How To Refill A Vape Pen Cartridge? (Step-By-Step Guide)

How To Refill A Vape Pen Cartridge

Vape pens are one of the most popular ways to enjoy everything from simple nicotine to cannabis oils.

And whether you’re using a beginner using disposable pens, or a seasoned expert, learning how to refill a cartridge is an essential part of the vaping experience.

Not only is it environmentally friendly, but it can also save you lots of money too. And every time you refill, you can experiment with brand-new flavors, textures, and e-liquids.

But how exactly do you refill the cartridge? As small as a vape pen is, it can look complicated, especially when taken apart. Well, we’re here to help.

This article will show how easy it is to refill your pen cartridge in just a few steps and minutes. We’ll also share expert tips to ensure you get the most out of each puff of your new cartridge!

Six steps to refilling a vape pen cartridge?

Below is a simple way of refilling an empty vape pen cartridge. Whether you’re refilling CBD oil, wax, or nicotine e-juice, the method is more or less the same.

The only equipment you’ll need is a refill syringe (eyedroppers or a small funnel can also work in some instances) and paper towels to catch any excess fluids.

1. Removing the vape pen’s mouthpiece

To refill your vape pen, you must first remove the mouthpiece of your pen. Most of these are straightforward to detach, involving a simple twist and pull. Once released, put the mouthpiece to one side.

If you find that the mouthpiece won’t come off, or are afraid of breaking your pen, check its manual to ensure it’s a refillable model.


2. Clean your cartridge

Especially if you’re filling in a brand-new flavor, giving your old cartridge a thorough clean is a good idea. This will improve the taste of vapor and ensure the right level of airflow is achieved during every puff.

Dip a clean cloth or a cotton swab in rubbing alcohol to remove excess liquid and build-up. Rinse with cold water afterward to ensure no harsh tastes are left.

Fill up your syringe or eyedropper

3. Fill up your syringe or eyedropper

Now that the mouthpiece has been removed, you can better access the vape pen’s cartridge. Take it out and put it to one side. Using your refill syringe (or eye dropper), draw up your replacement e-liquid or distillate oil. You might consider adding a layer of terpenes to enhance the aroma and potency of the vape juice.

4. Fill the cartridge up slowly

Please pay close attention to any markings on the side of your refillable cartridge, as you do not want to overfill it. Inject your e-liquid slowly, only doing a three-quarter turn to prevent air bubbles from forming.

If an air bubble does, in fact, form, you can gently tap on the hard surface of the cartridge or shake it gently to dispel it.

5. Replace the mouthpiece

Once your cartridge has been fully refilled, it’s time to screw the mouthpiece back on. Be gentle with this step, as any unnecessary force on the mouthpiece’s threads can cause a break.


6. Allow it to set

Before using your vape pen, you should prime the cartridge. This allows the wick to thoroughly saturate in the new e-liquid and provides a much better vaping experience. Place the pen upright for five to ten minutes, allowing the liquid to distribute evenly inside the pen.

Allow it to set

Expert Tips:

  • Always check your pen’s manual beforehand. Some will require particular cartridges, while others may not be refillable in the first place!
  • Place paper towels or tissue around your workspace to collect any spilled fluids.
  • It is better to underfill your cartridge than overfill. Too much e-liquid can put immense stress and strain on the pen’s ignition, causing it to lose power quickly.
  • Accidents happen – if, for some reason, your refilled cartridge breaks or is incompatible with your pen, don’t throw it out just yet. You may still be able to retrieve the injected oil!
  • Use a small funnel or eye dropper if you don’t have a syringe handy.
  • Be careful not to overfill your cartridge, as it can clog up or burn the coils faster than expected.
  • Ensure you properly secure and seal your mouthpiece back on after refilling.
  • When refilling, use this opportunity to clean the vape cartridge and tank, especially if you use a brand-new flavor. You can also inspect the battery and its connectors for any signs of corrosion or damage.

Expert Tips


Whether you’re using disposable vapes that have run out of juice earlier than expected or simply topping up your trusty pen, refilling your cartridges is something you should learn sooner rather than later.

Refillable cartridges are not only cost-effective, but they can also allow you to pick from various new flavors while still using your original vaping devices.

As our article has shown, refilling your cartridge is relatively easy, and you only need a few pieces of equipment and two or three minutes to complete.

The essential thing in any refill is not to overfill your cartridge and to inject your liquid slowly and steadily. This will prevent annoying air bubbles from forming or losing valuable oil in leaks and spills.

If you still have questions about refilling your vape pen cartridge, please comment below with your make and model.

But remember:

  • If the mouthpiece of your vape pen doesn’t detach, chances are it’s not refillable.
  • When injecting your new liquid, do a maximum of three-point turns – any more, and air bubbles can form.
  • Remember to prime the pen before use. Allow enough time for the coils and wick to saturate before using it.


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