Test/review of Molicel INR21700-P42A 4200mAh (Gray)

HKJ

Flashaholic
Joined
Mar 26, 2008
Messages
9,715
Location
Copenhagen, Denmark
[SIZE=+3]Molicel INR21700-P42A 4200mAh (Gray)[/SIZE]

DSC_5264.jpg


Official specifications:
  • Rated typical capacity: 4200mAh
  • Rated minimum capacity: 4000mAh
  • Nominal voltage: 3.6V
  • Standard charge current: 4.2A
  • Maximum charge current: 8.4A
  • End of charge voltage: 4.20V +/-0.05V
  • Continuous discharge current: 45A (Cycle life is reduced at high rates)
  • End of discharge voltage: 2.5V
  • Typical impedance: <15mOhm AC 1kHz
  • Cycle life: 500 cycles at 4.2A charge and 10A discharge for 80%
  • Operating temperature: Charging: -20°C ~ 60°C, Discharging: -40°C ~ 60°C
  • Storage temperature: <35°C, recommended <35°C for long term.

Molicel%20INR21700-P42A%204200mAh%20(Gray)-info.png


This is a 21700 high current cell with good capacity.

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DSC_5266.jpg


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Molicel%20INR21700-P42A%204200mAh%20(Gray)-Capacity.png


The two cells match just about perfect and capacity do not really change with load.

Molicel%20INR21700-P42A%204200mAh%20(Gray)-Temp-20.0.png


Molicel%20INR21700-P42A%204200mAh%20(Gray)-Temp-30.0.png


I forgot the temperature sensor with the first battery.

Molicel%20INR21700-P42A%204200mAh%20(Gray)-CapacityTimeHours.png


Molicel%20INR21700-P42A%204200mAh%20(Gray)-CapacityTime.png


Molicel%20INR21700-P42A%204200mAh%20(Gray)-Energy.png


Molicel%20INR21700-P42A%204200mAh%20(Gray)-PowerLoadTime.png


Molicel%20INR21700-P42A%204200mAh%20(Gray)-TripCurrent.png


Molicel%20INR21700-P42A%204200mAh%20(Gray)-Charge.png




[SIZE=+3]Conclusion[/SIZE]

This is good high current cells.



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

The batteries was supplied by N-Power Energy 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
Graphical comparison to 18650 and other batteries
Graphical comparison to 26650 and other batteries
Table with all tested LiIon batteries
 
Last edited:

id30209

Flashlight Enthusiast
CPF Supporter
Joined
Mar 7, 2008
Messages
2,746
Location
Croatia, EU
So 20700/21700 are picking up pace with much larger 26650... I was sceptic at first when i saw this format but now.... Thx for the review! Do you have any info where can it be purchased? EU area
 

SubLGT

Flashlight Enthusiast
Joined
Nov 18, 2013
Messages
1,183
Location
Idaho, USA
A worthy competitor to the Samsung 40T. It has greater initial voltage drop than the 40T, but has higher capacity and less voltage drop at the end of the discharge curve
 
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