Test/review of Hohm 18650 Life4 3015mAh (Black-white)

HKJ

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Mar 26, 2008
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9,715
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Copenhagen, Denmark
[size=+3]Hohm 18650 Life4 3015mAh (Black-white)[/size]

DSC_2464.jpg


Official specifications:
  • Capacity: 3015mAh
  • Max Charge Rate: 4.43A
  • Max Charge Voltage: 4.2V
  • Continuous Discharge Rate: 22.1A
  • Max 80oC | 3.2V cut-off: 31.5A
  • Pulse | Peak6: 37.1A
  • Cycle Life Retention: 500 @ 70%, 1000 @ 60%
  • Chemistry Type: QSP Li-NMC

Hohm%2018650%20Life4%203015mAh%20(Black-white)-info.png


This is a fairly high capacity and high current cell.







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Hohm%2018650%20Life4%203015mAh%20(Black-white)-Capacity.png


Oops, the two batteries do not match in capacity, this means never use them in series. One of the cells is significantly below rated capacity.

Hohm%2018650%20Life4%203015mAh%20(Black-white)-Temp-15.0.png


Hohm%2018650%20Life4%203015mAh%20(Black-white)-Temp-20.0.png


Hohm%2018650%20Life4%203015mAh%20(Black-white)-Temp-30.0.png


Hohm%2018650%20Life4%203015mAh%20(Black-white)-CapacityTimeHours.png


Hohm%2018650%20Life4%203015mAh%20(Black-white)-CapacityTime.png


Hohm%2018650%20Life4%203015mAh%20(Black-white)-Energy.png


Hohm%2018650%20Life4%203015mAh%20(Black-white)-PowerLoadTime.png


Hohm%2018650%20Life4%203015mAh%20(Black-white)-TripCurrent.png


Hohm%2018650%20Life4%203015mAh%20(Black-white)-Charge.png


Discharge-Hohm%2018650%20Life4%203015mAh%20%28Black-white%29-pulse-1.0%2010%2010-IR.png



[size=+3]Conclusion[/size]

I am not happy about the difference in capacity between the batteries and the very precise capacity rating do not really match the batteries.



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

The batteries was supplied by Hohmtech 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
 

john61ct

Newly Enlightened
Joined
Jan 17, 2017
Messages
183
That "Life4" branding sure is deceptive, will cause people to assume LFP chemistry
 

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