Test/review of Keeppower IMR18650 NH1835 3500mAh (Black) 2016

Batteries and Chargers Rechargeable Batteries
1

Keeppower IMR18650 NH1835 3500mAh (Black) 2016







Official specifications:

  • Nominal capacity: 3500mAh

  • Minimum capacity: 3400mAh

  • 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: 10A

  • Max. Pulse discharge current: 20A













The discharge curves looks very good with nice tracking, except the 20A curve, the battery did blow a fuse during that discharge.
This also means this test will be missing a few curves.











Conclusion

The battery is very good, but cannot sustain 20A discharge, this matches the specifications.



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
2

First time a blown fuse happened during your testing, no?
What was battery’s temperature when this happened?

3

Not the first time, but it is very seldom it happens.
Probably rather high, but my temp sensor was out of battery, that is the reason for no temperature track.