Test/Review of Efest 18650 2600mAh ft (Black)

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HKJ
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Test/Review of Efest 18650 2600mAh ft (Black)
Efest 18650 2600mAh ft (Black)

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Official specifications:
  • Brand: Efest
  • Min Capacity:2500 mAh
  • Typical Capacity:2600 mAh
  • Nominal Voltage: 3.7V

Efest%2018650%202600mAh%20ft%20(Black)-info

This is a unprotected 2600mAh cell with a Efest wrapper on.

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DSC_1364 DSC_1365

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Efest%2018650%202600mAh%20ft%20(Black)-Capacity

The cells does track very nicely.

Efest%2018650%202600mAh%20ft%20(Black)-CapacityTimeHours

Efest%2018650%202600mAh%20ft%20(Black)-CapacityTime

Efest%2018650%202600mAh%20ft%20(Black)-Energy

Efest%2018650%202600mAh%20ft%20(Black)-PowerLoadTime

Efest%2018650%202600mAh%20ft%20(Black)-TripCurrent

15A is way to much for these cells, but they do handle it without any problems.

Efest%2018650%202600mAh%20ft%20(Black)-Charge



Conclusion

These batteries works as expected.
At the current time I can only rate them acceptable, because Efest is a new company, and the batteries is not from one of the big brands.



Notes and links

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

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

kreisler
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i dont believe in efest, but thanks!!

*FMI* i got 4 i/o sh
ri chevy
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Is this made from a Sanyo cell? It kind of looks like it from the picture.

HKJ
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ri chevy wrote:
Is this made from a Sanyo cell? It kind of looks like it from the picture.

Efest has not specified anything, if they had specified Sanyo I would have given them a higher rating.
But it probably is Sanyo (At least this batch):

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

ri chevy
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Thank you HKJ! Smile