XHData 18650 2500mAh (Cyan)
Official specifications:
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Nominal Capacity: 2500mAh
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Min Capacity: 2100mAh
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Norminal Voltage: 3.7V
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Standard Charging Current: 0.5C
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Charge Ending Voltage: 4.2V
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Standard Discharging Current: 1C
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Max.Continuous Discharging: 10C
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Max.Short Time Discharging: 30A
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Discharge Ending Voltage: 2.75V
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Standard Charging Time: 5-6h
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Rapid Charging Time: 2.0-2.5h
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Impedance: <20mOhm
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Battery Weight: about 45g
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Operation Temperature: 20-60°C
Some batteries from Ebay rated for high current. The capacity specification has a rather wide range.
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/XHData%2018650%202500mAh%20(Cyan)-Capacity.png)
There is a small difference between the cells in capacity and they can only handle about 10A
/XHData%2018650%202500mAh%20(Cyan)-Temp-10.0.png)
/XHData%2018650%202500mAh%20(Cyan)-Temp-15.0.png)
/XHData%2018650%202500mAh%20(Cyan)-Temp-20.0.png)
/XHData%2018650%202500mAh%20(Cyan)-CapacityTimeHours.png)
/XHData%2018650%202500mAh%20(Cyan)-CapacityTime.png)
/XHData%2018650%202500mAh%20(Cyan)-Energy.png)
/XHData%2018650%202500mAh%20(Cyan)-PowerLoadTime.png)
/XHData%2018650%202500mAh%20(Cyan)-TripCurrent.png)
/XHData%2018650%202500mAh%20(Cyan)-Charge.png)
Conclusion
This battery is not very impressive in capacity and current handling, it works fine for a few amps, but the chemistry is not for high currents.
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