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21700 Vape Batteries

21700 vape batteries last significantly longer when compared to smaller batteries, reducing the need for frequent recharges. With a capacity of up to 4800mAh, these 21700 batteries offer the sustained power required by sub-ohm vapers who enjoy high-wattage vaping and cloud-chasing. 21700 batteries are rechargeable and offer up to 50% more capacity than standard 18650 batteries.
At Grey Haze, we stock 21700 cells from reputable brands such as Molicel and Vapcell, ensuring you receive reliable and high-performing vape batteries. If you use a 21700 mod, upgrading to a 21700 battery is the best choice for extended vaping sessions. Shop our extensive collection today and find the perfect power cell for your 21700 vape mod! Also, be sure to check out our Guide to Battery Safety for more information!


    Sold out

    Vapcell

    Vapcell P42A 21700 Battery

    £7.99
  • Vapcell

    Vapcell INR21700 Battery

    £7.50

What is a 21700 Battery?

A 21700 battery is a type of rechargeable Li-ion (Lithium Ion) battery that gets their name from its size (21mm x 70mm). They’re a popular type of vape battery, as they have a large overall energy capacity, with 5000mAh being the largest. This is a big advantage over more common batteries, such as 18650s, as 21700s last longer, even when used at higher wattages.

FAQ - Frequently Asked Questions

How long does it take to charge a 21700 battery?

How long it takes to charge a 21700 battery can vary depending on its size (mAh), as well as the charger you use. A fast-charger can charge the battery in as little as 1.5 hours, but can damage it over time. A less powerful battery charger can take as long as 4 hours, but can help extend the batteries life span.

What vape mods take 21700 batteries?

At Grey Haze we have the perfect 21700 vape mod for you! Our range includes impressive mods such as the Vaporesso Target 100 and the Vaporesso Armour S. If you’re looking for a 21700 mod, check out one of these high-end box mods that are compatible with a 21700 vape battery and offer up to 100W of power.

How long does a 21700 battery last?

A 21700 battery can last anywhere from 500 - 1000 charges, depending on how well you look after it. To make your battery last longer try to avoid letting it fallow below 20% charged, or charging it over 100%. It’s also best to keep your batteries at a moderate temperature as extreme cold or heat can shorten their lifespan significantly.

What is the difference between 18650 and 21700 batteries?

A 21700 battery is a rechargeable lithium ion battery, the same as an 18650 battery. However, a 21700 is 21 mm in diameter and 70 mm long, with a maximum capacity of 5000mAh. 18650 batteries on the other hand are 18mm in diameter and 65mm long, with a maximum capacity of 3500mAh. Therefore, 21700 batteries have a higher capacity overall and can provide power for longer than the 18650s.

Where to buy 21700 batteries?

You can buy 21700 cells right here at Grey Haze! We stock the best 21700 batteries from as little as £7.99 each. Our collection includes top brands such as Molicel and Vapcell.