Soshine 18650 LiFePO4 1800mAh (Black)

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Official specifications:
Soshine%2018650%20LiFePO4%201800mAh%20(Black)-info

Soshine has a series of LiFePO4 cells, this is their 18650 sized one.

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Soshine%2018650%20LiFePO4%201800mAh%20(Black)-Capacity

This is a typical LiFePO4 discharge curve and it looks good. As can be seen the voltage is nearly flat during discharge and then drops very fast when the battery is empty.

Soshine%2018650%20LiFePO4%201800mAh%20(Black)-CapacityTimeHours

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LiFePO4 has a significant voltage drop when charging stops.



Conclusion

The cells looks like good LiFePO4 cells, but I wonder about the fairly low current overload protection.
There is also the usual limited capacity with this chemistry, it has less than half the energy of a modern 4.2 volt LiIon cell.


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