Test/review of Molicel INR18650-P28A 2800mAh (Gray)

HKJ

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Molicel INR18650-P28A 2800mAh (Gray)

DSC_5287.jpg


Official specifications:
  • Typical capacity 2800mAh
  • Minimum capacity: 2600mAh
  • Nominal voltage: 3.6V
  • Standard charge current: 2.8A
  • Maximum charge current: 6A
  • Discharge cut-off voltage: 2.5V
  • Charge cut-off voltage: 4.2V
  • Maximum discharge current: 35A
  • Internal resistance: 20mOhm
  • Internal resistance DC: 20mOhm (10A/1s)
  • Ambient temperature: Charge: 0°C ~ 60°C, Discharge: -40°C ~ 60°C
  • Typical cycle life: 400 cycles to 80% at 20A discharge.
Molicel%20INR18650-P28A%202800mAh%20(Gray)-info.png


This is a high current 18650 cell with fairly good capacity.

DSC_5288.jpg
DSC_5289.jpg


DSC_5290.jpg

DSC_5291.jpg


olicel%20INR18650-P28A%202800mAh%20(Gray)-Capacity.png


The two cells tracks very nicely, at 30A the battery got hot and I stopped the test before the battery was empty.

licel%20INR18650-P28A%202800mAh%20(Gray)-Temp-15.0.png


licel%20INR18650-P28A%202800mAh%20(Gray)-Temp-20.0.png


licel%20INR18650-P28A%202800mAh%20(Gray)-Temp-30.0.png


INR18650-P28A%202800mAh%20(Gray)-CapacityTimeHours.png


el%20INR18650-P28A%202800mAh%20(Gray)-CapacityTime.png


Molicel%20INR18650-P28A%202800mAh%20(Gray)-Energy.png


l%20INR18650-P28A%202800mAh%20(Gray)-PowerLoadTime.png


cel%20INR18650-P28A%202800mAh%20(Gray)-TripCurrent.png


Molicel%20INR18650-P28A%202800mAh%20(Gray)-Charge.png


P28A%202800mAh%20%28Gray%29-pulse-1.0%2010%2010-IR.png




Conclusion

A good high current cell and not that different from the P26A



Notes and links

The batteries was supplied by a reader 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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries
 
Last edited:

badtziscool

Flashlight Enthusiast
CPF Supporter
Joined
Oct 13, 2006
Messages
1,691
Geez. That is an insane amount of current the cell can provide with less voltage sag at very high current draw compared to Sony VTC6.
 

knucklegary

Flashlight Enthusiast
Joined
Feb 11, 2017
Messages
2,759
Location
White Sand Bch
I run P26a in my OR Boss. Solid build quality grade A cells.. P28a appears same cell (dimensions?) with slightly more capacity rating?
 
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