Test/review of Eizfan IMR21700 5000mAh (Black-purple) 2019

HKJ

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[size=+3]Eizfan IMR21700 5000mAh (Black-purple) 2019[/size]

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Official specifications:
  • Model: IMR 21700
  • Rated Capacity: 5000mAh
  • Nominal Voltage: 3.7V
  • Voltage at end of discharge: 2.9V
  • Standard charge current: 740mA
  • Max. Charge Current: 3700mA
  • Max. continuous discharge current: 10A
  • Max. pulse discharge current: 15A
  • Charging temperature range: 0C to 45C
  • Discharge temperature range: -10C / -60C
  • Inner resistance: 16mOhm
  • Cell size : 21.8mm x 70.6mm
  • Weight: 85g/pc

Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-info.png


Very high capacity 21700 batteries, this also means that they are not high current.

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Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-Capacity.png


The cells matches perfectly and they can deliver the rated current, at any higher current they will get into heat problems.

Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-Temp-10.0.png


Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-Temp-15.0.png


Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-Temp-20.0.png


Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-CapacityTimeHours.png


Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-CapacityTime.png


Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-Energy.png


Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-PowerLoadTime.png


Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-TripCurrent.png


Eizfan%20IMR21700%205000mAh%20(Black-purple)%202019-Charge.png




[size=+3]Conclusion[/size]

A very good high capacity cell.



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

The batteries was supplied by Eizfan (Efan) 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
Table with all tested LiIon batteries
 

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