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This is the Eleaf iStick 40W Battery, VS also offers the Eleaf iStick 40W TC kit. The Eleaf iStick 40W TC is the latest iStick from Eleaf - it is replacing the older iStick 30W. The Eleaf iStick 40W TC is not only an improvement over the iStick 30W both in terms of build quality and, of course, adding an extra 10W of power, but it also provides the ability to use Temperature Control coils as an option. 

The Eleaf iStick 40W TC has two modes of operation:

  • Regular variable wattage mode to use with regular kanthal coils (same as previous iStick but capable of delivering up to 40W)
  • Temperature Control mode to use with special Ni Temperature Control coils

The Eleaf iStick 40W TC is the first Temperature Control (Variable Temperature - VT) mod from Eleaf. The Eleaf iStick 40W TC is the latest iStick version from Eleaf - the latest version of the hugely popular iStick series. The Eleaf iStick 40W TC is both a VW (Variable Wattage) and a VT (Variable Temperature) device. The Eleaf iStick 40W TC - as its name implies - can power a coil up to 40W. In Temperature Control (TC) mode - the Eleaf iStick 40W TC is compatible with Nickel coil, and in Variable Wattage (VW) mode the Eleaf iStick 40W TC can use any standard Kanthal coil. The Eleaf iStick 40W TC also comes with a battery capacity of 2600mAh. The Eleaf iStick 40W TC design is similar to the previous iStick 30W version with some improvements like a better quality power button - a repositioned 510 connector to perfectly fit any 22mm tank, etc...

The Eleaf iStick 40W TC comes in 4 colors:

  • Black
  • Blue
  • Silver
  • Grey

The Eleaf iStick 40W TC Battery Content:

  • 1 x iStick 40W TC
  • 1 x User Manual 

Temperature Control is the latest trend in the vaping community, it provides the ability to vape at different temperatures to achieve the best possible vape. Temperature Control devices are also very helpful to prevent coil burning which is important with cotton coils.

VS Comments:

At VS we select only the best devices in each category. Our temperature control devices must not only provide the ability to vape at different temperatures, but they must also be easy to use, the first generation of temp. control devices either did not work well and/or were difficult to use. We tested many of them, and had to reject them all, we hoped the technology would improve. We simply could not recommend to our members any of the first generation temp. control devices. Well... our patience paid off, the new Eleaf iStick 40W TC is easy to set up and enjoy. The Eleaf iStick 40W TC is for sure the most economical way to enter the temperature control world of vaping.  

Eleaf iStick 40W TC Features:

  • Dimension: 36.2mm x 22.3mm x 77.3mm or 3-1/16"L x 1-3/8"W x 7/8"D
  • Passthrough: The battery can be recharged while vaping
  • Ultra Large Battery Capacity: 2600 mAh
  • Operating Wattage: From 1W to 40W
  • Output Voltage: 0.5V-8.0V
  • Connector Thread: 510 stainless steel thread and spring loaded connector for best connection
  • Output Mode: TC-Ni / VW Mode
  • Temperature Range: 100-315℃ / 200-600℉ (TC mode)
  • VT Resistance Range: 0.05-1ohm (TC mode)
  • VW Resistance Range: 0.15 - 3.5ohm (VW mode)

Authenticity:

VapeShop only offers genuine products. Our members are increasingly reporting seeing clones in B&M stores and a few online sites. VapeShop strongly encourages manufacturers to use security authenticity code on all their products and we also encourage everyone to check it when available. 

Video Reviews (1)

Eleaf iStick TC 40W temperature control Review On TVC
By The Vapor Chronicles
Duration: 00:25:49
Published on: 6/29/2015

Reviews (65)

Showing reviews per page
dies way too quickly
I vape at between 5.0 & 6.0 watts, yet I can't even get a full day out of these batteries, I get about 8-10 hours before I have to switch to a recharged ones. Super disappointed, I 've owned several of the eleaf, 20w and 30w batteries, this one is not of the same quality.
| 7/22/2017 5:43 PM
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Great product
Love it! I have two of them. Holds a charge all day.
Great price and got here fast.  Thanks!
| 7/15/2017 10:21 AM
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Long lasting battery
This one really holds a charge
| 7/2/2017 1:27 PM
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Weak Battery
I normally use the 30w Eleaf,  I recently purchased the 40w ..With the 30w I can go a day and a half without having to recharge, but the 40w only lasts maybe 8 hrs...and I am only using it at 15.5w...I guess the pro to this, is the price. ....
| 6/18/2017 9:07 AM
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very well made
just got it but does what is should , holds a charge , don't take long to charge.
| 6/17/2017 10:39 AM
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I love this mod
We own 3 of them now, just because i don't wanna go crazy when i can't find it. Looking to get one more soon. We own the black, silver and the ceramic with blue flowers. Love it
| 5/29/2017 8:28 PM
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Love this mod
I just received my 3rd one. The other two still function fine. These are getting harder to find and I don't want to change to something else. Great prices and fast shipping. I highly recommend.
| 5/25/2017 3:41 PM
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best device i could find for $30
Good battery life and not too big. 40 watts is more than enough for me, I vape at around 16, rarely go over 20w. Temp control is a nice option. I bought 4 (1 for me and a few family members) haven't had any problems so far.
| 5/21/2017 4:31 PM
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LASTS ME ALL DAY!
AT A 16 WATT SETTING THIS LASTS ME ALL DAY LONG!
HAVE ORDERED 4 MORE UNITS. BEST PRICES ANYWHERE!
| 5/6/2017 7:47 AM
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eleaf Istick
I purchased this Istick for my son since I absolutely love mine! I've had my battery for probably 2 years now and have never had a problem with it. Eleaf puts out quality merchandise while also keeping it affordable.
| 4/20/2017 10:56 AM
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40 watt eleaf
I have 3 of these black, blue and silver each have there own juice the battery life is much better then the 20 watt I had before the heat setting is nice too buy it you will like it
| 4/3/2017 5:09 PM
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Eleaf iStick 40W TC
I use 2  the Eleaf 40 with a Melos2. One charges while I use the other. Had to replace one. Seemed to be something with the button and for safety I quit using it and ordered a new one. It was just over a year old. My other one is well over a year. Love this battery. I bought one for my daughter over a year ago. Melos2 is great also, easy fill & never leaks.
The Vape Shop is the best. They have great prices and ship super fast!  
| 4/3/2017 6:03 AM
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Best battery yet
Switched from the kangertec kbox mini to this.  Was tired of dealing with the 18650 batteries.  

I vape with 1.8 coils and don't exceed 10 watts, so this device fit the bill perfectly!

I was so impressed, bought another.

btw - switched from kbox tank (which constantly leaked) and went to the Aspire Nautilis.   perfect!
| 3/23/2017 8:38 AM
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excellent simple mod
just what you need if ou want something small and simple to get you going
| 3/20/2017 7:07 AM
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my Istick 49W
I have 5 of these Eleaf Istick batteries, love them last all day and then some.  can't beat the price and fast shipping from the Vape Shop.  Fit perfectly in my hand and never a problem with them
Thank you Vape Shop for your excellent prices and fast shipping.  You have a customer for life.
| 2/27/2017 4:44 PM
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Great Battery
Excellent battery. I smoke a lot and this battery will last a and a half!!
| 2/20/2017 11:30 AM
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Great Eleaf product
The 40 w is enough to keep away from cigs !!! For me.  Thank you!!!
| 2/7/2017 10:27 PM
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Fast shipping, great price
Nice durable product, charge lasts all day and then some.
| 1/26/2017 2:16 PM
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Eleaf iStick TC 40W
The Eleaf iStick TC 40W is the first mod I ever tried a couple of years ago and by far still the favorite for my vaping needs. There isn't much more I can say that hasn't already been said by other 5 star reviewers - great product, price and delivery. I will be reordering as the need arises!
| 1/26/2017 11:13 AM
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Exactly what I wanted!
I've had the same battery as this for over two-three years, and it's still working without any difficulties. When deciding upon an extra battery, I thought about a different style, but why should I take a chance on a different one?
This is an excellent choice.
| 1/11/2017 11:13 PM
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excellent price
Excellent
| 1/6/2017 5:13 PM
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The best choice for transportable vaping
After a full-body dip into sub-ohm vaping and the purchase of massive quantities of liquid I have found a great compromise with the iStick TC40W and the Aspire Nautilus tanks. The tanks hold about 5 ml of juice and the iStick produce great volumes of vapor at 14 watts. No, it isn't the room fogging cloud you get from sub-ohm, but it is a satisfying cloud and it reduces your liquid costs by about 75%. I do lung hits instead of mouth-to-lung and there is a bit of draw resistance even when set on the largest air intake, but it isn't all that difficult and it is well worth the reduced costs of vaping. The whole kit fits nicely in a shirt or jeans pocket and lasts a full day with a full charge. It means you can sneak a vape from almost anywhere because it is so portable.

Highly recommended!!!

Vapeshop.com has great prices, customer service and fast and reasonably priced shipping and I have scratched the confirmation and these are real Eleaf products and not clones.

The vendor is highly recommended too!!!
| 12/19/2016 3:04 PM
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Great Product at Great Price!
Great size and feel...have owned a few of these and keep coming back!
| 12/12/2016 10:26 AM
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Perfect battery!
Just the perfect size, hand feel, and power for the perfect price. I bought 2 of them. I love this battery.
| 12/9/2016 12:19 PM
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bang for the buck
Great Mod at a great price for a TC/variable wattage unit.  Very pleased and would recommend it. Vapeshop.com has great prices, customer service and fast and reasonably priced shipping.  
| 10/21/2016 4:18 PM
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fast service, great product
I love my new 40w iStick. My old 30w was tough as nails because i dropped it so many times.  I have the 40w now with a silicone sleeve to protect it. I love it so far.  Way too much power for me,  but love it
| 10/5/2016 6:43 PM
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Eleaf 40W battery
I actually have 5 Eleaf Mods, love how they perform, they are my favorite and never had a problem with them.  I will buy Eleaf again when and if any of them die.  several of my mods are over 2 years old and still work as good as they day I bought them.  
I give them 5 stars, a very good product.
| 9/23/2016 12:44 PM
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works great so far
I like the smaller size, it fits in my sun glasses case, but with the smaller size, the battery life is not great. I have to charge it every night and a few minutes during the day.  I wanted the built in battery with USB charge. I like the idea of temp control, but I haven't had it kick in yet, I have it set at 240 degrees F. Not sure how well it works. Overall, great buy, great value,  shipping was so fast, great website.
| 6/14/2016 12:29 PM
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Great battery!
Love Eleaf iStick 40W battery. It holds a charge for close to 24 hours. I'm going to buy one more plus the Melo 3 ati. Thanks WOV for great prices and fast shipping!
| 6/13/2016 11:32 AM
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Good Battery
Lasts all day with my Aspire Atlantis in temp control mode.
| 6/6/2016 10:24 AM
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Great battery!
This is a great battery for the price! Easy to set up and use. It charges quick. It's comfortable in your hand and easy to operate.  The reason for only 4 stars is that I think battery life could be a bit better.  I run it at about 10 to 12.5 watts and I get about 4 or 5 hours out of it. But, you can use it as a passthrough so it's no big deal if I'm at my desk all day. This is the 5th iStick battery I bought. Of those 5, I've had problems with 2 of them right out of the box with the fire button sticking and not turning off or not firing at all, almost like there was a short or something.  Overall, for the price, they are great batteries!
| 6/5/2016 8:41 AM
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Eleaf Isticks
I love my new Eleaf Istick 40W.  I now have 5 Isticks all with different flavors.  The Eleaf''s fit well in my hand and all of my tanks fit and I don't have to constantly charge them.  Great products from Eleaf and the VapeShop has the best prices and shipping and delivery is the best.  Thank you for your superior service as always.
| 5/30/2016 2:15 PM
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my favorite battery.
Great service. Only takes 3 days to receive order. So much cheaper than local stores.
| 4/28/2016 6:01 PM
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very good battery
Great battery, holds charge all day
| 4/26/2016 5:58 PM
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Excellent Battery
I am very happy with the purchase of this battery. It works well with the Aspire Nautilus Mini, easy to hold in your hand and pretty. I plan to order another. World of Vape is first rate and shipping is Jimmy John's fast.
| 4/14/2016 7:19 AM
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For my purpose GREAT!!
I don't use the temp control feature because I don't sub ohm. Frankly I bought this because it's cheaper than the 30 Watt iStick, and with a bigger battery...can't go wrong. Basically it's a 30 watt on steroids with options.  My only comment and reason for 4 stars is that it's backwards!!! The atty sits on opposite side in relation to the fire button.  A little thing like that means the difference of using your thumb or index finger to fire with.
| 4/7/2016 2:50 AM
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great battery
Works great and holds a charge all day
| 4/4/2016 1:05 PM
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40watt Istick Eleaf
I have been use the 20watt Eleaf for a year but the battery went out on one. Bought this 40watt and it is even better then the 20watt. I will be buying some more as I use 3 and use the different colors to keep my e-juices separated so I know what is in each one. The price was the best just like all things wov sell.
| 3/20/2016 3:52 PM
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Great battery!
Works great with mini nautilus. Love. :D
| 3/5/2016 1:27 PM
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amazing
Came with full battery life. I love the feel of the button, and the battery life is great. Awesome purchase.
| 2/24/2016 11:34 AM
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Great Battery
I love this battery. It's light-weight and feels comfortable in the hand.
It takes a long time to charge, but also lasts a long time.
Actually I like it so much that I also ordered a 50 watt iStick :)
| 2/16/2016 3:42 PM
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Great product the iStick TC 40W
Not only am I impressed with the product but also with World of Vape. First off the 40W I ordered from them preforms better than any other I have purchased to date.

Second, World of Vape had it here in under 3 days. Pretty great service. I ordered on the 3rd and it was delivered around 9 am on the 6th. Can't beat that kind of service.
| 2/15/2016 10:52 AM
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Great Battery
I used to use the pen style battery that came in my Aspire kit. Don't get me the wrong that battery is good but this battery is great! It hold its charge for a long time and the controls are great.

I would definitely recommend this to anyone looking for a battery option.
| 1/26/2016 8:19 PM
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best for temp control
Its perfect size very compact but packs a punch i have the melo 2 on it with tc coils from eleaf and man the sky must be falling cause iam blowin clouds battery life is great i steady vape all day and have not had to stick on charger and eliquid consumption is dropped would recomend to any one!!
| 12/26/2015 9:23 AM
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Nice little mod for the price
I've been using this for a week with my ego one tank and its been working perfectly. Moderate use uses 50 to 65% of the battery by the end of the day so no complaints here
| 12/23/2015 1:23 PM
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nice
Upgraded from 30w istick...i like this one.
| 12/23/2015 1:05 PM
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Works as described
I have had this mod for about four months now and it's still working fine. Very nice mod for the price only problem I have with it is the ohm reading is always off that's the reason why the four star rating. As for vapeshop.com aka  wov they are the best! I only order from them quick delivery best prices for real products.
| 12/23/2015 10:13 AM
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Great product and GREAT price!
I like buying your products because it is quick convient and I save money plus they are good quality!
| 12/22/2015 9:56 AM
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Love this battery
So far love everything about it plus was more than 50% savings over local shops.  Have yet to try the TC ability.  Fastest shipping on the planet!!!!!









| 12/15/2015 4:52 PM
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WOW
This was my first TC mod .. & I have to say it was nothing short of stellar ! Love it ! Best price .. fastest shipping & best service ever ! People .. BUY from these guys ! I did ! You won't be disappointed !
| 12/11/2015 9:57 PM
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much better than pen style batteries
Lasts all day. No need to carry charger. Much cheaper than local shop.
| 11/28/2015 6:03 PM
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Best Price
My local shop sells this same battery for $59.95. I went on line & ya'll had the best price. My bride loves it. I have a 100w that is great too. Again good product, good price, & fast shipping.
| 11/23/2015 3:15 PM
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Istick 40
I like the slim design and it works great. I still prefer my Istick 50 due to the much better battery life.
| 11/23/2015 11:34 AM
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Love it
Very happy with all your prices and service
| 11/21/2015 9:34 AM
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Great improvement on the 30W model
I had a 30w model fail in less than 3 months. I now have 3 of these and no problems. I like the button and air system MUCH better on these. Soon I plan to check out temperature controlled.
| 11/17/2015 9:57 PM
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Great for the price
Great for entry level TC vaping. The battery doesn't last as long as I'd like with a sub-ohm tank but for the price you can't beat it.
| 11/13/2015 8:24 PM
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I like it buy I miss my old istick
This one works just fine, it's just heavier, which also means it's probably more durable. I just miss how lightweight my 20w one was. Shipping was exceptionally fast which is what I love about WOV.
| 10/6/2015 11:57 AM
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<3
Love this Battery!
| 10/6/2015 7:28 AM
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Awsome!!
I first bought the eleaf melo with the 40w Istick and fell in love with it.  Then I just bought the Aspire Triton tank with the vair-t Atomizers with the temp control and that is just friggin amazing!!!!  Extreme control on every aspect of this setup.  HIGHLY recommended!!!!
| 10/1/2015 5:02 PM
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Does what it says
I'm afraid I like the 20W better.  I can't seem to get this one adjusted right for the taste I want.  I am sure it is just me ;)
| 9/27/2015 11:19 AM
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better version
Love the new version of the istick. Have not had any problems with the thread stripping.
| 9/21/2015 9:54 AM
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Good Battery
Good reliable battery.  Lasts same as the 30W, just a little bigger.  I prefer the 50W because it lasts twice as long (2 days) with heavy use.  Fast shipping and great price as usual with WOV.  Best site I've found.  Thanks WOV!
| 9/19/2015 8:40 AM
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ABSOLUTELY REAL LEGIT iStick
I was hesitant to buy an iStick anywhere because of all the rampant counterfeiting.  Took a a chance with WOV and they came through with a 100% genuine iStick with an UNUSED authentication code.
| 9/8/2015 2:04 PM
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Eleaf iStick 40W
Purchased 2 of these; one for me and one for my wife.  Arrived quickly and work perfectly.  Charge is quick and the life of the battery is very good considering the smaller capacity and smaller "print".  I like it better than my Eleaf iStick 50W because it's lighter and easier to carry.  
I can recommend this product to anyone seeking a second, or back-up battery!
| 8/31/2015 2:34 PM
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Fantastic value, top performance
Does exactly as advertised and at the best price!
| 8/31/2015 10:47 AM
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