Test/Review of Efan IMR18650 3200mAh (Purple)

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HKJ
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Test/Review of Efan IMR18650 3200mAh (Purple)
Efan IMR18650 3200mAh (Purple)

DSC_6552

Official specifications:
  • Capacity: 3200mAh
  • Nominal Voltage: 3.70V
  • Standard Charge: Constant current 1250mA, Constant voltage 4.20V, End current(Cut off) 50mA
  • Fast Charge : Constant current 4000mA, Constant voltage 4.20V, End current(Cut off) 100mA
  • Max. Charge Voltage: 4.20V
  • Max. Charge Current: 4000mA
  • Standard Discharge: Constant current 500mA, End voltage(Cut off) 2.5V
  • Fast Discharge: Constant current 10000mA/20000mA, End voltage(Cut off) 2.5V
  • Max. Discharge Current: For continuous discharge 20A
  • Weight Approx.: Max. 48.0G
  • Operating Temperature: Charge 0 ~ 50°C, Discharge -20~ 75°C
  • Storage Temperature: 1 month -20 ~ 60°C, 3 months -20 ~45°C, 1 year -20 ~ 20°C
  • Dimension: (D)18.3 + 0.2/-0.3 mm (H) 65.0 ± 0.2 mm

Efan%20IMR18650%203200mAh%20(Purple)-info

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

DSC_6550 DSC_6551

DSC_6553 DSC_6557

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DSC_6555
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Efan%20IMR18650%203200mAh%20(Purple)-Capacity

It does fine up to 10A, but above that there are significant looses in the cell.

Efan%20IMR18650%203200mAh%20(Purple)-CapacityTimeHours

Efan%20IMR18650%203200mAh%20(Purple)-CapacityTime

Efan%20IMR18650%203200mAh%20(Purple)-Energy

Efan%20IMR18650%203200mAh%20(Purple)-PowerLoadTime

Efan%20IMR18650%203200mAh%20(Purple)-TripCurrent

Efan%20IMR18650%203200mAh%20(Purple)-Charge



Conclusion

This cell has good capacity for a high current cell, it does not really handle 20A, but looks good at 10A.



Notes and links

The batteries was supplied by 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
Compare to 18650 and other batteries

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Chicken Drumstick
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Are these any relation to the Efest 3100 20A cells? They look almost identical. Thanks for the review.

HKJ
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Chicken Drumstick wrote:
Are these any relation to the Efest 3100 20A cells? They look almost identical. Thanks for the review.

I do not know it, but I agree, they are a good match in the comparator.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/