After releasing the 25mm Subtank Organic Cotton Coil to the world at the end of last year and receiving much acclaim from the vaping community for its unique design features, one small problem remained, its size!

Seating it on many of the smaller devices and some larger models too, there was a slight overhang due to its 25mm diameter.

Some people found to be not aesthetically pleasing to the eye and as a consequence of this Kanger have stepped up to the plate once again by not just releasing one, but two new versions of the 25mm Subtank.

The Subtank OCC in a Mini 22mm version & a Nano 18mm version that should meet with the past requests of their ever growing fan base from around the world and allow finally for the perfect fit.

Kanger has never been a company to let the grass grow under their feet. Always paying close attention to what the market requires from them in a timely manner, and always delivering a product that is sure to please as many people as it possibly can which is a testament to the dedication shown by not only the R&D team but the company as a whole. Kanger is always striving for perfection and satisfaction for its customers.


To keep this review as short as possible (not easy). I have curtailed the full description of the packaging this time however you can read a complete description of the contents of each in the What’s New section below. What is important is to make sure you read each manual fully along with the instruction leaflet for priming your Organic Cotton Coils before use to get the best possible vaping experience from each, and not burn the Japanese cotton.

Please be aware that these are pre-production models sent to me by KangerTech for evaluation and review prior to their full production release so there may be slight changes if required to the final designs. Also please be sure to check the warranty period should it be included with the final production model of these tanks before purchasing.

The new Authenticity code found on the products lower front part of the internal boxes will apply to each new KangerTech product and include running changes for old models taking effect from late October 2014.

Further details of the New Authenticity code can be found by following the links below: 1.User Guide  2. Where you can find your Authenticity label 3. How to use your smartphone to scan the code.


What’s New

Both versions of the new tanks have seen small but necessary improvements made to them since the production release of the 25mm Subtank OCC one of which is new O-rings as there had been reports of leakage on some of the earlier models of the 25mm version.

I understand from Kanger that they have sent additional O-rings out to their service centres, so if you were unlucky enough to experience this you could take your 25mm Subtank OCC in for evaluation and if it is a manufacturing fault, they will replace the O-rings with new ones free of charge.

Please contact the service centre first before attending would be my advice here to save any unnecessary waiting time if you feel this problem exists with your personal model, and as always you can contact KangerTech directly if required using the details supplied at the end of this review. NOT ME!

An improved airflow control ring has been added allowing for even more vapor production along with easier fitting of the RBA section inside the Subtank Mini compared to that of the 25mm Subtank OCC, so now you do not have to remove the two screws and change the top cap over. Nice touch!

Please be aware that the RBA section of the 22mm Subtank Mini is designed solely for use in the Subtank Mini only, and should not be used inside 25mm Subtank OCC.

Likewise, the RBA section of the 25mm Subtank OCC has been designed for use with the 25mm Subtank OCC and should not be used inside that of the 22mm Subtank Mini.

Also, neither fit the Subtank Nano so only use the supplied 1.2 Ω & 0.5 Sub Ω coils inside the Subtank Nano. Interchangeability of both the 1.2 Ω & 0.5 Sub Ω coils works with all three Sub tanks (25mm 22mm & 18mm) showing once again how well these tanks have been thought out.

A modified design to the smaller RBA section has been added, and it is important for builders to remember to cut off any excess wire to avoid shorting due to the close proximity of the chimneys outer wall. And always remember when securing it back on after a build not to over tighten it as it will be very difficult to remove it again possibly requiring additional purchase that could cause unnecessary damage to the threading.

Constructed from stainless steel and Pyrex Glass here is a breakdown of what you can expect to find inside the box of both tanks before setting them up as you would wish to use them on your device, making sure you have enough power to take full advantage of the Sub ohm features included. You can always check this first with the shop staff.

A choice of O-ring colours has been added by request to suit your own personal tastes so be sure to check these out on their website.


Subtank Mini Includes

Kangertech_Subtank_Mini_Atomizer_with_Box__05727.1422401597.300.3001 x Subtank Mini
1 x OCC Sub 0.5 Ω (15w-30w)
1 x OCC 1.2 Ω (12w-25w)
4 x RBA Coil (Japanese Organic Cotton)
1 x RBA Base
1 x Screwdriver
2 x Screws
1 x Manual
The Subtank Mini combines two different configurations in one tank; these include the RBA setup, and Organic Cotton Coils, which come in 0.5 Sub Ω & 1.2Ω’s.
510 Connection
Pyrex Glass
4.5ml Capacity
22mm Diameter
Durable Structure
Enhanced airflow system
Height w/o Drip Tip: 48.mm
Height with Drip Tip: 63mm

 Subtank Nano Includes

img_17401 x Subtank Nano
1 x OCC Sub Ω 0.5/Range (15w-30w)
1 x OCC 1.2 Ω Range (12w-25w)
1 x Manual

510 Connection
Pyrex Glass
3ml Capacity Tank
Durable Structure
Enhanced airflow system
Smaller and more compact design
18.5mm width
Height w/o Drip Tip: 47mm
Height with Drip Tip: 60mm
The supplied Organic Cotton is produced in Japan
The Subtank Nano came with the 0.5 Ω OC Coil installed so you will need a device of 25w and above to get the full advantage from this setup.


k-simar20-2I have used a selection of two different E-juices with varying PG/VG mixtures including 90% VG from Vista Vapors, and a new range of juices from the Evo collection using a pre-built 0.5Ω coil setup with organic cotton in the RBA build, and the Sub 0.5 Ω & 1.2 Ω bottom plane dual coil in its clearomizer configuration between 12w & 30w. I have also included the K-Simar 20w device for use between the ranges of 12w & 20w for this evaluation of both tanks.


REACH compliant

If you intend to use this range of E-Liquids, please make sure they meet the current requirements set out by your countries regulatory bodies.

For EU countries, more information on this can be found here along with REACH’s partner agencies from around the globe.

E-Liquids may contain diacetyl (DA) and acetyl propionyl (AP) or other carcinogenic ingredients or disease-causing substances, so please be aware of this and seek medical advice before using any of the products used in my reviews.

People can also suffer from allergies to chemicals that may be present in the makeup of certain types of E-liquids or produced in their vapour. People can become sensitive to, or even allergic to Nickel or Titanium used in Temperature Controlled designed coils.

Again, please be aware of this and seek medical advice before using any of the products used in my reviews. Also, check with your E-liquid supplier or the equipment manufacturers directly before purchase and use.

And never leave your device charging unattended, make sure you are using the recommended battery if one is required for your device, and always remember, SAFETY FIRST.

If you are new to RBA’s, useful help and direction can be found in the many forums that exist, so join and start asking questions, the people there are very friendly, and full of helpful tips & advice. You can find some of these on my website under Forums.

The Subtank Mini’s cleverly designed base unit not only houses both of the dual coils supplied in 0.5 sub Ω & 1.2 Ω setups but also the RBA section as well, by utilizing the same threading for both which can be securely seated in the centre of it.

The RBA section arrived with one installed coil reading at 0.6 Ω, so all you have to do is add the supplied Organic Cotton and, of course, your choice of E-liquid and enjoy the experience of vaping an RBA inside the housing of a traditional clearomizer.

Access to the deck for building on is a simple unscrewing of the chimney wall from the base (again do be careful not to over tighten here as it will be difficult to remove it) leaving you with a small but completely open area to build onto.

Securing your coils to the positive & negative posts is done by loosening the two Phillips screws on the top, wrapping the wire underneath and tightening down the screws again to secure the coils into place, making sure you center the newly built coil over the air hole situated beneath, removing any excess wire that may cause a short as the gap between the posts and outer wall are as I said paper thin!

Insert your Japanese organic cotton and remember to prime your cotton first with E-Liquid before heating it so as not to burn the cotton, and test the build for shorts on a good ohm’s reader to check your build before using it.

You can also find plenty of helpful videos on U-Tube under building an RBA. For the first time users, you should get some expert advice before you try it for yourself. I’m sure most vendors will be only too happy to help you or recommend where you can find some.

Two small juice channels have been cut into the floor of the deck which will become more apparent when the chimney is in place increasing the flow of juice into the main body of the chamber and appear to function well.

There is also a circular adjustment ring around the outside of the base unit allowing you to adjust the air intake by rotating the outer detente ring into the positions that best suit your vaping style. These provide more than sufficient airflow into the main body of the chamber creating massive vapour production if required to do so.

Flush mounting of the Mini posed no visible issues making a solid contact each time. Performance regarding vapour output is significantly improved when using the RBA’s pre-installed coil and the supplied 0.5 sub Ω over that of the 1.2 Ω dual coil as you would have expected.

Also with the Japanese organic cotton being used in both of these there is a marked improvement in the overall flavour as well.

When using both the 0.5 Ω pre-made coil plus the 0.6Ω build with an increase in power of up to 30 watts I began to experience a slight burnt taste after two or three consecutive pulls. So I would suggest vaping these at a somewhat lower temperature to start with and find out what is best for you and how you vape rather than cane it and ruin the cotton.

The Nano is a great performer also and if you prefer smaller don’t think for one moment you are going to lose out with this tank, in fact quite the opposite.

It performs equally as well as the Mini but apparently holds slightly less juice so do bear this in mind and, of course, it does not have an RBA setup and should never be used as such. Also, you can use this on smaller devices where the overhang is a real issue. I have it working on my Innokin VV4, and it looks very cool indeed and works like a dream.


The SubTank Mini is going to be another very hot seller that will appeal to a variety of users. In particular, those of you who may be considering whether to try their own builds for the first time or those who prefer using a Clearomizer with pre-built dual coils just like its big brother, the 25mm Subtank OCC making it an attractive and extremely versatile addition to your collection.

And remember, with the Subtank you have pre-built coils included ready to use in its RBA configuration making the transition just that little bit easier, along with the New 0.5 sub Ω, and a 1.2Ω dual coil, what else do you need to enjoy immense vapour with excellent flavour too!

The Nano being the smallest of the three in this range came to be a real surprise and produced huge clouds for its relatively small size and excellent taste also when used in conjunction with the Japanese Organic Cotton Coil. And as they say, it’s not the size that matters it is the performance you get from it that counts!

Construction and design of both the new 18mm & 22mm Subtank versions are going to make them a far more popular option to use with smaller devices over the 25mm version allowing for a flush fit onto almost all of the current popular devices which should please a lot of people for sure, including me!

And, with the 25mm Subtank offering you increased E-liquid volume, should you require it to last a day for the heavier user then you cannot go too far wrong with these three options, especially when you consider that you can interchange the 0.5 sub Ω & 1.2Ω between all three.

Vapour production and flavour are exactly what I would have expected from these new KangerTech products, plentiful on both counts especially now the newly designed airflow control ring has been added producing, even more vapour than before. The RBA section in the Mini is going to be a success too amongst first time users and experienced vapers alike allowing you to experience the added benefit of a fuller flavoured vape along with creating your own builds to the desired resistance that you require.

I could not find much wrong with either of these. However, I would suggest to Kanger to include the 1.2Ω coils as the pre-installed ones rather than the 0.5 sub Ω to save confusion when inexperienced users try to fire it on a device that does not produce sufficient power to do so. Remember the 0.5Ω recommended power range is between 15w-30w and the 1.2 Ω is between 12w-25w so please check you have the required amount of power from your device to obtain the full benefit from each of these coils.

There is some leaking once the pressure drops inside the tank through the bottom air slots so remember to keep it filled above one-third as this certainly helps to minimise the problem. Aso, check the seal on the base of the inserted coil to make sure it is not damaged of miss aligned.

Also the RBA sections outer chimney wall can be a little difficult to remove if tightened down too much so an improvement here would most defiantly help users. Please bear in mind the close proximity of it in relation to the posts to avoid a short. As I mentioned earlier, it’s not much more than a fag papers width!

The official release date for both the Mini & Nano is Mid-End of January 2015 with a price tag of around (Mini £27.00 US$ 38.00) (Nano £22.00 $35.00)

This is another fine example of Kangertech listening to the market demand from the vaping community, so be sure to check them out when they hit the shops this month, and if you have not created your own build before seek advice from your local vendor prior to purchasing the Subtank Mini 22mm or the Subtank OCC 25mm. I mention this solely because both versions are going to encourage a great many new converts to the RBA way of life!

For further details on the new Subtank OCC, and to enter your unique product security code to identify its authenticity, contact KangerTech directly or your nearest supplier.

All products are sent directly by the manufacturer for review


Shenzhen Kanger Technology Co.,Ltd.
A1 building Haocheng Industrial Park NO.66,
Hexiu Road,
Heping Village,
Fuyong Town Bao’an District,
Shenzhen City.
Skype: Kanger-James
Contact: James Zhu.
Tel: 86-75527240540
Mobile: 86-13923728907
E-mail: manager@szkanger.com
China contact: service@szkanger.com

KangerTech US Service Centre
11555 Medlock Bridge Rd, Unit 100, Johns Creek, GA 30097
Phone: 1-888-799-1988
Quality feedback: service@szkanger.com
US Service contact: service@kangertechus.com

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All rights reserved. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the publisher, except in the case of brief quotations embodied in critical reviews and certain other non-commercial uses permitted by copyright law. For permission requests, write to the publisher addressed “Attention: Permissions Coordinator.


Join the conversation! 5 Comments

  1. I love the Kanger Mini Tank it works great on my 50 watt Mod! Thank you Kanger i just love all of your product! Toni Johnson. 🙂

    • AutumnOctober 25, 2012 I bought this a few days ago after using a frednis.I’m in love. The price was extremely reasonable. It works extremely well, is very portable, and the no coughing is fantastic. Very happy with my purchase.

  2. Hi I just received this yesterday and I went through the manual and did as it says but for some reason it’s really harsh what would the best setting be on the I stick to keep it good

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