Sanyo UR18650ZK 2500mAh (Cyan)
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Official specifications:
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Capacity: 2500mAh
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Charging current: 1.25A
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Charging voltage: 4.2V
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Max discharge current: 5A
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This cell is not a high current cell, in one development plan it said it was for backup and only to be charged to 4.1V
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It can easily match the 2500mAh specification at least up to 7A current draw.
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Conclusion
The cells looks to be very good quality, but at 4.2V the capacity is not very impressive by today’s standard and it cannot deliver very high current either.
I would love to see a real datasheet for this battery to see if it is a general purpose or a long life with lower charge voltage.
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