VAPCELL 21700 4000 mAh 30A 3.7V Rechargeable High Capacity Lithium Battery, Continuous 30A

Model K40

This product is a lithium battery charging pool, please do not make the battery over discharge, otherwise the capacity failure for a long time no use of advice full of electric storage!

The lithium battery life theory is 1000 cycles.

Model K40

high drain Vapcell K40 21700 4000MAH 30A continuous discharge current rechargeable battery pk 40T

  • Size: 21.1*70.6mm
  • Typical Capacity: 4000mAh (0.2C discharge)
  • Min capacity: 3900mAh (0.2C discharge)
  • Nominal voltage: 3.60V
  • Max Continuous Discharge Current:30A
  • Max Discharge Current: 45A with 80℃ cut
  • End-of-charge voltage: 4.20V
  • End-of-discharge Voltage: 2.5V
  • Weight: 68g ( Appr)
  • Internal resistance: 10mΩ ( Appr) AC 1kHz
  • Standard Charge: 2000mA,CCCV 100mA cut-off
  • Quick Charge Current: 6000mA
  • Batteries are sold individually.

Unique Features :

Performance similar as 40T

 Package Includes:

  • 1x 21700 


Fully charge before first use.
Never short (connect positive and negative size) battery.
Keep them always in battery case, or any other insulating material.
Never keep this battery together with metal objects (short circuit can happen if you do).
Never carry bare cell in your pocket with keys, change or any other metal objects.



Make sure to properly prime each coils and pods before use.

Warning: If the coils has a sub-ohm resistance, please make sure you have a great understanding and technical knowledge on how to use mods and batteries that can handle Sub-Ohm coils. Do not use short or flat 510 connection on any hybrid or hybrid style device. If you are not familiar or unsure of particular products or set-ups, please do not use it. Always use proper precautions and handling.

Note: There is always an inherent risk when using any rechargeable batteries at anytime and under any circumstances. Coolvape are not held responsible for any damage for any modification of the batteries, chargers, devices and other products that we carry in any form or shape, this is including pack making.