21700 Vape Mods

21700 vape mods are the go-to for vapers who are tired of charging halfway through the day. The cells are bigger than 18650s, most sitting around 4000 to 5000mAh, and that extra capacity makes a real difference. One charge can last from morning to night on a single 21700 mod.

Whether you're looking for a 21700 box mod, 21700 squonk mod or 21700 mech mod our collection covers every type of 21700 mod we stock. Single battery box mods, dual 21700 squonk mods, mech mods, SBS mods, and boro setups. If it takes a 21700 cell, it's here.

All 21700 vape mods are stocked in the UK and dispatched from our warehouse with full UK warranty and support with free UK delivery on orders over £30. We dispatch 7 days a week and price match any UK competitor. Need 21700 batteries to go with your mod? We stock those too.

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Single vs Dual 21700 Mods

A single 21700 vape mod is what most people reach for day to day. One cell, plenty of power for anything up to about 80W, and light enough to carry in a pocket. For MTL or mid wattage vaping, you won't need more than that. Most 21700 box mods offer adjustable wattage and temperature control.

Lost Vape Centaurus N100 battery image showing a transparent cutaway of the mod with a single 21700 cell installed, also compatible with 18650 batteries.

If you're running sub ohm coils at 100W or higher, dual 21700 mods are worth the extra size. Two cells means you're not dealing with battery sag halfway through the afternoon, and the wattage headroom is there when you need it.

Setup	Batteries	Best For	Typical Wattage
Single 21700	1 x 21700	Daily carry, MTL, SBS mods	30 to 80W
Dual 21700	2 x 21700	Sub ohm, high wattage, squonk	80 to 200W+

Why Choose Ecigone for 21700 Vape Mods?

We've got one of the biggest 21700 vape mod selections in the UK. Not just a few box mods tucked in with the 18650s. We stock every form factor, from single cell SBS mods right up to dual 21700 powerhouses, plus squonk mods, mech mods and boro setups. Browse our full vape mods collection for 18650 options too.

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Price Match - we'll beat any UK price
Every Form Factor - box, squonk, mech, SBS, boro
Single and Dual - both battery configs in stock
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Frequently Asked Questions

What's the difference between a 21700 and an 18650 battery?

Size and capacity. A 21700 battery is a bigger cell, roughly 4000 to 5000mAh depending on the brand. An 18650 tops out around 2500 to 3000mAh. In practice, that means fewer charges and longer sessions. Loads of 21700 mods come with an 18650 adapter in the box too, so you're not locked into one size.

Should I get a single or dual 21700 mod?

It comes down to how much power you use. Vaping under 80W on an RTA or pod tank? A single 21700 mod will get you through the day no problem. Running big sub ohm builds above 100W? Go dual. Dual 21700 mods are ideal for high wattage vaping above 100W, giving you proper headroom.

New to vaping or just unsure about something?

Don't worry - vaping might seem a bit confusing at first, but it really doesn't need to be. If you're unsure where to start or just want things explained clearly, we've put together a set of simple guides to help you understand the basics. From choosing the right vape kit to looking after your vape and learning the different ways to vape, everything's covered in plain language.

Plus, each guide includes a helpful video from our reviewer, Jaff Vapes, who walks you through each topic and shows you exactly how it all works.

Here are four handy guides to get you started. And if you need any extra help, our friendly support team is here 7 days a week via live chat - or give us a call on 01246 260010 and we’ll be happy to assist.

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