Ampsplus INR18650 2500mAh (Black)
Official specifications:
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Size: 18.35mm x 64.95mm
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Nominal Voltage: 3.65V
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Nominal Capacity: 2500mAh
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Minimum Capacity: 2450mAh
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Charging Metod: CC/CV 4.20CV ±0.05V
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Discharge Voltage: 2.50V (Average Cut Off)
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Charging Current CC: 1250mA , 135min
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Rapid Charging Current: 4000mA , 55min
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Continuous Discharge Current: 20A
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Internal Resistance: 0.04 Ohm
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Battery rate: 8C
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Weight: 48 gr.max
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Colour: Black , Silver
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Version: Flat Top
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Protection: No
This is a high current 18650 cell with moderate capacity.
The discharge curves has nice tracking and nearly constant capacity up to 20A.
The battery warms up during a 20A discharge, but not too much.
30A discharge is not really for continuous discharge.
Conclusion
This is a very good high current cell.
Notes and links
The batteries was supplied by ecoluxshopdirect.co.uk 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