Test/review of Vapcell INR21700 3100mAh (Purple)

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HKJ
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Test/review of Vapcell INR21700 3100mAh (Purple)

Vapcell INR21700 3100mAh (Purple)

DSC_2060

Official specifications:


  • Model: NCR21700
  • Size: 21.0*70.2mm
  • Nominal voltage: 3.6V
  • End-of-charge voltage: 4.20V
  • End-of-discharge Voltage: 2.50V
  • Typical Capacity: 3100mAh (0.2C discharge)
  • Min capacity: 3000mAh (0.2C discharge)
  • Weight: Max:68g
  • Internal resistance: Max:8mOhm
  • Standard Charge: 2000mA,CCCV 100mA cut-off
  • Charging Time: 3hours(standard charge)
  • Quick Charge Current: 4000mA
  • Max Continuous Discharge Current: 35000mA
  • Operating Temperature: Charging: 0°C ~ 45°C, Discharging: -20°C~70°C
  • Storage: Temperature -5°C~35°C, Humidity
  • Standard environmental condition: Temperature: 23±5°C
  • Humidity: 45-75%RH

Vapcell%20INR21700%203100mAh%20(Purple)-info

One of the new slightly larger batteries, this one with fairly low capacity, but very high current capability.

DSC_2057DSC_2058DSC_2059

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Vapcell%20INR21700%203100mAh%20(Purple)-Capacity

Good tracking, expect a small capacity difference. The batteries has nearly constant capacity op to 30A and the 35A rating looks very realistic.

Vapcell%20INR21700%203100mAh%20(Purple)-Temp-15.0

Vapcell%20INR21700%203100mAh%20(Purple)-Temp-20.0

Vapcell%20INR21700%203100mAh%20(Purple)-Temp-30.0

The cells do not get too warm at 30A discharge current.

Vapcell%20INR21700%203100mAh%20(Purple)-CapacityTimeHours

Vapcell%20INR21700%203100mAh%20(Purple)-CapacityTime

Vapcell%20INR21700%203100mAh%20(Purple)-Energy

Vapcell%20INR21700%203100mAh%20(Purple)-PowerLoadTime

Vapcell%20INR21700%203100mAh%20(Purple)-TripCurrent

Vapcell%20INR21700%203100mAh%20(Purple)-Charge



Conclusion

This is a good high current battery.



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

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

DavidEF
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Location: Salisbury, North Carolina, USA

Thanks. Being able to actually sustain 30A+ continuous draw might be worth the trade-off of low capacity for some people.

Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone.
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Agro
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Looks nearly identical to 30T…Possibly a cherry-picked 30T, which would explain slightly higher capacity.