WARNING: This product contains nicotine.
Nicotine is an addictive chemical.

WARNING: This product contains nicotine. Nicotine is an addictive chemical.

EHPRO Armor Kit | Review

A retro tube mod by EHPRO that can use larger batteries

6 min read

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EHPRO Armor Kit

EHPRO has decided to merge the latest trend of 20700 and 21700 battery devices, with the simplicity of a mechanical tube mod.

However, to make sure users are protected with battery safety, it’s not a true mech mod. Instead, it comes with a simple one-button PCB board to protect against incorrect usage.

It comes with the Armor tank, a 3ml capacity sub-ohm tank all decked out in a retro style.

The Good

Simple, clean looking. Can accommodate 20700 & 21700 batteries. The Armor tank works well.

The Bad

A little long and heavy for a vape pen (due to taking the larger batteries).

The Bottom Line

It’s a very niche market that the Armor Kit is going to appeal to. It’s for the vaper that likes to keep it simple but still wants to utilize the larger capacity batteries. Not for me, but still it’s a decent reliable kit.


Disclosure: This product was sent to us by EHPRO for the purpose of this review.

EHPRO Armor Kit
1Design & Build Quality

There’s something so refreshingly retro about the EHPRO Armor kit.

At first sight, it took me back to the good old days of mechanical vape pens, which I didn’t realize I missed using. It just gives you a satisfying feeling holding a simple tube with one fire button.

However the Armor kit is a little larger than most vape pens, that’s due to the fact it can accommodate either 21700, 20700 or 18650 batteries. They include a solid plastic battery adapter for the smaller 18650 size. It also means with the larger batteries; this mod is going to feel a little heavy for a vape pen.

The given measurements for the Armor tube mod are 91.25mm tall with a 24.7mm diameter. But I think that may be a little off because I’ve tried a couple of 25mm atomizers on top and they look seamless, with no overhang.

EHPRO Armor Kit

On the design front, there’s not much to talk about. I mean it’s just a stainless steel tube. However, there is a lightly lasered EHPRO and Armor logo toward the bottom of the device. It’s a little shiny, but definitely not a fingerprint magnet.

On the tube itself, the only other bit of styling or accents come from the fire button. The button is nicely raised and contains circular engravings to make it easier to feel with your thinger or thumb. Either side of the fire button is two very small LED’s that help to indicate the status of the device – more on this later.

The Armor Kit is activated with your standard 5 clicks on/off. And the button is just as you’d want on a vape pen, nice and clicky.

EHPRO Armor Kit

The Armor Tank

Most of the styling with this kit comes from the tank, and again it’s quite a retro affair.

The 3 ml capacity glass chamber of the tank is housed in a stainless steel casing, which has large windows either side so you can see your juice level. This helps to give it that full metal look and the tank fits with the tube seamlessly.

The tank features a removable top cap for refilling. The top cap has a safety lock and needs to be pressed down to enable you to unscrew and remove. This means the cap actually sits off of the top of the liquid chamber a little and has a slight gap. However, this doesn’t bother me, and I think just gives it a little more individuality.

EHPRO Armor Kit

The main accents of the tank come from 9 little dimples going around the top cap, and two slightly raised blocks on the airflow ring with EHPRO lasered on them. I think the two blocks are supposed to make it easier to turn the airflow control ring of the tank.

Although that was one of the main issues I had with the kit. The airflow ring is incredibly stiff and almost impossible to turn. Over a weeks usage, it did loosen up slightly but was still too tight for my liking.

Another slightly subjective negative I had with the tank is the mouthpiece. It’s a large tapered 510 drip tip, which does look good on the tank but isn’t my preferred type of drip tip for vaping. It’s comfortable to use but isn’t the style that I’ve now become accustomed to. However, you can switch it out and replace with your own.

EHPRO Armor Kit

Armor Kit Features

The Armor kit is capable of firing coils with a resistance range of 0.2-1.2Ohms and has an output wattage of 3.5-4V.

It also features short-circuit, overheat, reverse battery and 10-second cut-off protection. All of which can be identified by the following combinations of the two LED lights:

  • Red light flickers 5 times – Battery Voltage is lower than 3.2V or output voltage is lower than 2.7V
  • Red light flickers 10 times – Output overcurrent, low load or short circuit.
  • Yellow light flickers 10 times – The temperature of the PCB reaches 85C.
  • Green light flickers 5 times – Output time is over 10 seconds and will stop firing.

The LED lights are also used when firing the device to indicate your current battery life:

  • Red light – lower than 30%
  • Yellow light – between 30% and 70%
  • Green light – over 70%

All in all, it’s simple and well implemented, and the LED lights are small but bright and easy to see.

EHPRO Armor Kit
2Specs & Features

EHPRO Armor Kit Specs:

  • Size: 128.5* 24.7mm (with tank)
  • Material: Stainless Steel
  • Atomizer Capacity: 3ml
  • Filling Way: Top Fill
  • Atomizer Coil Resistance: 0.3ohm
  • Mod Resistance Range: 0.2 – 1.2ohm
  • Mod Output Voltage Range: 3.5V – 4.0V
  • Battery Used: Single 18650/20700/21700 (No battery is included)

EHPRO Armor Kit Features:

  • Short-circuit protection
  • Overheat protection
  • Reverse battery protection
  • 10S cut-off protection

EHPRO Armor Kit Contents:

  • 1* Mod 101
  • 1* Battery Adaptor
  • 1* Mod 101 User Manual
  • 1* Armor Atomizer
  • 1* Glass Tank
  • 1* Armor Atomizer User Manual
  • 1* Silicon O-rings
  • 1* 0.3ohm Coil Head
EHPRO Armor Kit
3Features & Performance

The mod itself works perfectly and fires almost instantly with any battery that I’ve used inside. The threading on the battery cap is also buttery smooth, so there are no issues when replacing batteries.

The Armor tank, however, did cause me some issues.

The tank uses EHPRO’s EL1B coils, and it came pre-installed with a 0.3-ohm coil. As soon as I connected the Tank (with included coil) to the device and fired it up, I was greeted with 10 flashing red lights.

That’s strange…..so I removed the tank and coil, and tried again. Same response.

EHPRO Armor Kit

Fortunately, EHPRO had supplied us with a spare 0.3-ohm coil, so I switched it out, and all was good. But I wasn’t particularly impressed with having a dud coil in the kit, but I guess these things happen.

The performance with the fresh coil was quite surprising. The flavor was good, and the tank can produce quite a cloudy vape with the airflow wide open. The mouthpiece being the narrower 510 probably helps to create a more saturated vape.

The tank is super easy to refill, and I’ve been vaping on the same coil for a week with not too much of a dip in flavor.

It’s a simple, easy to use regulated mech mod that just works.

EHPRO Armor Kit


  • Retro simplistic looks
  • Can accommodate 20700 & 21700 batteries
  • Smooth threading
  • Simple functions
  • LED indicators clear to see
  • Decent firing button


  • A little large for a vape pen
  • Stiff airflow ring on the tank
  • Drip tip (subjective)

I think EHPRO have done a decent job with the Armor Kit. The build quality is very good; it’s a simple device that they’ve managed to keep simple with the design.

I enjoyed my time using it, and forget how nice it is to hold and use a tube mod on a daily basis. It was also nice to get away from all the complexities of modes, settings, and screens.

That being said, after my time was up testing the Armor kit for review I haven’t used it since. I guess it came down to the fact it’s a little too large to use as a pocket-friendly vape pen, and maybe I’m just a sucker for all the bells and whistles.

The fact that it can accommodate the larger 21700 and 20700 batteries will undoubtedly appeal to some, and it is a decent performing kit. It’s just a very niche type of vaper that wants a retro style mech mod with battery safety protection. However, if that is you, then this is an excellent option.


Build Quality
Ease of use


It's a very niche market that the Armor Kit is going to appeal to. It's for the vaper that likes to keep it simple but still wants to utilize the larger capacity batteries. Not for me, but still it's a decent reliable kit.
Marc Panayiotis
Marc Panayiotis
Marc Panayiotis, co-founder of our vaping website, combines over 10 years of expertise and a deep understanding of 1000+ products to establish our platform as a reliable industry resource and inspire our team.
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It's a very niche market that the Armor Kit is going to appeal to. It's for the vaper that likes to keep it simple but still wants to utilize the larger capacity batteries. Not for me, but still it's a decent reliable kit.EHPRO Armor Kit | Review