Vapcell INR26650 5500mAh (Red) 2019



Official specifications:

• Model: INR26650 5500mah 20A
• Size: 26.6*65.2mm
• Nominal voltage: 3.60V
• End-of-charge voltage: 4.20V
• End-of-discharge Voltage: 2.5V
• Typical Capacity: 5500mAh (0.2C discharge)
• Min capacity: 5400mAh (0.2C discharge)
• Weight: Max: 96g
• Internal resistance: Max: 16mOhm at AC 1kHz
• Standard Charge: 2000mA, CCCV 100mA cut-off
• Charging Time: 4hours(standard charge)
• Quick Charge Current: 3000mA
• Max Continuous Discharge Current: 20000mA

A high capacity 26650 cell that can deliver a good amount of current.












The two cells math nicely and capacity is nearly constant up to 15A, at 20A I stop the test slightly early due to temperature.
It looks like there is a problem with one of the cells at 30A
























Conclusion

This 26650 has a nice combination of high capacity and fairly high current, but the rated 20A is best done with a little bit of cooling.



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