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Pod Vape Kits Explained: What They Are and How They Work

A plain guide to pod vape kits: what's in the box, how the battery, pod and coil work together, and the difference between open and closed systems.

A pod vape kit is a small, rechargeable vape made of two main parts: a battery and a pod. The pod holds the e-liquid and a coil that heats it into vapour. When the pod runs dry you either refill it or swap in a new one, and the battery keeps going. That reusable design is why pod kits are now the standard way to vape in the UK, since single-use disposables were banned from sale on 1 June 2025.

The parts, one by one

A typical pod kit box holds a handful of parts, and each one has a simple job.

The battery (or "device")

This is the body you hold. It contains a rechargeable lithium-ion battery, a small circuit board and the sensor or button that fires the coil. Most charge over USB-C. Many have an LED, and some have a small screen showing battery level, wattage or puff count.

The pod

The pod sits on top of the battery and holds the e-liquid. It's usually clear or tinted so you can see how much is left. In the UK a nicotine pod can hold no more than 2ml, a limit set by the Tobacco and Related Products Regulations 2016.

The coil

Inside the pod is a metal coil wrapped in wicking material, usually cotton. The wick soaks up e-liquid and the coil heats it when you take a puff. Coils wear out over time, which is why they get replaced. Some pods have the coil built in, so you replace the whole pod. Others let you pull out the coil and fit a new one.

The mouthpiece

On most pod kits the mouthpiece is part of the pod itself. A few kits have a separate drip tip.

Airflow

Many kits have an airflow slider or dial that makes the draw tighter or looser. Tighter feels more like a cigarette. Looser gives more vapour.

How a pod kit actually works

Close-up of hands clicking a pod into a pod vape battery

When you inhale on an auto-draw kit, a sensor detects the airflow and sends power from the battery to the coil. On a button kit, you press to fire instead. The coil heats up, the e-liquid in the wick turns into vapour, and that vapour travels up through the mouthpiece.

Fresh e-liquid then flows back into the wick from the pod, ready for the next puff. That's why the wick needs to stay wet. If it dries out, the cotton itself starts to burn, and you get the harsh taste we cover in our burnt taste guide.

The whole cycle takes a second or two. There's no setup between puffs and nothing to adjust once you've found settings you like.

Open vs closed pod systems

This is the main split you'll see when shopping.

Open system Closed system
Pod Empty, you fill it Sealed and prefilled
E-liquid Any compatible 10ml bottle Only the maker's own pods
Coil Built into pod, or replaceable Built into each pod
Flavour choice Very wide Whatever the brand makes
Upkeep Fill, prime, change coils Swap pods
Common name Refillable pod kit Prefilled pod kit

Open systems are what most people mean by "refillable pod vape". You buy bottles of e-liquid, often nic salts, and fill the pod through a small port. Our guide to refillable pod vapes has the full picture, and if you've never done it, follow our step-by-step on how to refill a pod vape.

Closed systems, also called prefilled pod kits, work a lot like a disposable that you keep. The battery stays, the pods are swapped. The prefilled pod vape guide covers which kind of person they suit.

Neither is better across the board. Closed is easier. Open is cheaper to run and gives you more choice.

Why pod kits replaced disposables

A disposable vape was a sealed unit with a battery you couldn't recharge, or a tank you couldn't refill. Under the UK's single-use vape rules, those can no longer be sold. A legal reusable vape needs a rechargeable battery, a refillable or replaceable container for e-liquid, and a coil that can be replaced, whether on its own or as part of a replaceable pod.

A pod kit ticks every box, which is why it's the obvious replacement. If you want the legal detail, our disposable vape ban guide goes through it.

Pod kit vs other types of vape

Pod kits sit at the small, simple end of reusable vapes. You'll also see:

  • Pen-style kits, which are tube-shaped with a small tank on top. They work much the same way but usually have a screw-on tank instead of a clip-in pod.
  • Box mods, larger devices with bigger batteries and separate tanks, mostly used for direct-lung vaping at higher power and lower nicotine strength.

For most people moving off disposables, the pod kit is the right size. It fits in a pocket, it's light, and it does MTL vaping well.

Looking after a pod kit

A little care keeps it working properly.

  • Keep the contacts between the pod and the battery clean and dry. A quick wipe with a tissue now and then is enough.
  • Don't let the pod run completely dry before refilling or swapping.
  • Charge with a decent cable and plug, and don't leave it charging overnight on a soft surface.
  • Swap the coil or pod when the flavour fades or turns harsh. Our guide to how long a vape pod lasts explains the signs.
  • Old pods, coils and batteries count as electrical waste. Retailers that sell vapes have to offer a take-back service for used vapes and parts, so use that rather than the household bin.

Once you've got the kit sorted, the fun part is picking flavours. Our flavour library is a good place to start.

Questions people ask

What comes in a pod vape kit?

Usually the battery (the main body of the device), one or two pods, sometimes a spare coil, a USB-C charging cable and a manual. Prefilled kits include filled pods instead of empty ones. E-liquid is normally sold separately for refillable kits.

What is the difference between an open and closed pod system?

An open system has a pod you fill yourself with any compatible e-liquid. A closed system only takes the manufacturer's own sealed, prefilled pods.

Can I use any pod with any pod kit?

No. Pods are designed for a specific device or range. A pod from one brand won't fit another brand's battery, and even pods within the same brand can differ between models.

How often do I need to charge a pod kit?

It depends on the battery size and how much you vape. Many people charge once a day or every couple of days. The kit's light or screen tells you when it's low.

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