A vape may look like a simple handheld device from the outside, but several small components have to work together every time it is activated. Most devices use the same basic system: a battery supplies power, a heating element warms liquid, a wick moves that liquid toward the coil, and an airflow pathway carries the resulting aerosol toward the mouthpiece.

The exact design can vary considerably. Some devices use replaceable pods, others use cartridges or tanks, while sealed devices combine most components inside a single body. Understanding these basic parts makes vape terminology much easier to follow and helps explain why seemingly similar devices may be built differently.

What Are the Main Parts of a Vape?

Although designs differ between manufacturers and device categories, the most common components include the following:

Component	Main Purpose
Battery	Provides electrical power to the device
Coil or atomiser	Acts as the heating element
Wick	Moves e-liquid toward the heating element
Pod, cartridge or tank	Stores the liquid
Sensor or control board	Controls device activation and power delivery
Airflow pathway	Allows air to travel through the device
Mouthpiece	Forms the final outlet at the top of the device

Not every device uses these parts in exactly the same form. For example, the coil and liquid reservoir may be permanently integrated into a sealed pod, while another device may use separate replaceable components.

How Does a Vape Work?

The operating principle is relatively straightforward when the individual parts are viewed as one system.

1. The battery supplies electrical energy.
2. A button, airflow sensor or control circuit activates the device.
3. Power reaches the coil or atomiser.
4. The coil heats while the wick supplies liquid to its surface.
5. Air moving through the device carries the resulting aerosol toward the mouthpiece.

These steps happen quickly, which is why the internal process may not be obvious when looking at the device from the outside.

The Battery: Where the Process Starts

The battery is the power source behind the entire system. Without it, the heating element cannot operate.

Many modern devices use compact lithium-based rechargeable batteries because they can store relatively high amounts of energy in a small space. Some devices have an integrated battery that remains inside the body, while others may be designed around a removable battery system.

The battery itself does not directly produce aerosol. Its role is to deliver electricity to the control circuit and heating element when the device is activated.

Because batteries are energy-storage components, damaged, swollen, leaking or unusually hot devices should not be dismantled or casually repaired. Sealed devices in particular are not designed to be opened by users.

The Coil or Atomiser: The Heating Element

The coil is one of the most important parts inside a vapes. It is the component that converts electrical energy from the battery into heat.

The term atomiser is also frequently used. Depending on the device and manufacturer, “atomiser” may refer specifically to the heating assembly or more broadly to the combination of the coil and surrounding components.

When electricity passes through the heating element, its temperature increases. Liquid delivered by the wick reaches this heated area, where it forms an aerosol.

What Is a Mesh Coil?

Traditional coils often use a wire-shaped heating element. Mesh designs instead use a thin sheet or grid of conductive material.

The underlying principle is still the same: electrical resistance produces heat. What changes is the shape and surface area of the heating material.

This is one example of why two devices can perform the same basic function while using noticeably different internal construction.

The Wick: A Small Part With an Important Job

The wick is easy to overlook because it is normally hidden around or beside the heating element.

Its purpose is to move liquid from the reservoir toward the coil. Cotton-based materials are commonly associated with this role, although designs vary.

The process relies on capillary action. Liquid moves through the wick material until it reaches the heating area.

This means the coil and wick perform different jobs:

• The wick transports liquid.
• The coil supplies heat.

Together, they form the core of the atomising system.

Pod, Cartridge or Tank: What’s the Difference?

These three terms are often used when describing the part of a device that holds liquid, but they are not always interchangeable.

Pod

A pod is usually a compact reservoir designed to fit directly into a compatible device. Depending on its construction, the pod may contain only liquid or may also contain an integrated coil.

Cartridge

A cartridge performs a similar storage function. The term is commonly used for self-contained liquid units that connect to a battery or device body.

Tank

A tank is generally a larger reservoir assembly. Tanks have historically been associated with modular systems where the reservoir and heating components can be separate parts of the device.

Manufacturers do not always use these terms consistently, however. A component described as a cartridge by one company might resemble what another manufacturer calls a pod.

For this reason, looking at the actual component design is usually more useful than relying on the name alone.

What Is E-Liquid?

E-liquid is the fluid held inside the pod, tank or cartridge before activation.

Two terms commonly encountered when reading about this component are PG and VG.

PG

PG stands for propylene glycol. It is a liquid used in many consumer and industrial applications and may form part of an e-liquid base.

VG

VG stands for vegetable glycerine, another commonly used base ingredient.

Products may contain these ingredients in different proportions alongside other substances. The exact formulation depends on the product.

It is also worth distinguishing between a device and the liquid it contains. The word vape is often casually used to describe the entire product, but technically the device hardware and the liquid are separate elements of the system.

Airflow Sensors, Buttons and Control Boards

Power delivery must be controlled rather than continuously sent from the battery to the coil.

Different devices achieve this in different ways.

Some have a physical activation button. Others contain a pressure or airflow sensor that detects movement of air through the device.

A small electronic control board may sit between the battery and heating element. Depending on the design, the electronics can manage functions such as activation, charging and basic electrical protection.

This control layer explains why a modern device is more than simply a battery attached directly to a heating wire.

The Mouthpiece and Airflow Path

The mouthpiece is the visible opening at the upper end of many devices, but the airflow pathway begins deeper inside.

Air normally enters through one or more openings in the body. It then moves past or around the atomising section before travelling toward the mouthpiece.

Even small changes in the size and placement of these channels can alter how air moves through the system.

This is also why blocking an airflow opening can affect device operation, especially on designs that use airflow-triggered activation.

How All the Parts Work Together

It can be easier to understand the device by following the flow of energy, liquid and air.

Electrical flow:

Battery → control system → heating coil

Liquid flow:

Reservoir → wick → coil

Airflow:

Air inlet → heating area → internal airway → mouthpiece

All three processes have to work together. The battery provides energy, the liquid-delivery system keeps the heating element supplied, and airflow carries aerosol away from the heating area.

Are All Vapes Built the Same Way?

No. The fundamental operating idea may be similar, but the physical arrangement of the parts can be very different.

A compact pod-style device may combine the reservoir, wick and coil into a single removable unit. A cartridge-based system might use a separate battery body and preassembled cartridge. Larger modular systems may separate the tank, coil and battery section even further.

Sealed devices take integration another step by enclosing most or all major components inside a body that is not intended to be taken apart.

This variation is one reason terminology can become confusing when comparing diagrams or reading technical descriptions.

Why Vape Terminology Can Be Confusing

Several words are commonly used to describe similar parts or concepts.

• Coil / atomiser: Both can refer to parts of the heating system.
• Pod / cartridge: Both may describe a removable liquid-containing unit.
• Tank / reservoir: Both refer to liquid-storage components.
• E-liquid / vape liquid: Common terms for the liquid used in the device.
• Vapour / aerosol: Everyday descriptions often say “vapour,” while aerosol is the more technically accurate term for the mixture produced by the device.

What Does “510” Mean?

The number 510 is commonly encountered when reading about certain batteries, cartridges and connections.

Rather than describing the liquid or heating technology, the term generally refers to a widely used threaded connection format found on some modular devices.

It is therefore better understood as a hardware connection standard than as a separate type of vaping process.

Understanding the Device Without Taking It Apart

You do not need to dismantle a device to understand how its components work.

In fact, opening sealed electronic devices can expose batteries, wiring and liquid-containing parts that were not designed for user access.

A labelled diagram or manufacturer documentation is generally a better way to study the internal arrangement.

This is particularly important with lithium-battery devices. A damaged battery can present a safety risk, so a device that appears swollen, cracked, leaking, excessively hot or otherwise physically damaged should not be opened simply to investigate the problem.

A Note on Vaping Rules in Australia

Rules surrounding vaping products vary between countries and can change over time. In Australia, vaping products are subject to specific regulatory requirements, so readers should rely on current information from relevant government authorities.

Anyone researching a vape or related hardware should therefore check current Australian requirements rather than relying on older articles or information written for another country.

This article is intended only to explain common device terminology and basic hardware architecture.

Frequently Asked Questions

What are the main parts of a vape?

The most common components are a battery, coil or atomiser, wick, liquid reservoir, airflow pathway, control system and mouthpiece. Some designs combine several of these parts into a single pod or cartridge.

What does the coil in a vape do?

The coil acts as the heating element. Electrical energy supplied by the battery produces heat in the coil, while the wick delivers liquid to the heating area.

Is a vape pod the same as a cartridge?

They can perform similar functions, but the terminology varies between manufacturers. Both may hold liquid and connect to a battery-powered device, while some pods also contain an integrated heating coil.

What is the difference between a coil and an atomiser?

A coil is specifically the heating element. The word atomiser may refer to the coil itself or to the broader heating assembly that includes the coil, wick and related components.

What does the battery do?

The battery provides the electrical energy needed by the heating system and electronics. It does not store e-liquid or directly create aerosol.

Why does a vape need a wick?

The wick transports liquid from the reservoir toward the heating element. Without an effective liquid-delivery path, the coil would not receive the material it is intended to heat.

Do all devices contain exactly the same components?

No. Most use the same basic principles, but manufacturers can combine, reshape or integrate individual components in different ways.

What does 510 mean on a vape?

510 commonly refers to a threaded hardware connection format used by certain batteries and cartridges. It describes how compatible components physically connect rather than how the heating process works.

Final Thoughts

A modern vape is essentially a compact electrical and liquid-delivery system. The battery provides power, the coil converts that power into heat, the wick supplies liquid, and the pod, cartridge or tank acts as the reservoir. Airflow then carries the resulting aerosol through the device toward the mouthpiece.

Once those basic roles are clear, terms such as atomiser, pod, cartridge, wick and 510 connection become much easier to understand. Different devices may package the components in different ways, but the underlying relationship between power, heat, liquid and airflow remains the key to understanding how the hardware is constructed.