Shockli IMR26650 5000mAh (Black)



Official specifications:

• Nominal Voltage: 3.7V
• Nominal Capacity: 5000mah (1A Discharge)
• Discharge Cut-off voltage: 2.75 V
• Standard Charge: 1.0 A /4.2V±0.05V (Recommend 1.0A-2.0A)
• Maximum charge current: 4A
• Continuous Discharge Current: 20A
• MAX Discharge Current: 30A
• Initial Impedance: <20 mOhm
• Cycle Life: 500times to 60%
• Charging Time: Standard charge: 4hours, Rapid charge: 2hours
• Size(mm): 26.7±0.2mm(Diameter) x 65.2±0.3 mm(Length)
• Weight(g): 95±2g
• Operating environment: Charging: 0°C ~ 45°C, Discharging: -20°C~60°C
• Storage environment: Temp(-20°c -35°c) / Humidity (65±20%)

This is fairly high current 26650 cells.










The discharge curves looks good with good tracking and fairly constant capacity.



I wonder why there is this much temperature difference between the cells, but both handle the 15A discharge without problems.
I suspect that my battery holder was damaged and that was the reason for the higher temperature.





Here both batteries tracks perfectly in temperature (I have replaced the battery holder) and they can handle a 30A discharge, but gets very hot.















Conclusion

This cell has good performance at higher currents and a fairly high capacity.



Notes and links

The battery was supplied by shockli.com 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