Test/review of Samsung INR18650-20S 2000mAh (Cyan)

Batteries and Chargers Rechargeable Batteries
1

Samsung INR18650-20S 2000mAh (Cyan)







Official specifications:

  • Standard discharge capacity: 2000mAh (Charge 1A, discharge 0.4A)

  • Rated discharge capacity: 1950mAh (Charge 4A, discharge 10A)

  • Nominal voltage: 3.6V

  • Standard charge: CCCV, 1A, 4.2V, 100mA cut-off

  • Rated charge: CCCV, 4A, 4.2V, 100mA cut-off

  • Maximum continuous discharge: 30A

  • Discharge cut-off voltage: 2.5V

  • Cell weight maximum: 48g

  • Cycle life: 250 cycle to 60% at 30A discharge

  • Operating Temperature: Charging: 0°C ~ 50°C, Discharging: –20°C ~ 80°C

  • Storage Temperature: 1 month: –30°C ~ 60°C, 3 month: –30°C ~ 45°C, 1.5 year: –30°C ~ 25°C



This is high current batteries with fairly low capacity. They are rated for 250 cycles with 30A discharge!










Very nice matching discharge curves with nearly constant capacity at any current.





This battery do not get hot at 30A, only warm.















Conclusion

This battery may not have much capacity by todays standard, but it is very good at high current and fast charging.



Notes and links

The batteries was supplied by Vapcell 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 test!
Any chance that we can see the cells w/out wrappings?
Also, would it be possible to know the ambient temperature during the test?

3

Ambient temperature is between 26 and 27°C

4

When using HKJ‘s comparator the 25S is still better than the 20S, at least up to 20A. Is there anything better than Samsung‘s 25S? How about the Molicell P26A?

5

Thanks for the review!

SEE Post #24 and #25 BELOW

It certainly appears that the Apexium INR 18650 2600mAh is the P26A cell although AMY [Sales engineer] from Apexium has given me confusing and contradictory info. Bewteen HKJ’s[Tested Apexium and Vapcell 18650 2600mAh-25A-Green], Mooch’s test[Only tested P26A] ,it certainly seems like it is the case.

My Hometown dealer is the only dealer in the USA who will be selling GUARANTEED GENUINE GRADE “A CELLS” from Molicel[P26A]. Jon will have them for sale on January 2nd, or 3rd….and so will I!,In my possession,Not for sale!! :+1:

SEE LINK BELOW:

https://imgur.com/a/Zr4Ie1j?fbclid=IwAR1APGF4GXJnoKlOxG60KyA_MFdSx2p7rqBulZYOk2-UQvm7FJToDwe8MnU

6

Why without the wrapping? It looks like a OEM cell with OEM wrapping to me. What could be interesting to see under the wrapping?

7

Thanks for specifying the temp HKJ.

Batch and grade. Mostly the latter.

8

TIL