Test/Review of EnerPower+ 18650 2500mAh (Blue) 2015

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HKJ
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Test/Review of EnerPower+ 18650 2500mAh (Blue) 2015
EnerPower+ 18650 2500mAh (Blue) 2015

Button top version

DSC_9037

Official specifications:
  • Flat top
  • Protected
  • Nominal discharge capacity: 2,500mAh
  • Nominal voltage: 3.6V
  • Standard charge: CCCV, 1.25A, 4.20 ± 0.05 V, 100mA cut-off
  • Rapid charge: CCCV, 4A, 4.20 ± 0.05 V, 100mA cut-off
  • Charging time: Standard charge : 180min / 100mA cut-off
  • Rapid charge: 60min (at 25°C) / 100mA cut-off
  • Max. continuous discharge: 20A(at 25°C), 60% at 250 cycle
  • Discharge cut-off voltage: 2.5V
  • Cell weight: 45.0g max
  • Operating temperature (surface temperature): Charge : 0 to 50°C (recommended recharge release re-discharge release Storage temperature (Recovery 90% after storage): 1.5 year -30~25°C, 3 months -30~45°C, 1 month -30~60°C

EnerPower+%2018650%202500mAh%20(Blue)%20BT%202015-info

These batteries is something very rate, they are protected high current cells. This means that they cannot be over discharged, but it also means a bit lower performance due to the resistance in the protection.

DSC_9036

DSC_9038 DSC_9039

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DSC_9041
DSC_9042

EnerPower+%2018650%202500mAh%20(Blue)%20BT%202015-Capacity

The cells looks very good, they track perfectly, but due to the protection they cannot deliver the rated 20A.

EnerPower+%2018650%202500mAh%20(Blue)%20BT%202015-CapacityTimeHours

EnerPower+%2018650%202500mAh%20(Blue)%20BT%202015-CapacityTime

EnerPower+%2018650%202500mAh%20(Blue)%20BT%202015-Energy

EnerPower+%2018650%202500mAh%20(Blue)%20BT%202015-PowerLoadTime

EnerPower+%2018650%202500mAh%20(Blue)%20BT%202015-TripCurrent

EnerPower+%2018650%202500mAh%20(Blue)%20BT%202015-Charge



Flat top version

DSC_9058

Official specifications:
  • Button top
  • Protected
  • Nominal discharge capacity: 2,500mAh
  • Nominal voltage: 3.6V
  • Standard charge: CCCV, 1.25A, 4.20 ± 0.05 V, 100mA cut-off
  • Rapid charge: CCCV, 4A, 4.20 ± 0.05 V, 100mA cut-off
  • Charging time: Standard charge : 180min / 100mA cut-off
  • Rapid charge: 60min (at 25°C) / 100mA cut-off
  • Max. continuous discharge: 20A(at 25°C), 60% at 250 cycle
  • Discharge cut-off voltage: 2.5V
  • Cell weight: 45.0g max
  • Operating temperature (surface temperature): Charge : 0 to 50°C (recommended recharge release Storage temperature (Recovery 90% after storage): 1.5 year -30~25°C, 3 months -30~45°C, 1 month -30~60°C

EnerPower+%2018650%202500mAh%20(Blue)%20FT%202015-info

Same cell as above, but in a flat top version. This is not the usual flat top design, with the original positive top of the battery, but instead with a very low button top.

DSC_9057

DSC_9059 DSC_9060

DSC_9061
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DSC_9063

EnerPower+%2018650%202500mAh%20(Blue)%20FT%202015-Capacity

The performance is the same as the button top.

EnerPower+%2018650%202500mAh%20(Blue)%20FT%202015-CapacityTimeHours

EnerPower+%2018650%202500mAh%20(Blue)%20FT%202015-CapacityTime

EnerPower+%2018650%202500mAh%20(Blue)%20FT%202015-Energy

EnerPower+%2018650%202500mAh%20(Blue)%20FT%202015-PowerLoadTime

EnerPower+%2018650%202500mAh%20(Blue)%20FT%202015-TripCurrent

Remember that this test is for short time over load, the protection will trip at a lower current when doing longer runs.

EnerPower+%2018650%202500mAh%20(Blue)%20FT%202015-Charge



Conclusion

For people that do not need the full performance, this is a much safer battery to use than the unprotected version.
It is a good battery, but I would have liked the over current protection at a higher current.



Notes and links

The batteries was supplied by ENERDan 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/

Woody
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Joined: 02/20/2012 - 17:08
Posts: 1644
Location: London

Great review, as usual – thanks.

It is good that there are so many quality, safe choices for li-ion batteries these days.