Test/review of Vapcell INR21700 3750mAh (Blue) 2018

Batteries and Chargers Rechargeable Batteries
1

Vapcell INR21700 3750mAh (Blue) 2018







Official specifications:

  • Model: INR20700

  • Size: 21.6*70.5mm

  • Nominal voltage: 3.6V

  • End-of-charge voltage: 4.20V

  • End-of-discharge Voltage: 2.50V

  • Typical Capacity: 3750mAh (0.2C discharge)

  • Min capacity: 2650Ah (0.2C discharge)

  • Weight: Max:70g

  • Internal resistance: Max:10mOhm

  • Standard Charge: 1500mA,CCCV 100mA cut-off

  • Charging Time: 3.5hours(standard charge)

  • Quick Charge Current: 3000mA

  • Max Continuous Discharge Current: 30000mA

  • Operating Temperature: Charging: 0°C ~ 45°C, Discharging: –20°C~75°C

  • Storage: Temperature –5°C~35°C, Humidity <75%RH

  • Standard environmental condition: Temperature: 23±5°C, Humidity: 45-75%RH













The discharge curves for the two cells matches nicely and the cell is fairly constant in capacity at any current.





















Conclusion

These cell looks to be good quality and can deliver up to the rated 30A



Notes and links

The batteries was supplied by Vapcell for review.

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries
2

Thanks for the test HKJ. There is a good choice in 21700 cells these days, from low to high capacity, from medium drain to very high drain :slight_smile: