• 1/1

Vapcell K40 21700 4000mah 30A/45A

Brand Vapcell
Series 21700
Model K40
Color brown
Weight 68g
Chemistry INR
Type flat top
Aliexpress Buy

Vapcell K40 21700 4000mah 30A/45A


u Model: K40

u Size: 21.1*70.6mm

u Typical Capacity: 4000mAh (0.2C discharge)

u Min capacity: 3900mAh (0.2C discharge)

u Nominal voltage: 3.60V

u Max Continuous Discharge Current:30A

u Max Discharge Current: 45A with 80℃ cut

u End-of-charge voltage: 4.20V

u End-of-discharge Voltage: 2.5V

u Weight: 68g ( Appr)

u Internal resistance: 10mΩ ( Appr) AC 1kHz

u Standard Charge: 2000mA,CCCV 100mA cut-off

u Quick Charge Current: 6000mA

Unique Features :

u Performance similar as 40T


Button top can be added, and the size is 2-3mm longer than a standard 21700 cell like flat top & unprotected. The button top is widely required for flashlights, doorbells and other devices.

Professional Reviews By Battery Mooch:


Discharge Graph: