Test/Review of EnerPower+ 18650 2900mAh (Blue) 2015

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Test/Review of EnerPower+ 18650 2900mAh (Blue) 2015
EnerPower+ 18650 2900mAh (Blue) 2015

Button top version

DSC_9066

Official specifications:
  • Nominal Capacity: 2,850mAh
  • Typical Capacity: 2,850mAh
  • Minimum Capacity: 2,750mAh
  • Charging Voltage: 4.20 ± 0.05 V
  • Nominal Voltage: 3.65V (0.2C discharge)
  • Charging Method: CC-CV (constant voltage with limited current)
  • Charging Current Standard charge: 1,375mA
  • Charging Time Standard charge: 3hours
  • Max. Charge Current: 2750mA (not for cyclelife)
  • Max. Discharge Current: 2,750mAh (continuous discharge), 8250mAh (not for continuous discharge)
  • Discharge Cut-off Voltage 2.50V
  • Cycle life: 500 cycles to 70%
  • Cell Weight max.: 48g
  • Cell Dimension: Diameter max.: 18.40mm, Height max.: 65.00mm
  • Operating Temperature (Cell Surface Temperature): Charge: 0 to 45°C, Discharge: -20 to 60°C

EnerPower+%2018650%202900mAh%20(Blue)%20BT%202015-info
A high capacity cell with good cycle life but not designed for high currents.

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DSC_9067 DSC_9068

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EnerPower+%2018650%202900mAh%20(Blue)%20BT%202015-Capacity

Very nice discharge curves with good tracking and only a moderate capacity drop when loaded.

EnerPower+%2018650%202900mAh%20(Blue)%20BT%202015-CapacityTimeHours

EnerPower+%2018650%202900mAh%20(Blue)%20BT%202015-CapacityTime

EnerPower+%2018650%202900mAh%20(Blue)%20BT%202015-Energy

EnerPower+%2018650%202900mAh%20(Blue)%20BT%202015-PowerLoadTime

EnerPower+%2018650%202900mAh%20(Blue)%20BT%202015-TripCurrent

EnerPower+%2018650%202900mAh%20(Blue)%20BT%202015-Charge



Flat top version

DSC_9073

Official specifications: See above

EnerPower+%2018650%202900mAh%20(Blue)%20FT%202015-info

The flat top version of the cell, notice that it is a added flat top that is flush with the battery top.

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EnerPower+%2018650%202900mAh%20(Blue)%20FT%202015-Capacity

And the curve is just as good as the ones for the button top cells.

EnerPower+%2018650%202900mAh%20(Blue)%20FT%202015-CapacityTimeHours

EnerPower+%2018650%202900mAh%20(Blue)%20FT%202015-CapacityTime

EnerPower+%2018650%202900mAh%20(Blue)%20FT%202015-Energy

EnerPower+%2018650%202900mAh%20(Blue)%20FT%202015-PowerLoadTime

EnerPower+%2018650%202900mAh%20(Blue)%20FT%202015-TripCurrent

EnerPower+%2018650%202900mAh%20(Blue)%20FT%202015-Charge



Conclusion

Very good cells as long as you do not need more than a few ampere.



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
Compare to 18650 and other batteries

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