oil with olive oil that’s intended to be consumed orally. You want to be sure you’re using actual e-juice, not just oil meant for eating. 
You also want to make sure that the e-juice you choose is a high-quality product, safe for inhalation. You don’t want to put anything hazardous into your body. There is plenty of research available online for the many different e-juices available on the market; use the resource you’ve been gifted with and research the product before you buy it.

vape juice smoke

Mig Vapor produces high quality e-liquid so you can vape the best continuously. We chose the Strawberry Mango flavour, but they have many options for you to choose from!


e-juice oil vape 

If you want to make sure you're getting the best, get something that took months to perfect! Tommy's Blend sold by Mig Vapor is the masterpiece mixture that you didn't know your routine needed.

E-juice belongs in vapes, not product images, but you get the idea! Photos from the Mig Vapor webpage.

vape travel ocean marijuana
Take your pen on all sorts of adventures, always with a full cartridge once you know how to refill it on your own! Photo: @jnadz97


Whatever your reason for wanting to learn how to refill a vape pen cartridge, this simple, three-step method will help you do it right the first time! Using a syringe to refill your cartridge while it’s still attached to the battery will help you refill the cartridge easily and remove the issue the small parts presents. 
Why stop there? Now that you know how to refill dank vape cartridge, try researching these great topics:

Need more guidance before you feel comfortable doing it yourself? Check out this video!

Any lingering questions? Comment below!


Megan Medeiros Written by Megan Medeiros (BA)

Megan Medeiros has a bachelor’s degree in English and is currently working on a master’s in English at James Madison University. She's the owner and operator of Medeiros Writing, and has been working as a cannabis writer for the past three years, mostly following the legal climate of marijuana, especially in areas like California, Colorado, Oregon, Canada, and other legal areas.

This post contains references to products from one or more of our advertisers. We may receive compensation when you click on links to those products. For an explanation of our Advertising Policy, visit this page. All photos were sourced from | updated 2021

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