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Eleaf iStick TC 40W Mod

by Eleaf
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Original price £35.99 - Original price £35.99
Original price
£35.99 - £35.99
Current price £35.99
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  • 2600mAh battery capacity
  • Ergonomic design
  • Temperature control
  • Usable with nickel and titanium coils
  • Easy to read OLED screen
  • Variable wattage
  • Variable voltage
  • 40W Power level
  • Spring-loaded centre pin
  • Battery level indicator
  • Stainless steel components


  • 2mm × 22.3mm × 77.3mm
  • Available colours; black, grey, silver, blue
  • 2600 mAh capacity
  • 510 thread type
  • 1-40W rated output

What’s in the Kit?

  • 1 × iStick TC40W device
  • 1 × USB charging lead
  • 1 × eGo thread adapter
  • 1 × User manual

What’s New With The Eleaf iStick?

The eLeaf brand has always been associated with excellent design and manufacturing. The eLeaf iStick 40W TC Mod follows in the same footsteps making it a perfect choice for vapers looking for a temperature-controlled mod.

Several things stick out with this mod. First, it's one of the most affordable temperature-control mods on the market. It is also one of the most unique and innovative. Its unique iStick battery is one of a kind even among the iStick series.

Allowing you to play around with the temperature settings to find your sweet spot is definitely one of the stronger characteristics of the mod. This feature also saves you the trouble of dealing with extra-hot vapour.

The small stature of the mod is misleading. Despite the size, the mod will easily handle batteries as large as 2600mAh. The mod is fitted with 100% stainless steel threads and a stainless connector spring, durable enough to give long service without running into any problems.

Temperature Control

What sets the iStick 40W apart is the temperature control feature. The feature is unique to this particular model of the series. It's one of the more recent technologies available for mods. As most vapers will quickly realise, it’s a lovable and handy feature.

The temperature control feature ensures the temperature of the atomiser and that of the coil stays the same. This makes vaping much better. The vaping quality is top-notch, and you get better hits out of your device.

Using temperature control also delivers cleaner and smoother hits with elevated flavour quality. If you pair this feature with nickel coils, you can eliminate burnt and dry hits from your vaping experience. Because of this unique feature, temperature control mods are quickly becoming something to keep an eye on among the vaping circles.

It’s important to remember that you should only use titanium and nickel wire for temperature control coils but never for variable wattage or voltage coils.

Using the iStick 40

The state-of-the-art technology in the iStick 40W TC stops with the features and specifications. The device is relatively easy to use, mainly relying on the up and down buttons to adjust settings. Holding down the menu button switches between temperature control and wattage modes.

You don't have to worry about dealing with confusing menus. The device relies on an intuitive operation to deliver outstanding performance without messing around with the settings.

The iStick 40W TC is perfect for travellers and vapers who spend most of their time in the house. For travellers, the device can be switched off and locked to prevent accidental activation when it’s in your pocket.

When using the device, you can press the fire button with your index finger or thumb. The firing button responds well with plenty of resistance to prevent accidental pressing.

Once running, the performance of the device is hard to fault. The device works like a dream in the wattage mode. It ramps up efficiently and produces massive fumes in a few seconds. You can make adjustments in 0.1W increments. For larger increments, hold the button down to scroll through quicker.

The temperature control mode is just as smooth and easy to work with. The selected temperature is displayed on the screen. You can lock the toom temperature resistance by holding down the "fire" and "up" buttons for two seconds. This will ensure consistent performance. Once locked, there is a small padlock icon on the display that confirms it's locked.

The Eleaf iStick TC40W is a new innovation of the iStick series battery. It adopts a newly introduced technical element of temperature control.

The TC40W mod will bring out a unique vaping experience without any dry hit by adjusting the temperature setting.

Despite the small size, it can reach 40W with a large 2600mAh power capacity. Moreover, the all-stainless steel threads and elastic spring connector equip the iStick TC40W with strong wear resistance properties.

With temperature control function, less power use and lower e-liquid consumption. 

ELeaf iStick TC 40W Design and Build Quality

The design of the Eleaf iStick 40W is similar to that of the 20 and 30W iSticks. It adds a little flair by having curved edges that make the device more comfortable to hold and feel more compact. It’s one of the smallest box mods in the market currently.

Its OLED screen lies on the flattened edge of the mod with the fire and adjustment buttons to the side of the screen. The top and bottom parts of the mod have metallic-colour accents, with the rest of the body coming in various colours that include blue, grey, or silver.


Don’t let the miniature size of the iStick 40W fool you. It’s awash with incredible features that deliver an amazing vaping experience.

It has two modes: it can run as a standard variable wattage device or in the Ni200 temperature control mode. The variable voltage mode recognises the Ni200 coil. If it does, the TC mode is available. If you set it to TC mode and press the fire button, the mod will switch back to VW.

It's an essential safety precaution that prevents blowing up your battery by running a TC mode with a kanthal coil.

The control

The device has a total of four buttons. There’s the large fire button sitting above the screen. Below it, there are the adjustment buttons, and there's a smaller button between them.

Pressing the fire button five times in quick succession to switch the device on. For first-time users, the device will go straight to VW mode. You can adjust the power by using the up and down buttons. For this device, the power increments are in 0.1-watt intervals.

The TC mode is perhaps the most exciting function on the device. It is perfect when you're running Ni200 coils and shouldn't be tried with coils made from stainless steel or titanium.

With your Ni200 coils fitted, you can get to the TC mode by pressing the small button between the arrow keys and holding it for a second or so. The display will change from displaying wattage to temperature. You can further adjust the temperature in increments of 50C or 100F, depending on the preferred unit.  

OLED Display

The iStick 40W has a decent-sized screen especially considering its size. The screen is bright and easy to read. There's plenty of vital information on the screen, including the battery charge display, the resistance, the voltage and the wattage you're currently running. The main display will also show the watts or the current operating temperature.

You can flip the screen for accessibility, depending on how you're holding the device. For the iStick 40W, the flipping is done manually.


The Eleaf iStick 40W is powered by a built-in, non-removable 2600mAh battery. It’s enough to keep you running for several hours a day. If you’re not a constant vaper, it will easily last the day.

Charging the battery takes approximately three hours from a 1A charger. Luckily, the device has pass-through, so you don't have to wait the entire period to get your next vaping session. You can vape while it charges.