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Caliburn A2 Device





The Caliburn A2 is ONLY compatible with A2 Pods.

UWELL Caliburn A2 Device

The best just got even better. UWELL has put years of feedback into designing the new Caliburn A2. Experience a smooth and seamless upgrade from the original Caliburn with noticeable improvements in flavor and performance. Here at TBD Liquids, we love it and know you will too!

Caliburn A2 features:

  • Convenient fill-level window
  • New leak-free pod design
  • Fast USB Type-C charging (cable not included)
  • Consistent 15W output (30% increase from original Caliburn)

Existing Caliburn features:

  • Automatic inhale & manual button activation
  • Convenient top-fill pod system
  • Durable aluminum alloy construction
  • Device safety lock
  • Multiple short circuit protection
  • 520 mAh rechargeable battery
  • LED battery life indicator light


    The Caliburn A2 is nearly identical in size and weight to the original Caliburn. See our full comparison of the Caliburn A2 vs. the original Caliburn for more information.

    • Height/width/depth : 110.1 mm x 21.3 mm x 11.7 mm
    • Weight: 31 g
    • Resistance range: 0.9Ω ± 0.1Ω
    • Battery capacity: 520 mAh
    • FeCrAl meshed 0.9Ω Caliburn A2 refillable pod
    • E-Liquid capacity: 2 mL
    • Draw activated / manual button
    • LED battery life indicator light
    • Gold-plated magnetic pod bay
    • PRO-FOCS Temperature Technology
        User Manual



        How to turn the device ON/OFF

        The UWELL Caliburn A2 relies on a button sequence to the turn the device on and off. With the device in hand, press the firing button five times to turn it on. Repeat the same process to turn it off. It is recommended that you turn the device off when not in use to prevent it from going off in your pocket or handbag. This is an additional safety feature that is also meant to protect children.

        Device activation explained 

        While there is no superior way to vape, the Caliburn A2 can be used as both a draw-activated device or a button-activated device. UWELL has implemented a failsafe that defaults to the latter in the event that the other method fails. For instance, if the fire button isn't working for some odd reason, the system will automatically disable the button mechanism and resort to its draw activated method. The original Caliburn was one of the first devices to introduce this feature.

        Understanding the power output

        Unlike the original, the Caliburn A2 power output does not decrease with battery life. It puts out a consistent 15 watts with its 0.9 ohm coils, down to the last puff. It no longer utilizes a direct voltage output, so the performance is not dependent on the current state of the battery. In other words, it puts out the same amount of power from the beginning to the end of its charging cycle.

        How to fill the pod/cartridge

        Snap off the mouthpiece then simply insert the tip of your bottle into the fill valve and fill it up until you reach the max fill line. Be sure to fill using the large red fill valve and not the other two holes! The valve will open up automatically for your bottle when you insert the tip of it.

        The Caliburn A2 pods have a 2 mL e-liquid capacity and a top fill design similar to the original. However, the mouthpiece is now a bit easier to remove. So now you can just pop it off while the pod is still inside the device, which was not as easy to do with the original Caliburn device.

        How to install the pod

        Installing a pod on the Caliburn A2 takes almost no effort. All you have to do is slide the pod into the device and the magnetic connection takes care of the rest. The pods will automatically click into place and are secured by strong magnets, yet are still very easy to remove for re-filling.

        Understanding the pod’s coil

        The Uwell Caliburn coil is integrated into each Caliburn A2 Replacement Pod. The pods are optimized for nicotine salt e-liquids and feature a 0.9-ohm meshed coil, which is designed to fully atomize the e-liquid while providing better flavor, an increase in vapor production and a smoother throat hit than the original Caliburn. The new A2 pods also provide more airflow than before to match the 30% boost in power—so you can enjoy smoother and cooler puffs with extra flavor!


        What's new on the Caliburn A2?

        More Power

        The Caliburn A2 uses approximately 30% more power than the original Caliburn. This makes it produce more vapor per hit so you might feel like the nicotine level you're used to is too high.

        I recommend cutting your nicotine level down if you feel like you're getting too much nicotine too fast. It was a bit of an adjustment period for me, but I was able to stick at my same nicotine level and I just take slightly shorter hits and vape a little less frequently than I did with the original.

        Faster juice consumption

        You're going to go through the juice in the pod a lot quicker! This is especially true if you are using a nicotine strength that is too low for your tolerance level. Make sure you get into the habit of glancing at your fill window so that you get a feel for how often you need to refill your pod.

        Faster charging

        The A2 charges much faster than the original Caliburn. So if you can spare a few minutes to toss it on a USB charger, it'll go a long way. Half an hour on the charger is all you need for a full charge. Five minutes is equal to nearly 20% of a charge.

        Improved LED indicator

        The LED battery indicator thresholds have changed. (Full details in the manual.) On the original Caliburn, the LED would turn blue at 40%, whereas on the A2 the device LED turns blue at 60%. So, the Caliburn A2 gives you a more realistic indication of your current battery life status.

        Charger not included

        The device kit does NOT include a USB-C charger. We hate this trend, but more and more products are coming out without a charging cable in order to maximize profits. However, if you purchase the Caliburn A2 Starter Bundle, it comes with a USB-C charging cable for free!

        Same 520 mAh battery

        The A2 has the same 520mAh battery as the original Caliburn (unfortunately). Because it uses 30% more power than the original, it will also lose charge faster. So if you puff on the A2 the same amount as the original Caliburn, it's going to feel like you lost battery life.

        If you use the A2 less frequently than the original, since you're getting more nicotine per inhale, then you won't notice a difference. I highly recommend having a second device to make sure that you have a backup to use for the entire day.

        Should I upgrade from my original Caliburn?

        That's entirely up to you! The best part about the Caliburn A2 is that it includes everything we loved about the Caliburn but with significant improvements. It charges up quicker, provides a stronger and more flavorful puff and is way easier for monitoring juice levels. So, if you love the Caliburn but wish you could crank up the volume—then you might want to upgrade to the A2.

        What's the "Caliburn" hype about?

        So we've been using and testing the many nic salt devices that have come out for the past few years and we hadn't found one that we really thought hit the mark for us.

        We wanted a device with the following:

        1. Great flavor

        2. Long-lasting pods

        3. Great battery life

        4. Solid build quality

        5. Affordable

        The Uwell Caliburn and the new Caliburn A2 were able to meet these points for us, which is why we decided to pick them up and sell them to our customers nearly at cost. In fact, if you get the Caliburn A2 Starter Bundle, it's a free upgrade considering the total value of the other items!

        How easy is it to use?

        The Caliburn A2 is as easy as it gets. The device comes fully charged out of the box. No real instructions are needed as the device itself is very straightforward. Simply take the device out, snap off the mouthpiece from a pod and fill it up with our Handcrafted Salt E-Liquid. With a fresh pod, let it sit for at least five minutes before using for the first time to allow the coil time to wick.

        We believe in making vaping as easy and convenient as possible, and the A2 Caliburn fits the bill.

        How long does the battery last?

        Though the raw specs of the device's battery are not very impressive (especially when compared to the specs of a sub-ohm device) you will find that in actuality the battery should last you most of a day if not an entire day. The Caliburn A2 has no taper-off so that means it will continue to hit as perfectly at 20% as it does at 100% charge.

        The device itself charges from dead to full in about 35 minutes. From personal experience, I can tell you that I need to charge my Caliburn A2 on average twice a day if I am chain vaping.

        How long do the pods last?

        On average you should be able to get roughly three weeks to a month on each A2 Caliburn pod when using our handcrafted salts. That's almost two times longer than the original Caliburn pods!

        When using regular commercial nic salts which contain high amounts of sucralose, your mileage may vary. You'll be lucky to get a whole week out of them when using overly sweetened juices.

        What juice can I use with it?

        Both freebase and nic salt juice works with the Caliburn A2. The optimal PG/VG ratio for the Caliburn pods is around 60/40. Most commercial nic salt products are formulated with a 50/50 ratio which can cause heavy leaking or spitback with Caliburn pods.

        You'll also want to choose a nic strength that works with your tolerance level and with the power output of the device itself. We found that high nicotine juices hit even harder in the Caliburn A2.



        We take pride in keeping our customers satisfied. That is the main reason why we have stayed in business for seven years, aside from our awesome flavors. We make the whole experience easy.

        If your pod or device needs to be replaced, we take care of it directly. This is the only site that offers a full-service experience for the Caliburn, or for open-end devices in general. We're not just about pushing units, we go the extra mile to solve any problems you might run into, instead of making you hunt down the manufacturer yourself—like most online shops will have you do.

        How to register

        We highly recommend registering your products on our site. You'll be accommodated either way, but it is the easiest and best way to keep track of your serial numbers. If you ever run into an issue, simply file a claim directly using our Warranty page. Once we receive your claim, we will hook you up with a brand new device or a pod pack for your troubles.

        Customer Reviews

        Based on 30 reviews
        Dave M.

        Caliburn A2 Device

        Jeremy K.
        Flawless as usual

        TBD is always a top notch company with top notch products! I recommend them to everyone and have sent many happy customers their way. They stand behind their products and could teach customer service to many companies out there! I can't say enough good about them!

        Greg H.
        Caliburn A2

        I love the Caliburn A2!! Does not leak, hits great and most of all it's so compact I can take it anywhere! Thanks for the great service TBD!!! Definitely recommend them!


        The A2 just rendered my old Caliburn obsolete. The draw is so smooth and triggers easy. My old Caliburn is still fully functional and I still have several extra pods left but the A2 really is a breeze to use and is now my main pod! Awesome! Thanks for recommending this to me TBDL!

        KD G.
        A2 Great Improvement

        Love the new A2. Pros: More Flavor, More Vape, Easier Fill, No leakage, Pods last 5x longer. Cons: Burns thru Juice Faster.

        Caliburn A2 | Original Caliburn  |  Nic Salts  |  E-Juice  |  Flavor Packs  |  Checkout



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