Test/review of E-Stream ES18650-26EP 2600mAh (Pink) 2021

HKJ

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[size=+3]E-Stream ES18650-26EP 2600mAh (Pink) 2021[/size]

DSC_4628.jpg


Official specifications:
  • Nominal voltage: 3.65V
  • Energy: 9.49 Wh
  • Discharge cut-off voltage: 2.75V
  • Maximum charge voltage: 4.2V
  • Internal Impedance ACIR: 25mOhm
  • Standard charge current: 1.3 (0.5C)
  • Standard charge cut-off current: 130mA (0.05C)
  • Maximum continuous charge current: 2.6A (1C)
  • Maximum pulse charge (< 2s) current: 5.2A (2C)
  • Standard discharge current: 2.6A (1C)
  • Maximum continuous discharge current: 15A (5.7C)
  • Maximum pulse (< 1s) discharge current: 20A (7.7C)
  • Cut-off temperature limit discharge: 60°C
  • Cycle life (80% of initial capacity): 1000 cycles (standard charge/discharge)
ream%20ES18650-26EP%202600mAh%20(Pink)%202021-info.png


This is a 18650 cell with moderate capacity and moderate current capabilities.

DSC_4627.jpg


DSC_4629.jpg
DSC_4630.jpg


DSC_4631.jpg

DSC_4632.jpg


%20ES18650-26EP%202600mAh%20(Pink)%202021-Capacity.png


The two cells tracks nicely and can easily deliver the rated 15A. My 30A test looks a bit strange and one of the cells got damaged during it.

20ES18650-26EP%202600mAh%20(Pink)%202021-Temp-15.0.png


20ES18650-26EP%202600mAh%20(Pink)%202021-Temp-20.0.png


20ES18650-26EP%202600mAh%20(Pink)%202021-Temp-30.0.png


0-26EP%202600mAh%20(Pink)%202021-CapacityTimeHours.png


S18650-26EP%202600mAh%20(Pink)%202021-CapacityTime.png


am%20ES18650-26EP%202600mAh%20(Pink)%202021-Energy.png


18650-26EP%202600mAh%20(Pink)%202021-PowerLoadTime.png


ES18650-26EP%202600mAh%20(Pink)%202021-TripCurrent.png


am%20ES18650-26EP%202600mAh%20(Pink)%202021-Charge.png


2600mAh%20%28Pink%29%202021-pulse-1.0%2010%2010-IR.png




[size=+3]Conclusion[/size]

The cells looks fine, they are not high capacity or high current, but they have a rather high cycle count (can handle many charges/discharges).



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

The batteries was supplied by E-Stream 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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