Test/review of Sofirn 14500 900mAh (Black)

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HKJ
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Test/review of Sofirn 14500 900mAh (Black)

Sofirn 14500 900mAh (Black)
DSC_5148
Official specifications:


  • Capacity: 900mAh (milliamp-hour)
  • Recharge up to 1100 times; Pre-Charged in factory
  • No memory effect – batteries can be recharged when fully, or partially discharged

Sofirn%2014500%20900mAh%20(Black)-info
A 14500 LiIon battery from Sofirn.
DSC_5147
DSC_5149 DSC_5150
DSC_5166
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Sofirn%2014500%20900mAh%20(Black)-Capacity
There is capacity difference between the two cells and they are not the rated 900mAh, the best one is more like 800mAh
Sofirn%2014500%20900mAh%20(Black)-Temp-2.0
Sofirn%2014500%20900mAh%20(Black)-Temp-3.0
Sofirn%2014500%20900mAh%20(Black)-CapacityTimeHours
Sofirn%2014500%20900mAh%20(Black)-CapacityTime
Sofirn%2014500%20900mAh%20(Black)-Energy
Sofirn%2014500%20900mAh%20(Black)-PowerLoadTime
Sofirn%2014500%20900mAh%20(Black)-TripCurrent
Sofirn%2014500%20900mAh%20(Black)-Charge
Conclusion
There is a significant capacity difference between the two cells, i.e. they cannot be used in series. Actual capacity is fairly normal for average quality batteries in this size.
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
Comparison to other LiIon batteries

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

MRsDNF
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Thumbs Up Thanks for the review HKJ.

 

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MascaratumB
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If I remember correctly, when I first got mine, there was also a difference in the top charging value, so this probably means there are fluctuations (inconsistency) among the same type of cells!

Thanks for the review HKJ Thumbs Up

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d_t_a
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Thanks for the test, HKJ!

Perhaps Sofirn can also send you their 18650s for testing:

(the one labeled 2800mAh is a protected 18650)

Funtastic
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Sofirn have seemed to of changed their 14500’s to better cells.

Just finished testing at 3A with the West Mountain CBA IV Pro and I got much less voltage sag than the cell I purchased last year.

0.18A – 894mAh (0.2C)
0.5A – 869mAh
1A – 841mAh
1.5A – 810mAh
2A – 773mAh
2.5A – 671mAh
3A – 573mAh

Superstocker
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Thanks HKJ!