Sony US26650FT 3000mAh (Green)
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Official specifications:
- Nominal capacity: 3000mAh
- Nominal voltage: 3.3V
- Chemistry: LiFePO4
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This is a LiFePO4 cell, i.e. the voltage is lower and the discharge looks very different from normal LiIon. The two cells are very well matched.
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Most of the discharge the output voltage is very flat, voltage mostly depends on discharge current, not on charge state.
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Conclusion
This chemistry has lower capacity, lower voltage, but much better lifetime. The batteries looks to be high quality.
Notes and links
Vapcell told me that I was missing some cells in my comparator and they would be happy to supply them.
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
Compare to 26650 and other batteries