Test/review of Vapcell INR21700 3000mAh T30 (Purple)

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HKJ
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Test/review of Vapcell INR21700 3000mAh T30 (Purple)

Vapcell INR21700 3000mAh T30 (Purple) 2021
DSC_4685
Official specifications:


  • Model: T30
  • Size: 21.6*70.9mm
  • Typical Capacity: 3000mAh (0.2C discharge)
  • Min capacity: 2900mAh (0.2C discharge)
  • Nominal voltage: 3.60V
  • Max Continuous Discharge Current: 30A
  • Max Discharge Current: 50A with 80°C cut
  • End-of-charge voltage: 4.20V
  • End-of-discharge Voltage: 2.5V
  • Weight: 70g ( Appr)
  • Internal resistance: 8mOhm ( Appr) AC 1kHz
  • Standard Charge: 2000mA,CCCV 100mA cut-off
  • Quick Charge Current: 15000mA below 45°C

Vapcell%20INR21700%203000mAh%20T30%20(Purple)%202021-info
This is a high current 21700 battery.
DSC_4683 DSC_4684
DSC_4686 DSC_4687
DSC_4688
DSC_4689
DSC_4690
Vapcell%20INR21700%203000mAh%20T30%20(Purple)%202021-Capacity
The two cells matches very nicely and capacity is nearly constant at different loads.
Sadly my holder melted at the 30A test, probably because my temperature sensor was out of battery preventing my script from stopping the test if the battery got hot.
Vapcell%20INR21700%203000mAh%20T30%20(Purple)%202021-CapacityTimeHours
Vapcell%20INR21700%203000mAh%20T30%20(Purple)%202021-CapacityTime
Vapcell%20INR21700%203000mAh%20T30%20(Purple)%202021-Energy
Vapcell%20INR21700%203000mAh%20T30%20(Purple)%202021-PowerLoadTime
Vapcell%20INR21700%203000mAh%20T30%20(Purple)%202021-TripCurrent
Vapcell%20INR21700%203000mAh%20T30%20(Purple)%202021-Charge
Discharge-Vapcell-T30-pulse-1.0%2010%2010-IR
Conclusion
It looks like a good high current battery, it maintain voltage well at 30A, but may need a temperature cut-off.
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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries

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

GhostJoe
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Joined: 05/07/2021 - 10:14
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Thanks a lot HKJ, “Internal resistance: 8mOhm ( Appr) AC 1kHz” Obviously it is not a Samsung 30T rewrap.

Based on spec and images, it might be the Chinese Qi Xin 21700.
https://qixinbattery.en.alibaba.com/product/1600074572536-817243732/Hot_...

Superstocker
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Thanks HKJ!

Correllux
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Hey, what’s that smell….do you smell something burning? Smile