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

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

E-Stream ES18650-26EP 2600mAh (Pink) 2021
DSC_4628
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)

E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-info
This is a 18650 cell with moderate capacity and moderate current capabilities.
DSC_4627
DSC_4629 DSC_4630
DSC_4631
DSC_4632
E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-Capacity
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.
E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-Temp-15.0
E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-Temp-20.0
E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-Temp-30.0
E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-CapacityTimeHours
E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-CapacityTime
E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-Energy
E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-PowerLoadTime
E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-TripCurrent
E-Stream%20ES18650-26EP%202600mAh%20(Pink)%202021-Charge
Discharge-E-Stream%20ES18650-26EP%202600mAh%20%28Pink%29%202021-pulse-1.0%2010%2010-IR
Conclusion
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).
Notes and links
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

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