Keeppower IMR18650 NH1826 2600mAh (Black) 2016
%202016/DSC_7318.jpg)
Official specifications:
- Nominal capacity: 2600mAh
- Minimum capacity: 2500mAh
- Nominal voltage: 3.70V
- Charge voltage: 4.20V 0/-0.05V
- Standard discharge cut-off: 2.50V
- Standard charge current: 1000mA
- Charge current cut-off: 50mA
- Max. Constant discharge current: 30A
- Max. Pulse discharge current: 60A
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-info.png)
A very high current 18650 cell.
%202016/DSC_7316.jpg)
%202016/DSC_7317.jpg)
%202016/DSC_7319.jpg)
%202016/DSC_7320.jpg)
%202016/DSC_7321.jpg)
%202016/DSC_7322.jpg)
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-Capacity.png)
The two cells tracks nicely and can deliver a lot of current.
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-Temp-15.0.png)
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-Temp-20.0.png)
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-Temp-30.0.png)
At 30A they did get too hot and I had to stop the discharge a some seconds before the cell was empty. The cells did reach 93°C after I terminated the discharge.
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-CapacityTimeHours.png)
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-CapacityTime.png)
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-Energy.png)
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-PowerLoadTime.png)
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-TripCurrent.png)
%202016/Keeppower%20IMR18650%20NH1826%202600mAh%20(Black)%202016-Charge.png)
Conclusion
This is very good high current cells. The very high current capability means the cells are a bit below top capacity.
Notes and links
The batteries was supplied by Keeppower 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