Efest 20700 Rechargeable Vape Battery (3100mAh 30A)

3100mAh, 30A Continuous Discharge Rate
Battery Capacity
3000mAh, 3100mAh
Battery Discharge
Battery Size
Battery Type
Single 20700
Battery Voltage
Made In

From £9.99

Temporarily Out Of Stock

The Efest 20700 3100mAh battery has been designed for larger vape kits and devices.

20700 vape batteries are large than standard 18650 vape batteries, so always check compatibility before use. These batteries feature a 3100mAh capacity with a 30A continuous discharge rate offering a balance of output and battery life.

Check out our Battery Safety Guide for tips on keeping your batteries in tip-top condition.


  • Flat Top
  • Bottom: Non-Protected
  • Capacity: 3100mah
  • Max Continuous discharge current: 30A
  • Voltage: 3.7V
  • Discharge temperature range:-10°C—60°C

Please Note: The Pulse Discharge Rate refers to the maximum output of a fully charged battery, the Continuous Discharge Rate refers to the maximum power output of a battery regardless of its level of charge.

We always recommend that you do not attempt to work outside of the max Continuous Discharge Rate when using these batteries with an unregulated 

Disclaimer On Use Of Batteries


Batteries must:

  • Be charged correctly: The current and voltage used to charge the batteries must not be greater than is set out in the instructions. Batteries should not be charged in excessively cold or hot temperatures. Do not leave the battery in the charger for over 24 hours. Do not leave the battery unattended whilst charging. Never use a modified or damaged charge.
  • Use the correct discharge current: The discharging current shouldn't exceed the level set out in the instructions. If it does this may cause the battery to overheat.
  • Store the batteries at the right temperature: batteries should be stored at an ambient temperature in dry, well-ventilated conditions. You should avoid excessive hot or cold.
  • Keep your batteries in a case when not in use. Don't carry them around loose in bags or pockets: It's vitally important that batteries do not come into contact with any metal objects as this can lead to leakage, explosion or fire.
  • Not be used if they are damaged, abnormally hot, discoloured, deformed, if the wrapping is not intact or if any other abnormal conditions are detected. Dispose of the batteries if this occurs.
  • Not be allowed to come into contact with water or fire. Dispose of the batteries if this occurs.
  • Not be put in microwave ovens or in any high pressure container.
  • Not be used or assembled with other different makes, types or models of batteries.
  • Avoid excessive physical shock or vibration.

If liquid leaking from a battery gets in your eyes, don't rub your eyes, wash them with clean water and seek medical attention immediately. Ensure that the battery is disposed of immediately and that any liquid that has leaked from the battery is contained and removed as it may cause explosion or fire.

Each country has its own rules on the disposal of batteries. Please ensure that you dispose of the batteries in accordance with local regulations.

For more information about battery safety please see our Safety Tips For Vape Batteries.

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5 stars (1)
4 stars (1)
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1 star (0)

By Madcaz from London

Great Battery (27 July 2020)

Have been using these Efest batteries for a long time now, they charge quite fast but they don't last as long as you'd think. Saying that comparing to other manufacturers and they all last about the same between charges.
These batteries tend to last me 6-8months before replacing but again same as most manufacturers

By Liam from Kent

Surprising (11 June 2019)

After reading some bad press around efest and the performance of their batteries I was apprehensive buying these but I have been pleasantly surprised by these.
The battery performs well in my sub ohm devices, my only concern is that it doesnt seem to last as long as you would expect given the capacity of the battery and the battery reader on my devices seems to move up and down randomly throughout the day when indicating charge. This doesnt seem to have affected performance however.

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