Test/review of Hohm 18650 Work2 2547mAh (Black-white)

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HKJ
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Test/review of Hohm 18650 Work2 2547mAh (Black-white)

Hohm 18650 Work2 2547mAh (Black-white)
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Official specifications:


  • Capacity: 2547mAh
  • Max Charge Rate: 3.82A
  • Max Charge Voltage: 4.2V
  • Continuous Discharge Rate: 25.3A
  • Max 80oC | 3.2V cut-off: 35.8A
  • Pulse | Peak6: 42.4A
  • Cycle Life Retention: 500 Cycles (69%), 1000 (58%)
  • Chemistry Type: QSP Li-NMC

Hohm%2018650%20Work2%202547mAh%20(Black-white)-info
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Hohm%2018650%20Work2%202547mAh%20(Black-white)-Capacity
The specifications for the battery sound fine and the two cells match very nicely in the discharge curve, but a internal fuse blows at 15A discharge current
Hohm%2018650%20Work2%202547mAh%20%28Black-white%29-Temp-10.0
Hohm%2018650%20Work2%202547mAh%20%28Black-white%29-Temp-15.0
The battery is not hot on the outside when the fuse blows.
Hohm%2018650%20Work2%202547mAh%20(Black-white)-CapacityTimeHours
Hohm%2018650%20Work2%202547mAh%20(Black-white)-CapacityTime
Hohm%2018650%20Work2%202547mAh%20(Black-white)-Energy
Conclusion
The batteries looks fine at low current (That is 10A), but something is wrong with the current rating or the batteries. The overload fuse burns out way below rating.
Notes and links
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

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

Dlux
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Not so insane drain after all.
Thanks for the review! Beer

Superstocker
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Thanks HKJ! Much appreciated.

CRX
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Invaluable testing as always Thumbs Up