The Innokin Endura T20-S Starter Kit – Does It Live Up To The Endura Name?

The Innokin Endura T20-S is marketed on the Innokin website as being “great for vapers, great for smokers”.

Innokin Endura T20-S Starter Kit ColoursBeing designed for MTL vapers and focusing on flavour and throat hit this should appeal to smokers and ex-smokers primarily. A lot of long term vapers also use the MTL method and creating house fog isn’t really for them – flavour and throat hit are a priority.

Innokin have a range of vape pen devices with the Endura name. There is the Endura T18 and the Endura T20. Do not get confused as the T20-S is very different from the T20 and does not use the same coils.

The Endura T20-S comprises of a 1500mah battery unit with a Prism T20-S tank. The tank is a top fill.

Previous Endura tanks have been praised for their great flavour production – I know people who use the T18 regularly.

The Endura Prism T20S tank is also available as a separate item for use on other batteries or vape mods.

Endura T20-S ComponentsThe starter kit is priced at between £24 and £30 which is a great price for a starter kit.

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What’s In The Box

The Innokin Endura T20-S starter Kit includes everything apart from E-liquid to get you up and running. Plus some spares to help you maintain it.

I have noticed the newer retail kits also include a 1.5 ohm coil – my kit didn’t have this.

  • Endura T20-S battery
  • Prism T20S Tank (0.8ohm)
  • Spare Prism S Coil – Kanthal 0.8ohm (16 – 18W)
  • Spare Drip Tip
  • USB cable
  • Quick Start Guide
  • Warranty card
  • Spare parts (O-ring seals)

Endura T20S starter kit contents


  • Battery Capacity: REAL1500mAH (Supplied battery) 2000mAH (Optional battery)
  • Maximum Output Wattage:18W
  • Clearomiser Tank Minimum Coil Resistance: 0.6 Ohm
  • Maximum Output Current:6A
  • Maximum Output Voltage: 3.85V
  • Charging: Micro USB DC 5V/0.5A
  • Colour: Black, Stainless Steel, Blue, Red, Purple, Grey
  • Height: 132mm
  • Top fill
  • Vape whilst charging capability (pass through)
  • Detachable structure, easy to clean
  • Safety features (I cant find out what these are though! Very vague!)

Innokin Endura T20-S Starter Kit Features

Build Quality & Design

I received the black T20-S for review – but I also was supplied with the 2000 mAh battery in grey.

Endura T20-S ComponentsThe kit contents are wonderful spare drip tip, spare coil and O-rings. I like this a lot.

With the finish on the black battery being a shiny metal finish – trying to get a decent photo wasn’t easy! The finish on the grey battery is much nicer – a metallic grey paint finish.

Endura T20-S battery size 2000

Now from a really shallow perspective this isn’t the prettiest device I have used. The Endura T18 is a beauty and the Joyetech Exceed D19 is stunning. This, for me, isn’t.

The tank reminds me of the top of a lighthouse and it’s a bit “meh” design wise. Perhaps in the other colours this will look better. I know for most of us the performance is more important, but some people will buy something that is cute. I am a bit like that – but it needs to be cute with good reviews too.

T20S 1500 mAh battery sizeThe Tank:

Prism T20S tank

The tank has a standard 510 connection on the base so could be used on many other devices.

The top cap and mouthpiece unscrew easily and the tank is extremely easy to dismantle if you want to wash it out or change the glass.

I used the bulgy type drip tip the most – a straight one is also supplied. I didn’t think I would like the bulgy one but I love it!

The Battery:

The LED displays the battery charge by using a colour code.

  • Red = low charge
  • Yellow = half charge
  • Green = fully charged

The starter kit battery is 1500mAh however Innokin do produce a 2000mAh battery which can also be used. I have one of each battery – the black battery is the 1500mAh and the grey is the 2000mAh.

Simple battery charging- connect the small end of the supplied USB cable to the side of the battery and the larger end to a USB outlet port. The light on the button goes out when it is fully charged.

Endura T20-S Charging

In The Hand

This is a great size; everything is comfortably placed to fit well into your hand. It has a good balanced feeling too – some devices are very light at the top and the battery is very heavy, which makes them unbalanced and you have to grip them harder – as you usually only hold them where you press the fire button.

This is perfect doesn’t want to fall out of an open palm.

It’s slightly big to be classed as a stealth device, but it is a good size for pockets or handbags – so for out and about use it’s a winner.

I did find myself accidentally blocking the air intake holes a few times – so you will need to adjust your grip if it feels difficult to inhale from.

The lower capacity battery is a bit shorter in length. Both batteries have the same diameter and functions.

T20-S 2000mAh Battery in handEndura T20S 1500 battery in hand

How Does the Innokin Endura T20-S Starter Kit Perform?

The instructions are a bit lacking – there is a very thick instruction book – with one page for each language just giving safety warnings.

There is a card – see below – showing the main functions and procedures. But I am finding the info a bit sparse. I know what I am doing but some people may be picking up an E-cig for the first time and will need more info on best e-liquid type, how it works etc.

T20-S Instructions

There is no airflow adjustment on this, it would help as it’s a pretty airy MTL vape. Some smokers might prefer to have a slightly tighter draw to mimic a cigarette.

Basic operation

3 clicks of the fire button to turn this on and off. The light will flash red, orange and green to confirm it has been switched on and will flash twice when turning off.

Really simple operation, press the fire button to vape – no other settings or adjustments to contend with.

I did find however I kept pressing 5 times to turn on and off as this is the norm for most E-cigs!

How To Fill The Prism T20-S Tank

This is a top fill tank which I prefer. I did find there is little to grip to unscrew the top cap – you often end up removing the mouthpiece instead.

Endura T20-S Filling

  • Unscrew the top cap (not the mouthpiece which I did accidentally a few times!) Grip the top cap part of the tank to unscrew.
  • Pour or drip liquid into the space around the centre hole. Do not put liquid into the centre hole.
  • I found you can top it up to just below the top of the tank.
  • Screw the top cap back on.

How To Change The Prism S Coil Head

If you get horrible burnt taste or poor output this usually indicates the coil head requires replacing. Also check the tank liquid level as often an empty tank will cause the same problem.

To change the coil you will need to empty the tank – so either decant the liquid into a suitable container or pour onto a tissue and discard.

Prism T20S tank components

  • Remove the drip tip by pulling it out from the top of the tank.
  • Unscrew the bottom of the tank.
  • The coil simply pushes into the tank – make sure to align the cut outs and push the coil firmly into place. An old coil is removed by simply pulling it out from the tank.

T20s Coil Installation

  • Screw the bottom tank cap onto the tank.
  • Replace the drip tip.
  • Fill the tank to the correct level.
  • Leave the tank for 5-10 minutes for the liquid to soak into the coil. Also before using take a couple of inhales on the mouthpiece without activating the fire button.

Prism T20S Coil InstalledTips

A tip I found with my friends T18 tank, is to always make sure the drip tip is fully pushed into the top cap. The bottom of the drip tip makes a seal with the centre of the coil. If the tip isn’t fully pushed in this can cause liquid to enter the centre of the coil which can result in spitting and leaks from the bottom pin of the tank.

Another tip is to remove the drip tip when installing a coil – this makes sure that the coil is fully inserted into the tank when you secure it.

Flavour & Cloud Production

I used an 80% VG 6mg nicotine E- liquid (I have added additional nicotine to make this 12mg nicotine strength.) As the 0.8Ohm is a sub ohm coil these generally need lower nicotine levels and can handle higher VG liquid. But these particular coils require less wattage running to them to perform so a 6mg nic strength isn’t too harsh.

As I am trying hard to keep off the ciggies I have added extra nicotine to help.

Further Reading: What is PG and VG in E-liquid?

I have also tried the tank on another mod on its own to see how the tank performs.

0.8 ohm Prism S Coil

Prism T20S coil

I’m finding the taste from this in particular extremely impressive. Like its predecessor the prism tanks have always been well regarded for their taste and this is still the same for the T20S. Really superior taste to other tanks I have used.

With high VG liquid you should get more vapour production. This is an ok vapour – not massive clouds which I have got from the same liquid in lower resistance coils – but still good enough.

This is a definite MTL coil, quite restricted airflow – but it could do with a slightly tighter draw to satisfy a smoker.

But this is a cracking vape it really is very impressive. A wonderful throat hit.

The coil heads are available in packs of 5 for a reasonable price.

Later models of the tank and starter kit have a 1.5ohm coil included – this wasn’t in my kit so was unable to review this.

The Prism T20-S Tank Performance

My friend owns just the T18 tank on its own and uses it on a mod. So for those who want to just buy the tank on its own – I put this tank on my Eleaf Pico to test its performance.

The coil has the optimum power range stamped onto it of 16-18W.

So setting my Pico to 17W it performed exactly the same as when used on the supplied battery. Great taste, reasonable vapour – this tank is great.

This tank is also installed on the Innokin EZ Watt starter kit.

Battery Life

I had a 1500mAh battery supplied with the kit and an extra 2000mAh battery supplied.

T20S batteries

1500 mAh Battery (Supplied in starter kit)

Well so far after around 4-5 hours of me using this there is no drop in performance and the battery indicator light is still green – which means it is still above half charge.

After 6 hours of only using this device and no ciggies it has just gone down to half charge (orange light) – which is excellent really for a higher powered coil.

So the life on the 1500 mAh battery would get you through a day at work say 8 hours.

2000 mAh Battery (Available separately)

I haven’t got this battery to run out yet – at 7.5 hours the light is still showing green (above half charge) so I hope that gives you an idea of the battery life.

What I Like

Well the vaping experience on this for me as an MTL vaper who still is smoking is just incredible.

In the 5 hours since I got this up and running, I haven’t smoked a single cigarette – the flavour and throat hit are perfect. Oh and the battery is still showing above half charge in this time!

What I Dislike

The instructions are poor really. I think this area would need to be improved upon to help first time vapers get to grips with this.

The tank top cap is difficult to grip and unscrew as there is little to grip onto. You have to remove this every time you want to refill so it does get a bit annoying. I found myself having to use my sleeves over my hands to unscrew this.

Final Review Verdict

I think as a starter or intermediate kit is where this excels. A smoker would find this very satisfying and it totally performs in the same tradition as its predecessors the T18 and T20 – being a great starter kit to advise someone to buy.

It isn’t a high tech device or a cloud kicker, but a lot of people really don’t want that. They want a satisfying vape which keeps them off the ciggies. As I know people who rely on the previous models of Endura to keep off smoking – this does exactly the same job.

This probably wouldn’t be suitable for vapers using more advanced equipment or DTL vaper – but I do think they would be surprised at the amount of taste you get from a very simple tank with stock coils. A perfect back up.

If you had read my article “Stoptober for Me” you will see my struggles with the ciggies and the hard time I am having at the moment. So it will be very surprising for you to learn that in the 6 hours of using this so far I haven’t picked up a cigarette – so it’s looking to be a winner already.


  • Wonderful taste and throat hit.
  • A smoker would find this very satisfying.
  • Previous Endura Models have lots of fans who use them to stop smoking and this is a wonderful update to the range.
  • Very well built and sturdy.
  • Very easy to use and set up (apart from the tank top cap!)
  • Battery indicator lights really clear to interpret.
  • Great battery life.


  • It isn’t the prettiest design.
  • Lack of airflow adjustment.
  • Instructions are not very “instructive”.
  • When you lie this down – it rolls all over the place (I found it so hard to get photos of it!).
  • Have to empty tank to change coil.
  • If the coil isn’t seated properly or not fully in contact with the drip tip the tank can leak.
  • Only appears to be a 0.8 ohm coil available for this. The previous Prism coils will not fit.
  • Top cap removal for refilling is tricky. A textured surface around the edge of this would help.
  • Vapour production is ok – not amazing. But the taste and throat hit do compensate for this.

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Build Quality
Ease of use
Vapour volume
Prism T20-S Tank (on another device)
Replace if lost or damaged
My name is Michelle - I am 42 and an engineer and Technical Author by trade. I started vaping many years ago in the days of Tornado tanks, Ego batteries and Variable Voltage. My journey in vaping began again a few months ago and have started to move up in the shiny shiny gadget department and love vaping! I am currently still a smoker - however my cigarette usage is reducing daily and I am starting to prefer to vape than smoke. I am a huge dog lover and volunteer for my local dog rescue.


  1. Just bought this and already had an aspire k2 pen and an eleaf istick power box mod.
    I quit the evil cancer sticks last november and the wife quit just before christmas 2017 with the help of the other devices and patches from a local stop smoking clinic.
    These were bought as we will only be getting enough patches from clinic to tide us over for one more month so we wanted something that can burn higher nico juices and quench the inevitable craving the other devices won’t satisfy.

    I have literally been using this t20s for 10 mins and i entirely agree with everything your review says. I would defo recommend it on flavour and throat hit alone.

    Great review.

    • Wow thank you Cookie for your lovely comments.

      Its a lovely little kit, I have given mine to two friends who had the T18 model and they both absolutely love it – and its keeping them away from smoking too so it definately works!

      I do hope it helps you both and well done!

  2. My T20s is currently in the vaporized shop where i purchased it from about 3weeks ago for tests.the battery currently takes around 7 HOURS to fully charge and gives me around 3-4 HOURS vaping. when I first purchased it,it took around 3-4 HOURS to fully charge and got at least 7-8 HOURS vaping so i returned it.i have to go back tomorrow for results although i know the battery is knackered.understand they have procedures to follow but just give me a knew battery please.updates will follow


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