Electronic cigarette models are categorized into many different groups based on their body structure, battery system, pod or atomizer technology, coil resistance, wattage range, and usage style (MTL, RDL, or DTL). Today, the electronic cigarette category consists of more than just classic large mod devices; compact pod systems, Pod Mod devices, vape pens, box mod kits, and various atomizer systems are also parts of this vast product family.
Modern electronic cigarette models can feature a wide variety of technical specifications such as built-in batteries, 18650 or 21700 external batteries, USB Type-C charging, refillable pods, mesh coils, adjustable airflow, auto-draw, Smart Mode, TFT screens, and power systems capable of reaching 200W.
Therefore, when choosing an electronic cigarette, rather than just looking at the device's appearance or maximum wattage, one should evaluate usage style, coil/cartridge compatibility, battery capacity, power requirements, e-liquid composition, and spare parts options together.
Electronic cigarettes do not consist of a single device design.
Current models can generally be evaluated under the following product groups:
A pod electronic cigarette is a type of compact e-cigarette that uses a pod or cartridge system instead of a classic tank.
The coil may be integrated into the pod cartridge or replaceable separately.
In modern pod models, one may encounter features such as:
For example, the current Vaporesso XROS series is a vast pod platform with various cartridge options such as 0.4Ω, 0.6Ω, 0.8Ω, 1.0Ω, and 1.2Ω.
Pod Mod is one of the advanced pod-based e-cigarette classes positioned between compact pod systems and classic box mods.
Pod Mod devices may feature higher battery capacity, wider wattage ranges, screens, manual power adjustment, and replaceable coils compared to classic small pods.
Some Pod Mod devices can support multiple usage styles, including MTL, RDL, and DTL.
Current models range from advanced pods around 30W to high-power Pod Mods at the 80W level.
Vape pens refer to slim and long-bodied Vape Pen or Pen Style devices.
The term "pen" primarily describes the device's physical design and does not determine the coil, wattage, or usage style on its own.
Today, there are different versions of pen-style devices, such as:
The GeekVape WENAX M2 is a current example of this, featuring a 1200mAh battery, a maximum power of 16W, and 0.8Ω / 1.2Ω MTL pod support.
Electronic cigarette mod or box mod is the e-cigarette body that houses the battery, chipset, screen, and power control systems.
Box mods are mostly used with 510-connected tanks and atomizers.
Current box mods can use various power sources, such as:
The power class can range from single-battery devices around 100W to dual-battery models of 200W and above.
Electronic cigarette set or Vape Kit is a product group where the essential parts of the e-cigarette are offered in the same package by the manufacturer.
Depending on the model, a kit may contain:
The term "Kit" or "Set" does not necessarily mean that external batteries or e-liquid are included in the package. Package contents should be checked on a product-by-product basis.
In disposable electronic cigarettes, the e-liquid and coil system are pre-installed in the device.
The e-liquid reservoir of these devices is not designed to be refilled by the user.
New-generation disposable models may feature USB Type-C rechargeable batteries, mesh coils, screens, and airflow control.
Being rechargeable does not mean the product is "refillable," i.e., refillable with e-liquid.
These classifications may vary from manufacturer to manufacturer. The actual technical specifications of the device are more important than the product name.
MTL stands for Mouth-To-Lung, a draw style from the mouth to the lungs.
MTL electronic cigarette models generally feature tighter airflow and lower power usage.
While cartridge/coil options such as 0.8Ω, 1.0Ω, and 1.2Ω are common in this class, there is no absolute ohm standard for all devices.
For example, the GeekVape WENAX M2 supports 0.8Ω and 1.2Ω pods with a maximum power of 16W.
You can check the MTL Atomizer category to explore MTL atomizers.
RDL stands for Restricted Direct Lung, a restricted direct-to-lung draw.
RDL systems may have more open airflow than MTL but more restricted airflow than full DTL devices.
Coil/cartridge options such as 0.4Ω, 0.6Ω, or 0.7Ω are frequently seen in RDL products, but usage character is not solely dependent on the ohm value.
Airflow, wattage, and coil design should be evaluated together.
DTL stands for Direct-To-Lung, a direct-to-lung inhalation system.
DTL electronic cigarette models typically feature more open airflow, low-resistance coils, and high wattage usage.
For example, the current VOOPOO PnP X coil platform offers a wide usage range, such as:
There are no absolute MTL/RDL/DTL boundaries applicable to all brands for ohm or wattage values.
A coil is the e-cigarette part that heats the cotton or wick system containing the e-liquid.
Mesh technology is very common in modern coil structures.
In electronic cigarette models, the coil can be:
You can check the Coil Atomizer category to explore spare coil options.
In integrated coil systems, the coil is fixed inside the cartridge.
When the coil reaches the end of its service life, not only the coil but the entire pod/cartridge is replaced.
This system is especially common in compact pod electronic cigarette models.
To switch to a different ohm option, you may need to install a cartridge with a new resistance.
In models using replaceable coils, the tank or pod continues to be used, and only the coil is renewed.
This structure can be seen in:
For example, the VOOPOO Drag 5 works with the UFORCE-X Tank and PnP X coil family.
A mesh coil is a coil technology that uses a mesh or wide-surface metal heating structure instead of a classic round wire.
Mesh coils are widely used in current pod, Pod Mod, and sub-ohm tank systems.
However, not all mesh coils have the same wattage, resistance, or liquid usage.
The product's coil model and the operating range specified by the manufacturer should be taken as a basis.
Ohm (Ω) refers to the electrical resistance of the coil.
While low ohm values are generally associated with higher power classes, high-resistance coils typically use lower wattage.
However, there is no rule stating "the lower the ohm, the better the device."
There is no single ideal wattage value for an electronic cigarette.
The wattage value to be used is determined by the operating range specified by the manufacturer for the installed coil, rather than the device's maximum wattage capacity.
Current electronic cigarette models include:
Maximum Wattage ≠ Wattage to be used. A 200W-capable mod can be used around 50–60W with a coil requiring 50–60W.
Low-power devices in the 10–20W class are especially seen in compact MTL pod and pen models.
The GeekVape WENAX M2 is an example of this.
The device offers a 1200mAh built-in battery, maximum 16W power, 2ml pod, and 0.8Ω / 1.2Ω cartridge support.
The 30W class is quite common in current pod devices.
For example, the VOOPOO ARGUS Matrix features:
Pod Mod and sub-ohm devices can be found in the 80W class.
Electronic cigarettes in this class may offer low-resistance coils and more open RDL/DTL usage options.
However, a device with 80W maximum output is not used at 80W with every coil.
The 100W class is common in single-battery box mods and some powerful electronic cigarette systems.
18650 or 21700 external batteries can be used in these devices.
While 100W maximum power can offer a wide adjustment range for many different atomizers and coils, the actual usage wattage is determined by the coil.
Dual external battery usage is common in 200W electronic cigarette models.
The current GeekVape Aegis Legend 5 offers:
External 18650 batteries are not included in the package.
In electronic cigarette models, the battery system varies according to the product class.
A significant portion of pod, Pod Mod, and pen electronic cigarette models contain a built-in battery.
In devices with built-in batteries, the battery is not removed during daily use and is mostly charged via USB Type-C.
Current devices offer different options ranging from around 1000mAh to 3000mAh and above.
18650 is one of the lithium-ion battery formats commonly used in electronic cigarette mods.
In addition to devices using a single 18650, there are also high-power models that use two 18650s.
For example, the VOOPOO Drag 5 uses two 18650 batteries and offers 5–177W output.
Batteries are not included in the package.
The 21700 battery format is physically larger than the 18650.
Some electronic cigarette models support only 21700, while others may support 21700 and 18650 batteries with an adapter.
It should not be assumed that every 21700 device supports 18650.
Can offer a more compact body and lower total weight. There are models capable of reaching the 100W level.
Common in box mods requiring high maximum power. Outputs of 177W, 200W, or higher can be seen.
Using two batteries does not mean the actual usage time will be exactly doubled in all cases.
In electronic cigarettes with external batteries, the physical condition of the battery and correct usage are important.
USB Type-C has become very common in current electronic cigarette models.
A Type-C port can be seen on pod, Pod Mod, pen, and box mod devices.
However, the charging speed of two devices with a Type-C connection does not have to be the same.
For example, the GeekVape WENAX M2 has 5V/2A, while the VOOPOO Drag 5 has 5V/3A Type-C charging features.
A chipset is the power and electronic control system of a regulated electronic cigarette.
Depending on the model, a chipset can:
Not every device has the same chipset or the same operating modes.
Smart Mode is an electronic operating system designed to help the device select appropriate power by detecting the resistance of the installed coil or cartridge.
While some devices automatically determine the recommended wattage value, others may limit the power range that the user can choose.
Even if Smart Mode is present, the manufacturer's wattage values on the coil should be checked.
TC or Temperature Control is an advanced mod feature that allows temperature-controlled usage with compatible coil/wire structures.
This feature is mostly seen in regulated box mod devices.
For example, the GeekVape Aegis Legend 5 and VOOPOO Drag 5 have temperature control options among their advanced operating modes.
Electronic cigarette screens can vary according to the product class.
While simple pods feature LED light indicators, advanced devices can use OLED or TFT screens.
Depending on the model, the screen can display:
In an Auto Draw or automatic draw system, the air sensor automatically fires the device when the user inhales from the mouthpiece.
This system is especially common in pod and pen electronic cigarette models.
While some models use only automatic draw, some devices may feature both automatic draw and a firing button together.
The airflow system controls the amount of air reaching the coil during inhalation.
Narrowing the air channel can allow for a tighter MTL draw, while opening it can allow for an RDL or DTL character.
Airflow adjustment can be found in many different electronic cigarette models, such as pods, Pod Mods, sub-ohm tanks, and RTAs.
Top Fill is a filling system where the e-liquid filling point of the pod or tank is located at the top.
Top-filling design is quite common in new-generation pod cartridges.
Apart from this, there are also side-filling systems or filling systems accessed by removing the cartridge.
E-liquid capacity may change depending on the model and the market where it is sold.
While 2ml or 3ml capacities are seen in compact pods, capacities of 5ml and above can be common in large sub-ohm tanks.
Different tank/pod volumes can be found in the global and TPD versions of the same electronic cigarette model.
Seeing two different ml values for the same device on the internet does not always mean incorrect information. Standard and TPD packages can have different capacities.
The TPD version may refer to the product variant prepared for specific European markets.
Pod or tank capacity in TPD packages may be lower than the standard/global product.
For example, while the VOOPOO Drag 5 standard package has a 5.5ml tank, the TPD package uses a 2ml tank.
One of the most important parts that determine the usage structure of electronic cigarette models is the atomizer system.
Current atomizer types include:
You can examine the Atomizer category for detailed options.
In ready-to-use coil systems, the coil is prepared by the manufacturer and replaced with a new one when its service life is completed.
A significant portion of Pod Mod and tank systems use ready-to-use coils.
When choosing a coil, the coil family should be checked along with the tank or device name.
RTA stands for Rebuildable Tank Atomizer, a tank system where the user can prepare the coil and cotton themselves.
RTA atomizers are mostly used with 510-connected regulated mods.
Since the coil resistance and wattage value are created by the user, it requires more technical knowledge than ready-to-use pod systems.
510 connection is the common threaded connection standard used between a classic mod and an atomizer.
510 connection is quite common in box mods.
Pod electronic cigarettes, on the other hand, mostly have series-specific magnetic cartridge connections.
510 connection does not mean full compatibility on its own. The atomizer's coil resistance, required wattage, and physical diameter must also be compatible with the mod.
Spare cartridge compatibility is one of the important selection criteria when purchasing a pod electronic cigarette.
While some manufacturers use the same cartridge platform in many models, some devices have their own specific pods.
For example, the VOOPOO ARGUS Matrix is compatible with the current ARGUS Pod Family cartridge platform.
Being within the same brand does not mean all cartridges fit all models.
In tank or Pod Mod systems, to avoid purchasing the wrong coil, one should not look only at the device brand name.
For example:
There are different coil ecosystems, such as those listed above.
Electronic cigarette e-liquid should not be chosen solely based on the device's brand or body shape.
Correct selection involves evaluating:
You can examine the Electronic Cigarette Liquid category for different product options.
Salt liquid is one of the formulations frequently used with low-power MTL pods and MTL atomizers.
However, the fact that an electronic cigarette model is a "pod" does not automatically mean it is suitable for all Salt nicotine levels.
Especially high-nicotine Salt liquids should not be evaluated in the same usage class as high-wattage and high-liquid-consuming DTL systems.
For detailed information, you can examine the Salt Liquid category.
Freebase liquids can be used in electronic cigarette models that have appropriate nicotine concentration, coil resistance, and wattage values.
While low-nicotine Freebase products are commonly seen in RDL and DTL systems, there are also different MTL Freebase options.
The generalization that pod devices only work with Salt liquid is incorrect.
50VG/50PG e-liquids are one of the balanced viscosity ratios commonly used in low-power MTL and pod systems.
However, it cannot be said that all electronic cigarette models only work with 50/50 liquid.
Higher VG ratios are also commonly encountered in high-power DTL systems.
High VG liquids have a more viscous structure.
Sub-ohm DTL coil systems with larger liquid inlet channels and high liquid feeding capacity are used more frequently with these types of liquids.
In small MTL cartridges, very thick liquid feeding may remain insufficient.
