AW 17670 1600mAh (Black) 2016
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Official specifications:
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Nominal capacity: 1600mAh
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Nominal Voltage: 3.7V
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Diameter: 17.02mm
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Length: 67.30mm +/- 0.05mm
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Max. discharge rate: 2C (3.2A)
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Size for reference: 168S / 600S
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PCB protection against overcharge, over discharge and short circuit
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Safety vent with thermal cut off protection
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This cell from AW is fairly thin, this means it can usual replace 2xCR123 in size (Voltage will be lower).
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The discharge curves looks fairly good, at least up to 3A, but the cell cannot really deliver 5A or 7A. This is perfectly acceptable for a 3.2A rated cell.
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The cell warms up at 3A, but nothing problematic.
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The temperature is also acceptable at 5A.
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Conclusion
The battery looks like it is a old design with low capacity and low current handling, but the cell is still good as a replacement for 2xCR123 cells in equipment (flashlights) that can run on the lower voltage.
Notes and links
The batteries was supplied by aw-akku.de 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
Compare to 18650 and other batteries