Lavatube Variable Voltage e-Cigarette: Impressions

Advanced variable voltage electronic cigarettes just got a lot more mainstream.  VolcanoEcigs announced their new Lavatube e-cigarette which is one of the most affordable variable voltage “tube” style devices on the market.  Volcano’s device is also the first adjustable voltage models offered by a mass market electronic cigarette company. Let’s get started with the Lavatube review and see what this gizmo is made of.

Update: If you’re curious to see how the Lavatube stacks up against the king of the e-cigarettes, check out the new Lavatube vs. ProVari comparison review!
Update 2: For the latest in Lavatube goodness, check out the latest and greatest with my Stainless Steel VTube Review

volcano lavatube e-cigarette review kit image
Picture an atomizer instead

What’s in the Box
The Lavatube is available in both starter kit format as well as a stand alone device only.  Opt for the kit and here’s what you’ll get:

1 Lavatube body
1 High-drain 18650 battery
1 Trustfire universal 3.7v battery charger
1 Lavatube 3.0Ω atomizer
1 Drip tip
1 Carrying case

For some reason, the review version of the device I received from Volcano lacked the atomizer, so I won’t be able to comment on the atty’s performance.  I’m not a big atomizer user as it is, so I generally briefly test them for the reviews before swapping out for a cartomizer or tank for the rest of my testing time.

The Lavatube is as the name implies a “tube” style e-cigarette.  The Lavatube is a very tall device, even when compared to other e-cigarettes that use the same, large battery.  I wouldn’t go so far as calling it big because the tube is fairly thin in comparison to other devices.

volcano lavatube review comparison image
Lavatube, ProVari (w/extended cap), ego 650mAh

Perhaps the most striking thing about the Lavatube is that it is surprisingly light for its size.  The weight makes the device somehow feel smaller when being held.  The tube’s aluminum construction is the primary reason behind the light weight of the device.

On either end of the tube are knurled end-caps.  The top cap which houses the 510 connection is fixed, while the bottom cap unscrews for battery replacement.  The patterns of the top and bottom caps are mirrors of each other with the bottom cap having small protrusions while the top cap has indentations that run along the edge.  I have to admit that design reminds me of a certain other device.

The bottom end cap’s bumps make it easy to loosen and tighten the cap, but I found they were uncomfortable to hold in certain positions when using the device. Speaking of end caps, I also found the action of opening or closing the cap to be rough in some spots.  This may eventually settle down as the metal on the threads wears a little with use.

I have the black version of the Lavatube (it is also available in chrome).  The color is a flat black and is textured.  The texture is great for keeping a grip on the device.  I noticed a couple of spots where the finish appears to have chipped slightly, leaving tiny white specks sprinkled throughout the finish.  I tried to scape the spots with a fingernail to get them to flake, but they wouldn’t.  These may be spots where the finish coat is slightly thin rather than flaking off.

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lavatube ecig by volcano review button image

On the tube is a red Lavatube logo.  Above the logo, near the top of the device is the small LCD screen and three buttons arranged in an inverted triangle pattern.  We’ll take a closer look at those in the next section.  To the side of the cluster and about 1/3 of the way down the tube is the activation button.

The button is made of plastic, however it very closely matches the finish of the tube.  When engaging the button, there is a satisfying, tactile click. The plastic appears to be of solid quality. However there is a gap between the button edge and the cutout in the tube that slightly takes away from the solid feel of the design.

I would say that the Lavatube is fairly good quality. It doesn’t feel flimsy or cheaply built. It lacks the overall polish of some of the higher-end devices I’ve reviewed before.  This is to be somewhat expected considering the Lavatube’s price point.

Lavatube review display image
Display is actually red

The Tech
While the tech features on the Lavatube aren’t quite as extensive as other advanced variable voltage devices, they are certainly impressive for a sub $100 device.  The main attraction of course is the variable voltage feature.  The device allows users to adjust voltage from 3.0 to 6.0 volts in increments of 0.1 volts.

Moving around the voltage spectrum is an amazingly simple affair.  The top two of the trio of buttons are a + and – button.  To change voltage, simply press the button that corresponds to where you want to go.  The LED display shows the selected voltage as you go.  A nice feature is that if you overshoot the voltage you want, there’s no need to go “around the horn” just press the – button to go back.

The third button is possibly my favorite.  It’s the on/off button.  A quick press of the button will turn the LCD display on (it shuts off when not adjusting the voltage).  Hold the button for a few seconds and it shuts the device off. No menus, just a power button.

The buttons are quite tiny as is the LCD screen.  However, some thought appears to have gone into their placement and action because I was able to manipulate the buttons without any real issues.  And I have kind of a fat thumb.

Despite having an LCD screen, there are no lights on this device during regular use.  This is kind of a personal choice thing, some people like an indicator light to know when the device is firing, while others either dislike lights or have no opinion.

lavatube e-cigarette review battery image

Aside from the adjustable voltage and LCD display, the Lavatube does also pack some additional features.  For starters, the voltage selection can be locked by pressing and holding both the + and – buttons simultaneously.

This device also features regulated output; as the battery charge drops, the device will keep the voltage at the same levels, until there’s not enough charge left in the battery.

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Pressing the on/off button 7 times reveals the battery charge indicator.  The screen will display battery power in volts ranging from 4.2 at full charge to 3.3 when the battery needs a charge.  The LCD display will also flash when the battery needs to be recharged.

Finally, the Lavatube also features protection circuitry to keep the device from being destroyed by rogue hardware.  If the circuitry detects a short or radically under-voltage condition, the device will shut off.  The circuitry also detects battery under or over charge and will protect the device in those situations as well.

lavatube e-cigarette review voltmeter image
Breaking out the testing gear

The final safety tech feature keeps the device from delivering too much power overloading its 2.5a button capacity.  The unique take here is rather than shutting down when you attempt to run too much voltage through a low-resistance atomizer, it drops the voltage down to around 3.5v.I have somewhat mixed feelings about the concept.

When using the device for the first time I was unaware of this feature. I was running a dual coil cartomizer in a tank.  I was excited at first because it appeared that I could run the dual coils at 5+ volts and it didn’t shut down.  However, I noticed the performance wasn’t that hot.

I tested the voltage under load and saw it was only running at 3.5v.I finally read about the protection circuit, so it made sense, but there’s no visual indication of when this kicks in.  I also found that I couldn’t really get about 3.7v on a dual coil, likely because of the fairly low amperage rating on the switch.  Conversely, the device seemed content to run a 1.7Ω cartomizer at 4.0v.

When I first used Volcano’s Lavatube, I immediately went with a dual coil cartomizer tank.  My assumption was that this device wasn’t as “smart” as the ProVari, so wouldn’t shut down running the dualies at higher voltage.

volcano lavatube e-cigarette review
Single coil tank

I was easily able to get the device to 6.0v without a shutdown.  But, I noticed the vapor was nothing like I am used to at such high voltages.Out came the volt meter, which said that it was outputting 6v, but under load the voltage dropped to 3.6.

I ran the same test with a different dual coil cartomizer with the same results.  Finally, I learned about the protection circuitry so everything made sense.Pushing higher resistance gear wasn’t an issue with the Lavatube, and the load voltage read within .1v of where it was set under load in most cases.

However, I did have some interesting findings.

When I ran a 3.0Ω atomizer above 5v, the output reading on my meter consistently rang in at 4.9v.  I swapped that atomizer out for a 3.7Ω model, and the device appeared quite happy to truck along at 6v.

Granted, I didn’t get documentation with my review sample, but I’m going to go out on a limb, that the Lavatube has additional fallback settings.  I was able to find another fallback at 4.2v with a 1.9Ω device.  I am uncertain if these are preset or if the Lavatube takes the voltage down to the highest safe voltage for the attached hardware.

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volcano lavatube review lavatube and battery image
Yes, the perspective shot

I think the safety fallback is a neat feature, but I am a little bit frustrated that there is no indication when the feature is engaged.  Your only hint is that the device doesn’t feel like it’s performing the way you think it should.

Once I got used to Volcano’s tube trying to protect me from myself, I found that it was a very reliable performer.  Thanks to the regulated output, the performance is consistant until the screen starts blinking at you to tell you it’s time to load up another battery.

The battery being a pretty meaty 18650 battery will keep you trucking along for quite a long time.  I easily got a full day of festivities from my unit.  The Lavatube comes with one battery.

If you want to bring your own, a flat-top battery or an IMR with a low-profile top would probably be in order.  A tall protected battery with a nipple top may be a little bit more than the tube can easily accommodate.  Unfortunately, the 18650s in my collection are all of the low-profile variety so I couldn’t test out that theory.


Too Long; Didn’t Read
Volcano’s Lavatube fits in nicely between low-cost but utilitarian vari-volt box mods and high-end devices like the ProVari.  While the device is a lot more stylish than the inexpensive boxes, it is a little less polished than the high-end vaping machines. With easy voltage adjustment and a readout screen, you get a good percentage of the features of the big boys without the extras like resistance meters.There are a couple of features on the Lavatube I wished my ProVari had, like a discrete on/off switch.  I’m still undecided about the step-down protection circuitry, and I’m still on a quest for a full featured variable voltage e-cigarette than is smart, but dumb enough to light up dual coil hardware at high voltages.

  • Very attractive price
  • light weight
  • Regulated power output
  • Easy to adjust voltage settings with readout
  • Discrete power button
  • Reasonably attractive design


  • No indication when safety voltage decrease is enabled
  • Small LCD screen and function buttons
  • Very tall
  • Could use a little more polish in fit and finish
  • A few functions still require weird button presses
  • Unable to run dual coil hardware at higher voltages

UPDATE: Volcano does not sell the Lavatube outside the USA.  International customers can purchase the Lavatube from ECig Wizard. Use code SteveVape for a 10% discount at checkout!

Product: Lavatube
Buy it from: VolcanoEcigsPrice: $99.99 kit, Device only $69.99
Also available from: Apollo, Vapor Alley
Discount: 10% off with code volcanoAFFC10 (one time use per customer)
Threading: 510
Battery: IMR 18650
Voltage: 3.0 to 6.0 in 0.1v increments

Disclosure: I feature affiliate links and banners for Volcano eCigs who sent me this unit for review.

Steve K

Hello and welcome to Steve K


  • >"I'm still on a quest for a full featured variable voltage e-cigarette than is smart, but dumb enough to light up dual coil hardware at high voltages."

    That's what I'll be waiting for in this price range. I'm guessing the low amp switch has something to do with the circuitry to get higher voltage out of a single 3.7v battery. A dual bat 3.5amp should do it. :)
    Nice review Steve.


    • You might be on to something there. I'm not totally certain if the limitation is due to the boost circuit used in single battery vari-volt devices or what. For some reason I assumed it's just a simple calculation the device makes based on the resistance of whatever hardware is on there. But simply sensing amperage is probably a more logical thing for them to do.

  • Awesome!!! definitely getting one…only 69.99?! wow

    • Yeah. Last I heard the standalone bodies will be available some time after the full kits. And Volcano has kind of been on island time getting these released, so not sure when to expect them.

      Also, if you check the summary section above, there should be a 10% off coupon code (hopefully it applies to the Lavatube too) you can use if you haven't used a code from them before.

  • Just got one. There is a voltage lock feature. Hold the + and – buttons. I only have a few attys and also an LR dual coil tank similar to the pic you posted above. I don't have a way to measure the voltage but it holds even at 4+ volts. Not sure if the LCD is just locked from changing the value or if the voltage is holding.

    • it shows the voltage setting, but not necessarily the output. I have a little voltage meter that can screw inline between the Lavatube and the tank which shows me the output while its connected. When it didn't exceed the amperage it was fine and held at roughly +-0.1v from wherever it was set. It was when I tried to run a dual coil above 3.7v or a 3 ohm carto at 6v is where I noticed the voltage deviated from what was set.

      The voltage lock is handy, every once in a while, I hit the wrong button and have to readjust if I forget to lock it.

  • it seems you are right. For LR (1.5-1.7 ohms) voltage will throttle back.

  • Hi Steve, great writeup as usual. To quote Russ, your writing truly is prolific. I have a quick question: do you know if there are any differences between the units Volcano will be shipping vs the already released European counterparts? I know that Volcano has been beta testing for a while.

    • Thank you, I truly appreciate that!

      To answer your question I'm not 100% sure, other than the chrome version will be exclusive to them. I know they said that they've worked with the manufacturer to improve some things, but to be honest I haven't had the best communication with their people. I'm not even 100% sure I have a retail version instead of a beta version. I asked them, but never heard anything back. Generally, I try not to do reviews of beta products because it's not a good true picture of a product someone can buy.

  • Whats the special link?

    * David A.K.A. eastXrebel *

    • For a while, Volcano had a link on their site to order the remaining pre-order lavatubes. Those sold out, and when the next shipment comes in that will be the one that's available to everyone, so I took the link out. I think I'll take out the updates altogether as they're starting to get a little too confusing.

  • I already have my tube and its really great, regarding prices and comparing with other similar devices. For 36,5€ what could i ask more? And yes, 18650 PCB will leave de bottom cap thread visible, for near 1mm. The diference between that lavatube and my blacktube is the logo on the bottom, the specs are totally the same and comply with the one i have, so i dont get what volcano means by saying they are tottally different devices.

    • According to a forum thread it appears that other than the logo and chrome version that will be available next month, Volcano has improved on the threads and the bottom vent hole. I also think they may have dropped the cutoff from 15 to 10 seconds. It appears that I have a pre-release version. I thought they sent me the finalized device, normally I don't like to review "beta" units because it's not always fair, but in this case the differences are fairly minor. It has a couple flaws, but for the price, I don't think there's really anything comparable.Thanks for the comments!

  • Sounds about right. with the 2.5 amp limit, 1.5 ohms @ 3.7 volts would be 2.46 amps. So really what users want, is a VV device with a higher current limit. You can prolly use some dual coil 2.5 ohms with this thing, and theoretically, it should get to 6.0 volts. Not sure, I dont own one.

    • The higher resistance dual coils to work at 6v on this and the ProVari pretty well. I'm still on a quest for an elegant mod that can run the 1.5 ohms at 5+ v.

  • >"This device also features regulated output; as the battery charge drops, the device will keep the voltage at the same levels, until there’s not enough charge left in the battery."

    Finally did some testing on various vaporizers and was a little surprised at how much the output voltage dropped as the battery drained at any given setting. I posted the chart at… Post #259

    After these tests I had a near uncontrollable urge (up to entering my CC #) to buy a V2 Provari to see if their claim of constant output voltage was true. :)


  • Just visited Busardo's Provari Review again and the charts show it to be a beautiful performer at each given setting. What I would be curious to see is what happens with the 1.5ohm DC carto that has pushed the unit to near max at 5v according to his chart. I would want to test the unit to it's very max, say 5.2v with a fully charged battery then test it again with a depleted battery to see if it would still perform at 5.2v.

    That is what I did with the Lavatube, all of those readings were the very max the PV could produce with a full charge and a partially depleted battery.

    BTW what did you think of Busardo's introduction for the Provari, I was truly impressed and I'm not even a Provari loyalist. :)


    • The ProVari will top out at about 4.9v before it fires off the E2 error with a 1.5 ohm dual coil. That's still pretty good, especially because it really is 4.9v

      Phil does some amazing videos, doesn't he?

  • Any VV device will perform the same with a 2 ohm single coil or 2ohm dual coil. The circuit sees 2ohm irrespective of how many coils there are. What will differ is the heat per coil only.

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