Test/Review of Samsung INR18650-20R 2000mAh (Green)

[size=+3]Samsung INR-20R mAh (Green)[/size]



Official specifications:

• Li-ion high power cell for power tools
• Nominal Capacity : mAh
• Nominal voltage : 3.6V
• Max. discharge current: 22A
• Charging voltage 4.2 ±0.05 V

This battery is designed for high current, this does also mean that the capacity will be low.










As can be seen it can deliver about mAh at up to 20A current. The capacity increases at 15 and 20A, this is probably because the battery warms up.
The two cells does also have a very good tracking.





With a 20A discharge, the battery will only last for 6 minutes!











[size=+3]Conclusion[/size]

Being from Samsung this is a very good battery that can deliver a lot of current.
Where this battery is really interesting is at 10A and above.



[size=+3]Notes and links[/size]

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

OK. Thanks for that. Is there any advantages of each of them, other than the obvious uses for high current?

Up to now the IMR has been best at high current, but with this battery here Samsung has shown that INR also can do high current.

I am surprised at the short run time.

There is no surprice, with mAh (i.e. 2Ah) and 20A current the expected runtime will be 2/20 -> 0.1 hour or 6 minutes and because the battery is very good at maintaining the capacity at high current it is about 6 minutes at 20A.

Is INR technology just as safe as IMR technology?

The initial INR was not, how it is today is difficult to say, because manufacturers does not publish detailed specifications.
The safety tests a LiIon battery must pass today is very comprehensive (I do not expect that xxxxFire batteries has passed them).

It's interesting this cell's charging time (around 131min) is a bit faster than Efest IMR (mAh) V1 red (around 140min).