Test/review of Golisi IMR18650 3000mAh G30 (Gold)

[HKJ]

Golisi IMR18650 3000mAh G30 (Gold)







Official specifications:

• Nominal capacity: 3000mAh

• Constant current: 25A

• Nominal voltage: 3.7V

• Discharge cut-off voltage: 2.75V

• Charging cut-off voltage: 2.20 +/- 0.05V

• Internal impedance: 30mOhm

• Standard charging current: cc/cv <=2A

• Size: Diameter: 18mm, Height: 65mm

• Net weight: 46g

• Cycle times: >800

• Operating temperature: Charging: 0°C ~ 45°C, discharging: –20°C ~ 60°C

• Storage temperature: Room temperature or below.

This is a high current 18650 with fairly high capacity.










The battery handles up to 15A nicely, the two cells tracks very fine.



At 15A the cell gets fairly hot



At 20A I had to stop the discharge due to temperature.



And also at 30A.















Conclusion

The cell can handle a good amount of current and has good capacity, but rating the cell for 25A continuous discharge is a optimistic.
I will call it a good high cell.



Notes and links

The batteries was supplied by Golisi 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