LG 18650 HG2L 3000mAh (Cyan)
Official specifications:
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Capacity (Mfg Nominal): 3000 mAh
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Chemistry: Li-Ion
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Form Factor: 18650
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Rated Voltage: 3.6 V
This 18650 cell is probably a minor variation on the HGL type.
The two cells matches nicely and can deliver a lot of amperes.
Conclusion
This is a good high current.
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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries