Free Royal Mail Tracked 24 on orders over £20
Trustpilot

Vape Batteries

Power your mod with genuine high-drain vape batteries from trusted names including Efest, AWT, Ampking and Golisi. Our 18650 and 20700 cells are built for the current that regulated vape mods and sub ohm kits demand. Pair them with a dedicated battery charger and a battery case for safe everyday use.
View as

What Batteries Do Vape Mods Use?

Most mods with removable batteries take 18650 cells, the most common size. Some take larger 20700 or 21700 cells, which hold more charge in a slightly bigger body. The numbers describe the cell's size: an 18650 is 18mm wide and 65mm long. The sizes aren't interchangeable, so check which cell your mod is designed for. Many pod kits and vape pens have built-in batteries and don't need separate cells at all.

mAh and Amps: Reading a Battery's Ratings

Two ratings matter. mAh (capacity) tells you how long a cell lasts between charges. Amps (continuous discharge rating) tells you the maximum current the cell can safely deliver. For sub ohm and high-wattage vaping you need a high-drain cell, and you should never vape or build beyond a battery's continuous amp rating. Higher-capacity cells often have slightly lower amp ratings, so choose based on how you vape. Our battery jargon guide and Ohm's law guide explain the details.

Battery Safety

Lithium-ion cells are safe when they're looked after. Carry spare batteries in a battery case, never loose in a pocket or bag where they can touch keys or coins. Check the plastic wrap regularly and replace or rewrap any cell with tears or nicks. In dual-battery mods, use a matched pair of the same make, model and age, and charge them together. When a battery reaches the end of its life, recycle it at a battery collection point rather than putting it in household waste.

Vape Batteries FAQs

Can't see your question? Get in touch.

Which battery does my vape mod need?

Check your mod's manual or product page for the battery size (usually 18650, 20700 or 21700) and how many cells it takes. Then choose a high-drain cell from a reputable brand with an amp rating that suits the power you vape at.

Is an 18650 battery the same as an AA battery?

No. An 18650 is a rechargeable 3.7V lithium-ion cell, larger than an AA and with a much higher power output. AA batteries can't be used in vape mods.

Can I use an 18650 battery in a 21700 mod?

Only if the mod comes with an adapter sleeve that supports 18650 cells. Otherwise, use the battery size the mod is designed for.

How long do vape batteries last?

A charge usually lasts from several hours to a full day, depending on the cell's capacity and how much you vape. Over time, every rechargeable cell loses capacity. Replace batteries when they no longer hold a charge well, or straight away if the wrap is damaged or the cell gets unusually hot.

Should I charge vape batteries in my mod or in a charger?

A dedicated external charger is the safest way to charge removable cells, and it lets you charge spares while you vape. Many mods can charge by USB-C, which is handy for occasional top-ups.

Back to top