Samsung INR18650-15M 1500mAh (Cyan)
Official specifications:
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Nominal capacity; 1500mAh
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Minimum capacity: 1450mAh
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Charging voltage: 4.2V +/-0.05V
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Nominal voltage: 3.6V
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Charging method: CC-CV with 100mA cut-off
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Charging current: Standard: 0.75A, Rapid: 4A
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Maximum discharge current: 23A
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Discharge cut-off: 2.5V
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Cycle life: 250 cycles to 60% at 23A discharge and 0.75A charge.
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Operating temperature: Charge: 0°C ~ 50°C, discharge: –20°C ~ 75°C
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Storage temperature: 1 month: –30°C ~ 60°C, 3 months: –30°C ~ 45°C, 1 year: –20°C ~ 25°C
This is a fairly old high current battery (Datasheet from 2010)
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/Samsung%20INR18650-15M%201500mAh%20(Cyan)-Capacity.png)
The discharge curves match very well and the capacity is just about constant at any discharge current below rating.
/Samsung%20INR18650-15M%201500mAh%20(Cyan)-Temp-15.0.png)
/Samsung%20INR18650-15M%201500mAh%20(Cyan)-Temp-20.0.png)
/Samsung%20INR18650-15M%201500mAh%20(Cyan)-Temp-30.0.png)
/Samsung%20INR18650-15M%201500mAh%20(Cyan)-CapacityTimeHours.png)
/Samsung%20INR18650-15M%201500mAh%20(Cyan)-CapacityTime.png)
/Samsung%20INR18650-15M%201500mAh%20(Cyan)-Energy.png)
/Samsung%20INR18650-15M%201500mAh%20(Cyan)-PowerLoadTime.png)
/Samsung%20INR18650-15M%201500mAh%20(Cyan)-TripCurrent.png)
/Samsung%20INR18650-15M%201500mAh%20(Cyan)-Charge.png)
Conclusion
For its time an impressive tool cell, but the capacity is low by today’s standard.
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