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Everything You Need to Know About Vape Batteries

About Vape Batteries

All vape kits requires an electrical current to pass through a coils inside your vape tank to heat up and vaporise the e-liquid inside. This means that beating heart of your vape device is the battery where the electrical power is sourced from. Without these great little pockets of energy, the vape device simply wouldn’t switch on. Like with all other elements of the vape device, there are plenty of things to factor in when choosing your vape battery. These include the battery life, the makeup of the battery itself within the casing, and whether it is compatible with the device you are using it for. Below are some basic tips for buying your vape batteries.

There are two types of vape batteries being used in vape devices. These are the classic internal vape battery and the external one. The simple difference is that one is built into your device and the other is added to it. Below are some of the strengths and weaknesses of each, giving you the chance to find the right fit for you and your lifestyle.

Internal vape batteries

Batteries which are built into your vape device means that you have one less installation task to worry about, also meaning that you are guaranteed a compatible battery for your device. After all, it wouldn’t have been installed in the first place if it wasn’t compatible for your device! On top of this, you’ll see a validated, factory approved piece of kit which is guaranteed to work.

The downside is that when your internal battery begins to degrade, you’ll have to change your entire vape device, and will mean less flexibility for you and your device.

External vape batteries

On the other hand, investing in a vape device which uses external batteries means that as long as the size is compatible, your vape device will run on an array of different batteries. This gives you the flexibility of brand, life span and chemical composition. The external battery means that if your battery begins to give a sub par performance, you’ll be able to replace it without having to throw away your whole vape device.

What types of external vape batteries are there?

There are mainly 2 different sizes of batteries used by most vape kits. The most popular and most common one being 18650 batteries. The second type is 20700 batteries and we will cover both types below. These batteries are mostly used in larger and more advanced vape devices, also known as sub-ohm vape kits. Before making purchase make sure to check which type of your battery your device uses as they are usually not cross compatible.

18650 vape batteries

The most common, measuring 18mm by 65 mm, the 18650 batteries is the most common size and type of battery used in advanced vape kits. Whilst most of these vape kits will let you charge the batteries inside the device, we always recommend using an external 18650 battery charger as these usually do a much better job. There is also the benefit of being able to have a set of batteries on charge whilst using another set in your vape kit and when you run out of battery you simply swap, meaning you will have no down time.

20700 vape batteries

the 20700 battery is the big brother to the 18650 battery. Again these are used by big sub-ohm vape kits that require a lot of power. These slightly larger 20 mm by 70 mm batteries also usually provide better battery life, as 20700 batteries have a slightly more hefty voltage and mAh (milli-amps per hour) rating.

Battery makeup

Batteries come with a range of different chemicals inside them. Each has their pros and cons, and getting the one which is suited to your vaping style and way of life is crucial for a satisfying vaping experience. Below are some of the choices you’ll have when shopping for vape batteries.

You’ll be able to know which type of battery you’re getting by the letters printed on them. These give an indicator to the chemicals which are inside them.


Many of the most popular vape batteries use this lithium-manganese-nickel hybrid battery due to it having many of the benefits of an IMR battery but with added current, capacity and temperatures than the IMR battery.


ICR batteries are high energy lithium-cobalt batteries which will need extra circuitry to ensure that they are safe to use. The batteries often have their protective circuitry added by a third party manufacturer, making them a little more unpredictable and less trustworthy than your other vape batteries.


IMR batteries are made from a mixture of lithium-manganese. These batteries are great for large flows of electricity without significant temperature rises. This means that if using IMR batteries, you will be less likely to see your vape device overheat. The design also means that your battery needs no protective circuitry as it is safe from the aforementioned overheating. This makes IMR batteries both safe and lightweight.

Vaping safely with batteries

There are a fair few precautions to keep in mind when you are handling vape batteries. Whilst they are safe to use, there are a few things you should avoid. Firstly, always ensure that your batteries are not loose and carried alongside other metallic objects. Never place your battery in front of an open flame or allow it to overheat too much, whilst overcharging your battery can lead to the same consequences as well.

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