Vape Batteries – Upgrade your Vape Power Supply
At the core of every vape device, from a simple pod kit to a powerful mod, a battery is behind all its functions, from powering the coil to vaporising the vape juice, which has a direct impact on its performance and reliability.
What Makes Vape Batteries So Important
Choosing the right battery for your vape is incredibly important but can often be overlooked with all the exciting vape modes available. Replacing or upgrading your vape battery directly improves its performance safely and will make it a whole lot more convenient to use your vape when you know you will not find issues with the power supply the more you use it. With reliable all-rounder options such as the 18650 and 21700 cells offering different capacities and power outputs, they can be adapted to perfectly suit your vape.
Removable batteries like those from Vapcell and Sinowatt make it easy to swap spares for longer use, whilst built-in battery options are ideal for vaping beginners for their simplicity. For sub-ohm vaping, higher power output batteries are essential to handle bigger clouds and higher wattages safely. With so many choices, understanding battery types helps ensure compatibility, better performance, and a safer, more enjoyable vape overall.
Popular Types of Rechargeable Batteries For Vaping
18650 Batteries
Arguably the most popular 18650 size, these cylindrical cells fit most mods and starter units. An 18650 3000mAh battery is regarded as the balance between capacity and discharge power. Some brands now offer 18650 3800mAh batteries, promising longer life but often with lower wattage ratings.
21700 Batteries
Quickly becoming a new standard for vape batteries, these more powerful batteries have a noticeably higher battery capacity of up to 4200mAh and with their higher 20A-30A safety ratings, they are completely safe to use with higher-powered vape mods.
26650 and 20700 Batteries
Larger cells like 26650 or 20700 and 21700 variations give serious battery life, though these require compatible devices.
18350 and 18500
Ideal for smaller vape mods or customised vape kits, the 18350 and 15800 off3er the perfect balance of power and portability, which pack enough charge for light use without becoming too bulky.
Molicel, Vapcell, Fogstar Energy - Champions of Battery Life
When it comes to buying batteries for your vape kit, a few standout brands have really made a name for themselves amongst UK vapers for their high-quality and reliable product range.
Molicel
Renowned for global reliability, Molicel’s P28A and the robust P42A 21700 battery are both favourites for high-drain vaping thanks to their strong performance and consistent safety record.
Vapcell
Known for dependable rechargeable batteries, including standouts like the K25 18650—a solid 2500mAh 20A cell—Vapcell puts a focus on safety, certification, and lasting quality.
Fogstar Energy
One of the leading names in the UK, Fogstar brings a wide selection of vape cells, battery wraps, and rigorously tested stock, making them a go-to for vapers looking for peace of mind.
Sinowatt
Consistently providing some of the very best options for vape cell replacement, Sinowatt have some of the most extensive range to cover a whole variety of different vapes, all with careful attention to quality and longevity.
Key Features of Vape Batteries Suitable For Mods and Pod Vape Kits
- Battery Capacity (mAh): Ranges from 2600mAh in basic cells to 3000mAh or 3800mAh for longer run time.
- Voltage: Most lithium-ion batteries work at a nominal voltage of 3.6V/3.7V, delivering up to 4.2V charged.
- Continuous Discharge Rating: Set as 15A, 20A, or potentially even higher, this is to help you identify how much electrical currently your battery can safely draw.
- Battery Indicator: Often featuring a digital screen or LED display, your battery will flag when it needs to recharge so you are never caught out when you need it most.
- Recharging: Use the proper charging cable and if possible, a dedicated battery charger for maximum lifespan.
Vape Battery Safety Tips
Every vaper must treat vape batteries carefully. Adhering to battery safety keeps you and your vape device safe:
- Always use the correct battery types that your mod requires.
- Don’t exceed discharge ratings (e.g., never push a 20A battery too hard).
- Store spares in a battery case, never loose in a pocket with coins or keys.
- Replace worn wraps with a fresh battery wrap.
- Only recharge using recommended equipment to avoid voltage spikes.
- Don’t over-drain cells – maintain good battery life cycles.
How Long Do Vape Batteries Last?
Battery life varies depending on use and build quality. An 18650 3000mAh battery might last a light vaper all day, while a heavy sub-ohm user may need 2–3 cells or a dual-mod setup. Expect roughly 200–300 cycles before noticeable degradation.
Long-lasting batteries like the 18650 3800mAh or P42A 21700 help maximise uptime. Choosing the right battery capacity for your vaping experience is very important and should be directly matched with your usage level, with lighter use opting for smaller capacities, and vaping enthusiasts that have custom vapes or mods should stick to higher mAh options.
Choosing Batteries for Different Types Of Vape Devices
It's important to bear in mind that built-in batteries are usually featured with pod kits or simpler vape starter kits, which means they will usually just charge with the supplied charging cable that came with the device. The only downside is these vape devices tend to have lower-capacity batteries that have a comparatively shorter life when put side by side with an external battery cell.
- Mods often take single 18650 or dual external batteries, which is what's behind their heightened power output.
- Vape mods for larger vapour clouds demand significantly higher wattage, so batteries rated for 20A or more are more ideal.
- Traditional vape pens may stick with smaller, integrated designs, but still rely on quality-tested cells.
By choosing the right battery, your coil heats evenly, your e-liquid delivers better flavour, and your mod batteries will serve you longer.
How Vape Batteries Work – The Basics
Every vape battery works on basic lithium-ion chemistry. Cells store chemical energy, then discharge it as electrical current to heat your coil. This vaporises e-liquid, creatinvapouror at your set wattage.
- External batteries: Removable, swappable, commonly 18650 batteries.
- Integrated batteries: These are found in compact vape starter kits and whilst fully rechargeable, they do eventually wear out, as they are not optimised for long life.
- Rechargeable vape batteries: Best for serious users of mods or rebuildables.
Shop Vape Batteries Online – Power, Safety & Performance
As vape batteries come in all shapes and sizes, there is a broad selection you can choose from that will perfectly suit your vaping style. For longevity the Vapcell 18650 is the best all-rounder with long battery life, whilst the much higher capacity Vapcell 18350 will give your vape some extra grunt if needed. With only quality lithium-ion batteries from trusted brands like Vapcell and Sinowatt available, you can upgrade the power of your vape with confidence you will be providing a reliable battery life extension.
Buying vape batteries online is simple with fast UK delivery, secure checkout, and a full range of spares, chargers, and accessories to suit any vaping style. From everyday vaping needs to high-performance setups, authentic lithium-ion batteries deliver the consistent power output your vape kit needs for smooth performance and better vapour production every time.
Vape Battery FAQS
How do Vape Batteries Work?
Before we jump into explaining the mechanics behind your device, there are a few basic scientific principles involved with vape batteries that you should know first. These include:
- Voltage (volts, V): Voltage is a measure of how much energy is passing electricity through your vaping device’s coil.
- Current (amps, A): The faster the electrical current flows, the hotter your vape coil will become.
- Resistance (ohms, Ω): Ohms are a measure of resistance. The lower the unit of ohms, the greater the production of vapour clouds will be.
- Power (Watts, P,W): Power refers to how much energy is being used or produced in a vape battery.
- mAH Capacity Rating: Measured by milliampere-hour, the mAH Capacity Rating of a vape battery translates to how much energy can be delivered within the time frame of one hour.
When a vaping device’s firing button is activated, both internal and external vape batteries function by passing voltage to the coil in your tank, where an electrical current is then drawn from the vape battery to heat it and produce delicious vapour! The flow of the current, i.e how quickly your device can heat up vapour, will vary depending on your coil’s resistance (ohms, Ω).
What are Vape Batteries Made Of?
Both internal and external batteries are made from Lithium-ion, which is commonly used in a number of other portable conventional electronics, such as electric vehicles or radio controlled toys.
Which Vape Battery Does My Device Need?
For sub ohm / direct to lung (DTL) devices, we recommend using a battery with a high Amp output. Those vaping with a mouth to lung (MTL) device should stay with a lower Amp output battery - this is because MTL devices have a higher coil resistance which requires less power than DTL device’s low resistance coils.
Are vape Batteries Safe?
Most battery chargers and vaping devices will have short circuit and over charge protection, however it is important to be aware of several general battery safety precautions before hitting your vape.
