Test/Review of Efest 18650 2200mAh (Black) 2014

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HKJ
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Test/Review of Efest 18650 2200mAh (Black) 2014

Efest 18650 2200mAh (Black) 2014

DSC_6783

Official specifications:

  • Weight: 50g
  • Length: 65.40 mm
  • Diamter: 18.44 mm
  • Top: Button top
  • Bottom: non-procted
  • Typical Capacity: 2200mAh
  • Min capacity: 2200mAh
  • Max discharge current: 22000mA
  • Max charge current: 22000mA
  • Max continuous discharge current: 22000mA
  • Cycle life: 300 times
  • Discharge cut-off voltage: 3.0V
  • Voltage: 3.7V
  • Full Charge voltage: 4.2V
  • Discharge temperature range:-10°C—60°C
  • Charge temperature range: 0°C—40°C
  • Storage: 1 year:-20°C—25°C, 3 months:-20°C—45°C, 1 month:-20°C—60°C


Efest%2018650%202200mAh%20(Black)%202014-info

This is a normal (i.e. not high current) 18650 cell. I believe the 22000mA in the specifications is a typo.

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DSC_6784 DSC_6785

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Efest%2018650%202200mAh%20(Black)%202014-Capacity

There is good tracking between the two cells at lower current and the capacity is fairly constant up to 7A.

Efest%2018650%202200mAh%20(Black)%202014-CapacityTimeHours

Efest%2018650%202200mAh%20(Black)%202014-CapacityTime

Efest%2018650%202200mAh%20(Black)%202014-Energy

Efest%2018650%202200mAh%20(Black)%202014-PowerLoadTime

Efest%2018650%202200mAh%20(Black)%202014-TripCurrent

Efest%2018650%202200mAh%20(Black)%202014-Charge



Conclusion

Up to a few amperes the battery looks good, but both capacity and current capability is rather low by today’s standards.



Notes and links

The batteries was supplied by Efest 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/

Edited by: HKJ on 12/07/2014 - 16:57
202bigmike
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It works , but it’s so-so ? Not quite up to today’s speed.

HKJ
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202bigmike wrote:
It works , but it's so-so ? Not quite up to today's speed.

The battery is fine, if:

  • You can get it to the right price
  • Your application only needs 2 to 3A.
  • You do not need the longest runtime possible.

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

202bigmike
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HKJ wrote:

202bigmike wrote:
It works , but it’s so-so ? Not quite up to today’s speed.

The battery is fine, if:

  • You can get it to the right price
  • Your application only needs 2 to 3A.
  • You do not need the longest runtime possible.

It’s worth what it’s worth , if it fits someone’s need$ .

Those words are mine. Thanks for the review HKJ.

WarHawk-AVG
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Depending on price, these could be some decent daily driver (5A and below) batteries

At 7 and 10 amp the batteries sag WAY too much

Awesome review…thanks!!!