Testing of disposable devices from the CIS E-cigarette market. Part 1

Disposable e-cigarettes are now the fastest growing segment in the vaping market. Dozens of new products enter the market per week. Since Vape Testing specialists constantly monitor the market situation, it was previously noted that many manufacturers indicate different information on the number of puffs on the packages, with the same technical characteristics of their products. Sometimes the numbers differ by two or three times.

Therefore, the Vape Testing team decided to test some devices and reveal their real characteristics.

Our approach

We have selected all the most popular and sold brands and models of vape devices in the CIS in our opinion. All devices were tested on the same machine using the same methodology with unchanged parameters. In the future, we plan to conduct similar tests on devices sold in the USA and Europe.

The devices that we selected for testing:

  • ELF BAR CRYSTAL 2500
  • IZI TYT MAX
  • ELF BAR 1500
  • MASKKING HIGH PRO
  • PLONQ 2.0

To be more precise, we took 5 devices and tested them using the Universal Analytical Vaping Complex (UAVC) according to the International Standard ISO 3308:2000(E). ISO 3308 describes the requirements found necessary to be specified in the light of knowledge and experience gained with analytical cigarette-smoking machines.

International Standard parameters:

  • Puff volume – 35 ml.
  • Puff duration – 2 sec.
  • Puff frequency – 60 sec.

We put the results we got in a comparative table for easier understanding. You can see it below.

How does it work?

There are 3 factors that affect the life cycle of a disposable cigarette.

1. The coil and its physical parameters

2. Electronics and its internal settings and physical indicators.

3. Battery, chemistry material and specific capacity of the battery.

The main factors that affect the life cycle of a disposable cigarette are the coil and the battery.

Basically, all coils have the same resistance, which varies in the range of 1.2-1.7 Ohms. This is due to the fact that disposable cigarettes use similar electronics with almost the same characteristics, besides, this is a good ratio with a battery that produces a current strength of about 2 amps when fully charged.

We measured the life cycle of cigarettes using a HAVC smoking machine, using the ISO standard as settings, the parameters were the same for all the studied samples, which shows us good comparative results.

But there is a method by which you can determine the life cycle of a device based only on the technical characteristics of the device.

Let’s examine an example:

We have a 500 mAh battery, 1.5 ohm coil, standard electronics.

To calculate, we need to understand how much power the electronics and the coil consumes in 2 seconds of tightening.

The average battery voltage is 3.7 Volts, according to Ohm’s law, the current consumed by the coil.`

I=3.7/1.5=2.467 Amps / hour

Accordingly, it is consumed for 2 seconds 

One puff 2 second – (2.467 A/3600s)x2=0.00137 A or 1.37 mA.

we find the theoretical number of puffs for a given battery volume

500/1. 37=364.9 Puffs

And we do not take into account the factors that can affect the number of puffs.

Factors that can affect the life cycle of a cigarette: 

  • Internal resistance of the battery (Ohm’s law for a full circuit)
  • Consumption of electronics during operation
  • Battery self-discharge
  • Potrei when heating the heater (heater efficiency)
  • Battery Chemistry
  • The actual battery power is in the operating range.
  • Build errors
  • The correct setting of the pressure drop
  • Temperature coefficient of the heater 
  • The type of electronics used etc.

All this can make an adjustment from 10 to 40% in the real indicator.

This technique is good at the design stage of the device, but for a real test, a machine that simulates the process of use as much as possible is best suited and all processes are carried out as the manufacturer has provided for them. Including errors and improvements.

Let’s move on to our tested devices.

Let’s substitute the data obtained during testing and compare it with the data obtained during testing on the machine. Thus, we can objectively evaluate the real indicators with theoretical ones and with those that the manufacturer claims.

Device Flavour Declared number of puffs ISO The actual number of puffs ISO The weight of the device before test The weight of the device after test The weight of evaporated liquids Dry weight Actual filled in liquid weight Declared amount of liquid (ml) Device status at the end of the test/reason for stopping the test
1 PLONQ 2.0 Energy drink 500 411 15,4143 15,8851 1,5292 15,5153 1,899 2 No steam, low battery indication
2 ELF BAR CRYSTAL 2500 Strawberry kiwi 2500 675 52,9571 51,1153 1,8418 47,1801 5,777 5,5 No steam, low battery indication
3 ELF BAR 1500 Kiwi passion fruit guava 1500 772 37,6277 35,3418 2,2859 32,7032 4,9245 4,8 No steam, low battery indication
4 MASKKING HIGH PRO Ice banana 1000 657 35,5044 34,0432 1,4612 31,8974 3,607 3,5 No steam, low battery indication
5 IZI MAX Root beer 1600 637 39,7468 36,9057 2,8411 33,8872 5,8596 6 No steam, low battery indication

And here’s more information on additional analysis of devices.

Device Flavour Declared battery capacity (mAh) Actual battery capacity (mAh) Battery type Battery capacity in the working range (mAh) Coil resistance (Ohm) Estimated power per puff (mAh2s) Theoretical number of puffs Declared puff number Actual puff number Difference between the theoretical and actual data The difference between the declared and actual data Percentage difference between the declared and real data
PLONQ 2.0 Energy drink 370 385 LCO 370 1.97 1.04 355 500 411 -56 89 82.2
Real graphs after PLONQ 2.0 battery testing
Device Flavour Declared battery capacity (mAh) Actual battery capacity (mAh) Battery type Battery capacity in the working range (mAh) Coil resistance (Ohm) Estimated power per puff (mAh2s) Theoretical number of puffs Declared puff number Actual puff number Difference between the theoretical and actual data The difference between the declared and actual data Percentage difference between the declared and real data
ELF BAR CRYSTAL 2500 Strawberry kiwi 1000 900 LMAO 840 1.51 1.36 735 2500 675 60 1825 27.0
Real graphs after ELF BAR CRYSTAL 2500 battery testing
Device Flavour Declared battery capacity (mAh) Actual battery capacity (mAh) Battery type Battery capacity in the working range (mAh) Coil resistance (Ohm) Estimated power per puff (mAh2s) Theoretical number of puffs Declared puff number Actual puff number Difference between the theoretical and actual data The difference between the declared and actual data Percentage difference between the declared and real data
ELF BAR 1500 Kiwi passion fruit guava 850 810 LCO 780 1.88 1.09 777 1500 772 5 728 51.5
Real graphs after ELF BAR 1500 battery testing
Device Flavour Declared battery capacity (mAh) Actual battery capacity (mAh) Battery type Battery capacity in the working range (mAh) Coil resistance (Ohm) Estimated power per puff (mAh2s) Theoretical number of puffs Declared puff number Actual puff number Difference between the theoretical and actual data The difference between the declared and actual data Percentage difference between the declared and real data
MASKKING HIGH PRO Ice banana 650 670 LMAO 650 1.92 1.07 607 1000 657 -50 343 65.7
Real graphs after MASKKING HIGH PRO battery testing
Device Flavour Declared battery capacity (mAh) Actual battery capacity (mAh) Battery type Battery capacity in the working range (mAh) Coil resistance (Ohm) Estimated power per puff (mAh2s) Theoretical number of puffs Declared puff number Actual puff number Difference between the theoretical and actual data The difference between the declared and actual data Percentage difference between the declared and real data
IZI MAX Root beer 950 840 LCO 820 1.63 1.26 753 1600 637 116 963 39.8
Real graphs after IZI MAX battery testing

Output

The main motivation behind this research was the curiosity of the Vape Testing laboratory. Our team was very interested in how the indicators on the packaging correspond to reality. We in no way want to offend any of the manufacturers. In fact, we have tested even more devices sold in different countries. They will be discussed in the following articles. Meanwhile, you can watch a video about CIS disposable devices testing below or on our YouTube channel.

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