Test/review of Eizfan IMR18650 2500mAh (Black-purple) 2018

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HKJ
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Test/review of Eizfan IMR18650 2500mAh (Black-purple) 2018

Eizfan IMR18650 2500mAh (Black-purple) 2018
DSC_4695
Official specifications:


  • Capacity: 2500mAh
  • Nominal voltage: 3.70V
  • Standard charge: 1250mA, 4.20V, 50mA cut-off
  • Fast charge: 4000mA, 4.20V, 100mA cut-off
  • Maximum charge voltage: 4.20V
  • Maximum charge current: 4000mA
  • Standard discharge: 500mA
  • End voltage (cut-off): 2.5V
  • Maximum continuous discharge current: 40A
  • Weight: Max 49.0g
  • Operating temperature: Charge: 0°C ~ 50°C, Discharge: -20°C ~ 75°C
  • Storage temperature: 1 month: -°C ~ 60°C, 3 months: -20°C ~ 45°C, 1 year: -20°C ~ 20°C

Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-info
This is a high current 18650 battery with moderate capacity.
DSC_4692
Nice graphic on the box, it shows the key specifications .
DSC_4693 DSC_4694
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Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-Capacity
The discharge curves matches nicely and the battery handles up to 20A without much capacity loss
Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-Temp-15.0
Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-Temp-20.0
Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-Temp-30.0
Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-CapacityTimeHours
Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-CapacityTime
Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-Energy
Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-PowerLoadTime
Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-TripCurrent
Eizfan%20IMR18650%202500mAh%20(Black-purple)%202018-Charge
Conclusion
This looks like a good high current cells.
Notes and links
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
Compare to 18650 and other batteries

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

HydrAxx
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Last seen: 4 hours 41 min ago
Joined: 08/22/2018 - 09:27
Posts: 109
Location: France, Nantes

Already tested by Mooch there is little more than a month, he himself hoped at least a rewrap of the Samsung INR18650-25S, but it is nothing, a simple and poor Samsung 25R5, it is lamentable and shameful from Eizfan.

The link to the test of this same cell by Mooch:

https://www.e-cigarette-forum.com/threads/bench-test-results-eizfan-40a-...

Can a single flapping of a butterfly's wings trigger a tornado at the other end of the world?