Test/review of Ampsplus INR18650 2500mAh (Black)

Batteries and Chargers Rechargeable Batteries
1

Ampsplus INR18650 2500mAh (Black)







Official specifications:

  • Size: 18.35mm x 64.95mm

  • Nominal Voltage: 3.65V

  • Nominal Capacity: 2500mAh

  • Minimum Capacity: 2450mAh

  • Charging Metod: CC/CV 4.20CV ±0.05V

  • Discharge Voltage: 2.50V (Average Cut Off)

  • Charging Current CC: 1250mA , 135min

  • Rapid Charging Current: 4000mA , 55min

  • Continuous Discharge Current: 20A

  • Internal Resistance: 0.04 Ohm

  • Battery rate: 8C

  • Weight: 48 gr.max

  • Colour: Black , Silver

  • Version: Flat Top

  • Protection: No




This is a high current 18650 cell with moderate capacity.











The discharge curves has nice tracking and nearly constant capacity up to 20A.





The battery warms up during a 20A discharge, but not too much.



30A discharge is not really for continuous discharge.















Conclusion

This is a very good high current cell.



Notes and links

The batteries was supplied by ecoluxshopdirect.co.uk 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
2

Thanks for the review HKJ. :+1:

3

Whoa! So this is a 25R? Did Samsung update this cell? It significantly outperforms previous tests and even the VTC5A by a good margin.

EDIT: I don’t know what happened but I see that now. I somehow was comparing the 20A of the 25R and the 30A trace of the VTC5A. Maybe there was an error loading that curve and I didn’t notice it the first time. I was just comparing it to another cell that was inferior to the VTC5A a minute ago and was like wait… what the??

4

Just looking at VTC5A and this cell in the HKJ comparator. No, it’s not better, it’s significantly worse except for slightly higher capacity.

5

@Agro

I realized that I had made a mistake and updated the post. Thanks for pointing that out anyway. I’d hate to have wasted time hunting down something that wasn’t there

6

Great Job , Thank you HKJ :slight_smile: