Test/review of Vapcell NCR21700 4800mAh (Purple)

[size=+3]Vapcell NCR21700 4800mAh (Purple)[/size]



Official specifications:

• Model: vapcell INR21700
• Size: 21.0*70.0mm
• Nominal voltage: 3.6V
• End-of-charge voltage: 4.20V
• End-of-discharge Voltage: 2.50v
• Typical Capacity: 4800mAh (0.2C discharge)
• Min capacity: 4700mAh (0.2C discharge)
• Weight: Max:69g
• Internal resistance: Max:14mOhm
• Standard Charge: 1500mA,CCCV 100mA cut-off
• Charging Time: 5 hours (standard charge)
• Quick Charge Current: 4000mA
• Max Continuous Discharge Current: 20000mA
• Operating Temperature: Charging: 0°C ~ 45°C, Discharging: -20°C ~ 75°C, Storage Temperature: -5°C ~ 35°C
• Storage Humidity: <75%RH
• Appearance: Without scratch, distorion, contamination and leakage
• Standard environmental condition: Temperature: 23±5°C, Humidity: 45-75%RH, Atmospheric Pressure: 86-106KPA

A very high capacity cell in the new 21700 format.











The discharge curves tracks nicely and the battery has lots of capacity, but it is not a high current cell.



At 15A I have to stop the discharge early due to temperature





At 30A it gets hot fairly fast.















[size=+3]Conclusion[/size]

This battery has very good capacity, but is best used at 10A or lower for continuous usage.



[size=+3]Notes and links[/size]

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

The positive pole looks like it is deeply recessed?

SubLGT said:

The positive pole looks like it is deeply recessed?

Click to expand...

It is.